Best Oil Catch Can for 5.7 Hemi: Top 8 Picks Reviewed

Oil vapors sneak into your 5.7 Hemi’s intake, leaving behind gunky residue. This buildup dulls engine response and sparks annoying misfires. Watching your performance slip while cleaning valves feels like a losing battle.

The RANSOTO catch can uses a robust T6061 billet aluminum body to trap oil vapors before they clog valves. The POSENG separator opts for compact, precision-machined design with a handy Z-bracket that makes maintenance easier.

BARTOO’s compact two-port catch can fits tight spaces without losing efficiency, perfect if your engine bay is snug and demands a clean setup.

Effective Oil Catch Can Solutions for Your 5.7 Hemi

Protect your 5.7 Hemi’s performance by choosing an oil catch can that efficiently traps harmful vapors and maintains engine cleanliness. Explore these top solutions engineered for power and reliability.

1. RANSOTO High-Performance Red Billet Aluminum Oil Catch Can Kit for HEMI Engines

Handling the crankcase ventilation system on certain powerful V8 engines can be tricky, especially when oil vapors threaten to degrade performance. This catch can gracefully intercepts oily mist before it can clog intake valves or degrade your engine’s efficiency. Built with a red T6061 billet aluminum body, it stands out visually and withstands the harsh conditions under the hood.

Designed specifically for select Dodge Charger, Challenger, Chrysler 300, and Jeep Grand Cherokee models with the 5.7L or 6.4L HEMI engine layout, it integrates seamlessly without compromising engine bay space. Installation takes careful route planning due to included hoses, brackets, and adapters that may need trimming or adjustments depending on your engine’s setup.

The internal baffled design is tasked with capturing and condensing oil mist, preventing it from recirculating into your intake. Maintenance is straightforward thanks to a removable cup that collects residue, allowing easy inspection and cleaning during routine service.

Equipped with a sturdy black Z-style mounting bracket and braided hoses, this kit offers durability paired with functional design. Keep in mind the importance of confirming your vehicle’s PCV hose connections and clearance before purchase to ensure a perfect fit.

RANSOTO focuses on quality components that aim to protect engine integrity while enhancing longevity.

Best for: Enthusiasts driving compatible Dodge and Jeep models who want to maintain cleaner intake systems and improve engine health.

Pros:

• Precision-machined billet aluminum construction
• Effective baffled separation of oil vapors
• Easy-to-remove cup for routine cleaning
• Includes braided hoses and mounting hardware
• Compatible with multiple 5.7L and 6.4L HEMI vehicles

Cons:

• Installation may require hose trimming and bracket adjustment

2. POSENG Billet Air Oil Separator with Z-Bracket for Chrysler Dodge 6.4L Engines

Designed with a precision-machined billet construction, this air oil separator effectively reduces harmful oil vapors entering the intake system. The innovative Z-bracket improves mounting stability while making access for cleaning or draining remarkably straightforward. Compact dimensions (4.75 x 2.50 inches) ensure a snug fit without sacrificing capacity.

Included are high-quality billet fittings and Continental INSTA» GRIP braided hoses that offer durable, leak-resistant connections built to withstand demanding engine conditions. Its design caters specifically to Chrysler and Dodge performance vehicles from 2011 to 2021 with 6.4L engines, supporting maintenance of cleaner intake airflow and enhanced engine longevity.

The black anodized finish not only resists corrosion but also blends seamlessly under the hood, complementing the engine bay aesthetics. Installation benefits from the clever Z-bracket design which simplifies attachment and removal for scheduled inspections or fluid evacuations. Reduced oil contamination helps maintain optimal combustion and avoids deposits that could sap power or fuel efficiency.

POSENG’s billet separator offers a smart upgrade that challenges the notion that all catch cans provide similar efficiency. Featuring premium materials and automotive-grade fittings, it ensures you avoid the common pitfalls of poorly designed separators that clog or leak prematurely.

Best for: Enthusiasts aiming to preserve performance and reduce intake system buildup in Chrysler and Dodge 6.4L models from recent years.

Pros:

• Precision billet machining for enhanced durability.
• Z-bracket provides easy access and strong mounting.
• Includes quality braided hoses and billet fittings.
• Compact size fits tight engine compartments.
• Corrosion-resistant anodized black finish.

Cons:

• May require basic mechanical knowledge for installation.

3. BARTOO Aluminum 2-Port Oil Catch Can Kit for Compact Engine Bays and Clean Performance

Fitting tight engine compartments without compromising functionality can be a challenge, but this compact catch can tackles that head-on. Crafted from 6061 billet aluminum with an anodized finish, it features a durable build designed to resist high temperatures and corrosion.

Offering universal compatibility, it’s engineered to work seamlessly with a wide range of vehicles from major brands like Honda, Toyota, and Dodge. Its two-port setup efficiently traps oil vapors before they reach your intake system, promoting long-term engine cleanliness.

Maintaining optimal engine condition becomes simpler with this catch can, as it prevents oily residues from degrading performance components. It helps preserve power output by ensuring your intake valves and pistons stay cleaner under tough driving conditions.

Easy to install and clean, the design suits cramped spaces while still providing a practical solution for managing crankcase ventilation. The precise inlet and outlet connections support a hassle-free setup, making it a smart choice for enhancing engine health.

BARTOO delivers a robust solution that balances compactness with functional quality, enhancing your vehicle’s operational endurance.

Best for: Enthusiasts looking to protect engines from carbon buildup in restricted engine bays without sacrificing performance.

Pros:

• Durable 100% billet 6061 aluminum construction with anodized surface
• Compact size ideal for small engine compartments
• Universal fit compatible with multiple vehicle makes and models
• Two-port design effectively traps oil vapors and contaminants
• Easy to clean and maintain for ongoing engine health

Cons:

• May require custom mounting solutions in unique engine layouts

4. J&L Oil Separator Co. 3.0 Premium Oil Catch Can for Dodge Charger & Challenger 5.7 Hemi

Tracking oil vapor intrusion can be frustrating without the right tool under your hood. This J&L oil separator tackles that challenge head-on, engineered specifically for Dodge Chargers and Challengers equipped with 5.7 Hemi engines. It uses a fine mesh stainless steel filter that expertly captures microscopic oil vapors, preventing buildup that can sap engine performance.

Designed with practicality in mind, the catch can’s knurled tank base allows for swift removal and draining without mess, paired with an O-ring seal to keep leaks out of the equation. Its compact 3-ounce tank fits neatly within the engine bay, gathering contaminants efficiently while requiring minimal maintenance.

Durability is evident in the machined stainless steel finish, which stands up to heat and exposure without corroding. The J&L system lets you extend intervals safely, with recommended checks around 1000 miles but potential stretches between 2500 and 3500 miles depending on your driving conditions.

Integrating seamlessly into your fuel system, this unit is a trusted solution for controlling oil blow-by and improving engine longevity. Expect clearer intake air and less carbon buildup when using this catch can in your Hemi-powered muscle car.

Best for: Enthusiasts seeking to protect their Hemi engines from greasy vapor contamination and maintain peak engine efficiency.

Pros:

• Custom fit for Dodge Charger and Challenger 5.7 Hemi models
• Fine mesh stainless steel filter for superior oil vapor separation
• Knurled base and O-ring seal for easy, leak-proof maintenance
• Compact size with 3-ounce capacity balances efficiency with space-saving design
• Durable machined stainless steel construction ensures long-lasting service

Cons:

• Relatively small 3 oz capacity may require more frequent monitoring under heavy use

5. EVIL ENERGY 300ml Aluminum Oil Catch Can Kit with Filter & AN10 Hose Set

Keeping unwanted oil vapors and moisture out of your engine’s intake system can significantly reduce carbon residue and prolong engine life. The EVIL ENERGY oil catch can is built with a baffled design featuring a removable steel ball filter, enhancing its ability to trap contaminants before they cause damage to valves and pistons.

Equipped with a 300ml reservoir, this aluminum air-oil separator fits a broad range of vehicles, making it a versatile choice if space permits. Its compatibility extends to PCV systems, allowing it to function either with a breather filter for vented setups or inline with PCV hoses for sealed configurations.

The inclusion of a comprehensive 5-foot AN10 CPE fuel hose and various swivel fittings eases installation, providing flexibility even in tight engine bays. While it’s designed to minimize buildup, be mindful that in colder climates, moisture can freeze inside the unit and may necessitate occasional maintenance.

EVIL ENERGY delivers a practical solution to engine cleanliness, featuring durable materials and adaptable fittings. The catch can ensures your engine runs smoother and cleaner by intercepting harmful oil vapors that often go unnoticed but have long-term effects.

Best for: Enthusiasts and daily drivers who want to protect their engine’s intake components from oil contamination and improve combustion efficiency.

Pros:

• Baffled chamber with steel ball filter for enhanced oil vapor trapping
• Universal 300ml capacity fits many vehicle models
• Includes a 5FT AN10 hose and versatile swivel fittings for easier installation
• Compatible with PCV and non-PCV systems for flexible venting options
• Lightweight aluminum construction resists corrosion

Cons:

• Might require weekly cleaning in freezing temperatures to prevent blockage

6. Moroso Precision Engine Air/Oil Separator Kit for Dodge Ram 5.7 & 6.1 Hemi Models

Engaging a precision-machined air/oil separator kit tailored for Dodge Ram trucks with 5.7 and 6.1 Hemi engines delivers a straightforward way to manage crankcase vapors and reduce contamination risks. The compact dimensions and thoughtfully engineered design help capture oil and vapor before they cycle back into your engine’s intake, preserving interior cleanliness and enhancing efficiency.

Manufactured by Moroso, a name synonymous with automotive performance parts, this unit weighs just 3.4 pounds yet provides robust separation capacity. Its vehicle-specific fit ensures a seamless installation without unnecessary modifications, allowing you to focus on optimizing your engine’s longevity rather than wrestling with generic adapters.

Installing this separator means fewer oil deposits in critical components, which can limit premature wear and maintain steady airflow in the intake system. Lightweight and durable, it blends modern engineering with practical benefits, making it a solid choice for serious truck owners who want to protect valuable powertrains.

Engine cleanliness stays prioritized, reducing the chance for performance dips caused by oil buildup. Its machined exterior reinforces durability while keeping maintenance straightforward, suited for regular monitoring and oil evacuation.

Best for: Enthusiasts focused on maintaining engine health and increasing the reliability of their Dodge Ram trucks during daily driving or towing.

Pros:

• Precisely matched to 5.7 and 6.1 Hemi engines for perfect fitment
• Lightweight machined aluminum construction for strength and reduced weight
• Efficient vapor and oil separation protects intake and engine components
• Simple installation tailored to vehicle-specific requirements
• Compact footprint fits neatly within engine bays without modification

Cons:

• Size and capacity might require more frequent draining under heavy use

7. K&N Engine Air Oil Separator for Chrysler & Dodge 5.7L-Compatible Models Boosts Performance

Protecting your engine from harmful oil build-up starts with an effective separation system. K&N’s air oil separator is engineered to capture blowby gases and prevent oil from contaminating your intake manifold. This prevents power reduction and minimizes the risk of premature engine detonation, critical for maintaining smooth and efficient operation under demanding conditions.

Constructed with premium OEM-style connectors and durable hoses, this device promises a tough, reliable solution that withstands daily driving and spirited performance. Machined exterior components offer robust wear resistance, ensuring longevity even with extended use.

Installation is straightforward, designed for completion within about 30 minutes without specialized tools. The separator fits seamlessly with numerous Chrysler and Dodge models equipped with a 5.7L engine, minimizing modification hassle while improving engine performance consistency.

Integrating K&N through the air intake system significantly reduces the contamination risk that typically degrades engine output over time. The result is enhanced throttle response and cleaner combustion, helping preserve engine integrity while boosting your driving experience.

Best for: Drivers aiming to secure efficient blowby protection and maintain peak engine performance in Chrysler and Dodge vehicles with compatible 5.7L engines.

Pros:

• Explicitly designed for 5.7L V8 engine fitment
• Machined exterior for durability
• OEM-quality connectors and hoses for secure installation
• Quick 30-minute installation process
• Reduces oil buildup and intake manifold contamination

Cons:

• May require periodic cleaning to maintain optimal function

8. Zreneyfex Performance-Grade Air Oil Separator for Ram 1500 TRX 6.2L SC & 5.7 HEMI

Enhance your engine’s efficiency by reducing oil vapor buildup with this specifically designed air oil separator. Crafted with durable aluminum, it withstands high temperatures and resists corrosion, making it reliable under demanding driving conditions. The sturdy build ensures long-term stability while maintaining optimal performance.

Equipped to fit select Ram 1500 TRX and 5.7 HEMI models, it offers precise compatibility that guarantees seamless integration and effective oil vapor trapping. Its operation fosters improved combustion, which can positively affect engine responsiveness and fuel economy, giving you cleaner engine internals and better overall driving safety.

Beyond function, the separator features a modern design that complements your vehicle’s interior aesthetics subtly but stylishly. This is more than a mechanical component; it’s a sophisticated upgrade that balances form and function.

Zreneyfex’s product manages oil and gas output intelligently, which helps limit engine deposits and contributes to reduced risk of engine wear and failure. It’s a practical solution for drivers focused on engine longevity and consistent performance.

Best for: Enthusiasts seeking a durable, precise-fit solution for reducing oil vapor issues in specific Ram 1500 and 5.7 HEMI engines.

Pros:

• Heavy-duty aluminum construction for lasting durability
• Resistant to corrosion and extreme heat
• Improves combustion efficiency by trapping oil vapors
• Stylish appearance that enhances vehicle interior
• Optimizes engine safety and longevity

Cons:

• Capacity of 3 ounces may require more frequent maintenance in heavy use

Key Specs Compared: Top Oil Catch Can For 5.7 Hemi

Product Name	Material	Dimensions (inches)	Capacity
RANSOTO Red Billet Aluminum	T6061 billet aluminum	9.02 x 5.39 x 4.76	Not specified
POSENG Billet Catch Can Black	Not specified	4.75 x 2.50	Not specified
BARTOO Universal Billet Aluminum	6061 Aluminum, anodized	Height 3.78 (without filter), Width 2.48	Not specified
J&L Oil Separator Stainless Steel	Stainless steel	10.7 x 6.4 x 4.1	3 oz
EVIL ENERGY Baffled Catch Can Kit	Aluminum	10.24 x 10.04 x 4.37	300 ml
Moroso Air/Oil Separator Machined	Not specified	4.5 x 7.38 x 13.75	Not specified
K&N Air Oil Separator Machined	Not specified	13.38 x 7 x 3.13	Not specified
Zreneyfex Painted Aluminum	Aluminum	8.66 x 7.09 x 2.95	Not specified

What Should You Focus on When Choosing the Best Oil Catch Can for a 5.7 Hemi?

Nailing down the right oil catch can for your 5.7 Hemi engine can feel like an unexpected puzzle. With various designs, sizes, and materials, what really separates the top performers from mere placeholders?

Here are the essential factors influencing effectiveness, durability, and overall ease of use, laid out simply.

Build Material and Resistance to Heat

The material used for the catch can’s body is a crucial cornerstone. Catch cans must endure under-hood heat and exposure to automotive fluids without warping or corroding. Most high-quality units utilize billet aluminum or stainless steel because these materials manage heat differently but both offer superior resistance. Aluminum’s lightweight nature benefits vehicles where weight matters, while stainless steel boasts robust corrosion resistance.

For example, the RANSOTO and BARTOO models use 6061 and T6061 billet aluminum respectively, giving a mix of high strength and excellent heat durability, while the J&L Separator employs stainless steel mesh filtration combined with a stainless body, offering longevity in aggressive environments.

Neglecting material quality can lead to catch cans that deteriorate fast, causing leaks or cracks that undermine the entire purpose of trapping oil vapors. Under the hood, failing material means accumulating sludge and increased risk of engine contamination over time.

Size and Spatial Fitment in Engine Bay

Engine bays, especially in high-output setups like the 5.7 Hemi, can get cramped fast. The catch can should be compact enough to fit snugly while still providing effective vapor separation. Dimension plays a vital role both for installation ease and maintenance accessibility.

Looking at specifics, the POSENG offers a compact footprint size of 4.75 x 2.50 inches, ideal for tight quarters, whereas units like the Moroso separator are larger (up to around 13.75 inches lengthwise), which may require careful mounting choices. The BARTOO unit targets compact engine bays with its slim 3.78-inch height, making it suitable for vehicles with limited clearance.

Overlooking size compatibility can lead to forced modifications or an awkward install, not to mention troublesome routine cleaning or draining that impacts long-term usability.

Oil Capacity and Drainage Convenience

The catch can’s fluid capacity defines how often you’ll need to empty it, which impacts maintenance frequency and potential mess. Containers too small will require frequent attention, while larger reservoirs might be bulky but less fuss.

J&L’s catch can offers a 3 oz (around 90 ml) capacity specifically tailored for the 5.7 Hemi, balancing size and reasonable intervals between drains. EVIL ENERGY’s model stretches this with a 300 ml reservoir, giving more volume for longer drives or heavier blow-by conditions. Many models include quick-release or knurled bases, such as the J&L’s knurled tank, enabling swift drainage without disconnecting hoses.

Failing to match capacity with your engine’s output leads to frequent overflows or neglect, risking oil re-entering the intake and nullifying the catch can’s purpose.

Filtration and Vapor Separation Technology

What actually traps those microscopic oil vapors before they foul your intake? The filtration mechanism inside the catch can defines the level of vapor removal efficiency, making it arguably the most important internal component.

Models like J&L’s use fine mesh stainless steel filters to trap tiny oil particles, while the EVIL ENERGY catch can includes a baffled design with a removable steel ball filter to enhance separation. These designs slow down airflow and create surfaces where oil vapor condenses and collects into liquid form. Proper engineering here means cleaner intake air and reduced risk of performance loss or engine knocking.

Ignoring the filtration method risks allowing oil mist to pass through and coat valves, sapping power and accelerating carbon buildup, which will eventually compromise engine efficiency and longevity.

Compatibility and Vehicle-Specific Design

While universal catch cans exist, opting for a 5.7 Hemi-specific model assures precise fit, optimized venting paths, and reduced installation hassle. Variations in hose connection size, mounting brackets, and spatial constraints mean a tailored solution wins out.

The RANSOTO unit specifically caters to Dodge Charger, Challenger, Chrysler 300, and Jeep Grand Cherokee models with HEMI engines, ensuring plug-and-play compatibility. Zreneyfex provides fitment for Ram 1500 TRX and 5.7 HEMI with exact dimensional and outlet placement alignment. Kits designed for these vehicles often come with necessary brackets and fittings, like POSENG’s Z-bracket that stabilizes mounting while easing service access.

Choosing a generic catch can without proper fit can add installation complexity, foster leaks from awkward hose routing, or cause interference with other engine systems, creating headaches in the long run.

Hose Quality and Connectivity

High-pressure crankcase ventilated gases travel via hoses into the catch can. Hose durability, leak resistance, and connector quality determine if your system stays sealed or suffers performance-killing leaks.

POSENG includes Continental INSTA» GRIP braided hoses, known for flexible yet leak-resistant fittings. K&N offers OEM-style connectors that demand a snug fit to prevent vacuum leaks. AN10 hose compatibility, like on the EVIL ENERGY kit, opens options for heavier-duty connections that resist kinks and pressure spikes.

Cheap hoses or flimsy connectors risk leaks or bursting under engine heat and pressure, causing oil vapors to bypass filtration or reducing system vacuum efficiency, impacting engine function.

Ease of Maintenance and User-Friendly Features

Running a catch can isn’t just about initial install—it’s a living system that needs periodic draining and cleaning. Features that make these tasks easier reward owners over time and reduce potential frustration.

The knurled bases on some models (J&L) allow quick removal of the reservoir for draining without needing tools or disassembly. Also, catch cans with removable internal filters let users clean components thoroughly, maintaining performance. Brackets that provide stability and quick-release screw mounts enable fast servicing, reducing downtime. Compact models like BARTOO minimize handling complexity due to smaller size.

Ignoring maintenance convenience often results in neglecting service intervals, buildup in the catch can, and eventually system failures that could send contaminants back into the engine.

Frequently Asked Questions

What makes an oil catch can suitable for the 5.7 Hemi engine?

An oil catch can tailored for the 5.7 Hemi needs to fit the engine’s specific crankcase ventilation setup and handle the volume of blowby gases typical of this V8. It must effectively trap oil vapors before they reach intake valves, which helps maintain engine efficiency and reduce carbon buildup.

For example, the J&L Oil Separator Co. model uses a fine mesh stainless steel filter designed for the 5.7 Hemi, targeting microscopic oil particles often encountered in these engines.

Ensure the catch can includes fittings and hoses compatible with your engine to avoid leaks during installation.

How often should I clean or drain the oil catch can on my 5.7 Hemi?

Regular maintenance depends on driving habits but typically every 5,000 to 10,000 miles is recommended to keep optimal performance and prevent overflow. Catch cans collect condensed oil and contaminants that, if left unattended, could reduce their efficiency.

Some models like the POSENG Billet Air Oil Separator feature an easy-access design to simplify cleaning and draining, encouraging timely upkeep.

Set a maintenance reminder to avoid neglecting the catch can, especially if you frequently drive in dusty or high-load conditions.

Do oil catch cans affect engine performance or fuel economy on the 5.7 Hemi?

Capturing oil vapors before they re-enter the intake system helps maintain cleaner valves and combustion chambers, indirectly supporting smoother performance and potentially better fuel economy by preventing deposits that impair airflow.

The K&N Engine Air Oil Separator for 5.7L models is designed to minimize power loss related to oil buildup by effectively separating blowby gases without restricting air or pressure flow.

A catch can with proper fitment ensures no added intake restriction, which is key to avoiding performance drawbacks.

What installation challenges might I face with an oil catch can on a 5.7 Hemi?

Space constraints and connection points can complicate installation. Some catch cans have larger dimensions or require repositioning hoses, which might require trimming or rerouting existing components for a secure fit.

The BARTOO Aluminum 2-Port Oil Catch Can offers a compact form factor suited for tighter engine bays, easing installation hurdles in crowded areas.

Before purchasing, measure available engine bay space and verify compatibility with your vehicle’s model year to avoid surprises.

Is material quality important for durability in 5.7 Hemi oil catch cans?

Material quality significantly affects heat resistance, corrosion protection, and overall lifespan. Billet aluminum and stainless steel constructions provide durability against harsh underhood conditions, maintaining performance over time.

The RANSOTO catch can features robust T6061 billet aluminum, combining strength with heat dissipation, ideal for demanding environments under a 5.7 Hemi hood.

Choose a catch can with corrosion-resistant finishes and solid build to reduce the chance of leaks or failures.

Enhancing Oil Control for Your 5.7 Hemi

Addressing the issue of oil vapor buildup is crucial for maintaining your engine’s health. Selecting the ideal oil catch can dramatically reduces crankcase contamination, leading to better engine longevity and sustained performance. This upgrade is essential for anyone serious about preserving their 5.7 Hemi’s power and reliability.

Choose billet aluminum catch cans if you want a combination of strength and style, while compact aluminum fits best in tight engine bays. Stainless steel models offer superior filtration and durability, making them perfect for enthusiasts who demand both efficiency and low maintenance.

Ensure proper hose connections and secure mounting to prevent leaks and vapor loss. Regularly check and clean filters to maintain peak function. Taking these steps will keep your oil catch can operating effectively, protecting your engine from long-term damage.

Last update on 2026-08-23 / Affiliate links / Images from Amazon Product Advertising API