Looking for the best engine oil moisture separator valves to keep your engine clean?
We’ve tested and reviewed the top oil separators to help you choose the perfect one for your vehicle or equipment, ensuring smooth performance and long engine life.
Keeping your engine clean is key to its long life and smooth performance. One of the best ways to do this is by using an engine oil moisture separator valve. These handy devices trap oil and moisture, stopping them from harming your engine.
They are easy to install, work well, and save you money in the long run. You’ll notice fewer oil changes and less maintenance. Your engine will run better and last longer.
We’ve tested and reviewed the top oil separators on the market. Whether you drive a truck, car, or use industrial equipment, we’ve got you covered. Let’s find the perfect one for your needs!
List of Top 10 Engine Oil Moisture Separator Valves
| Image | Title | Best For | Price |
|---|---|---|---|
 |
EA4720108262 Crankcase Ventilation Separator for Detroit DD13 DD15 Engine |
This crankcase ventilation separator is perfect for truck owners with Detroit DD13 or DD15 engines. It’s ideal for those looking to save on maintenance costs and keep their engine running cleaner. |
|
 |
EVIL ENERGY Oil Catch Can, Universal Baffled Catch Can Kit with Breather Filter, 300ml Aluminum Air Oil Separator Tank NBR Fuel Hose Kits for PCV System |
This EVIL ENERGY Oil Catch Can is perfect for car enthusiasts who want to keep their engines clean and running smoothly. It’s ideal for pre-PCV cars or anyone looking to prevent carbon buildup and extend engine life. |
|
 |
A-Premium Engine Crankcase Vent Valve Oil Separator |
This part fits your Mercedes-Benz. It works on many models like the C300, E350, and ML350 from 2005 to 2013. You can replace your old, broken valve easily. The A-Premium crankcase vent valve matches your car exactly. It is made strong with heat-resistant plastic and good rubber seals. It keeps engine oil clean and helps your car run well. The breather valve controls pressure inside the engine. No more leaks or smoke from the engine bay. Buy it with confidence today. We give a full one-year warranty. No mileage limit at all. Your peace of mind is guaranteed. |
|
 |
Industrial Service Solutions BOGE 575000101P Air/Oil Separator |
This air/oil separator is perfect for industrial workers who need clean air for their machines. It works great in factories, workshops, and places with heavy equipment. You will save money on repairs and keep your tools running smooth. |
|
 |
BAGARAATAN 750ML Oil Catch Can Kit,Universal 2-port Baffled Oil Catch Can Reservoir Tank with Breather Filter and Drain Valve（Black） |
This BAGARAATAN 750ML Oil Catch Can Kit is perfect for car owners who want to keep their engine clean and prolong its life. It’s ideal for turbocharged and naturally aspirated engines, offering better filtering and good sealing to prevent misfires and carbon buildup. |
|
 |
Moroso 85683 Universal Small Body Air/Oil Separator in Black w/Clear Bottom |
This Moroso Air/Oil Separator is perfect for car enthusiasts who want to boost engine performance and keep their intake system clean. It’s ideal for vehicles with PCV systems, helping to prevent oil deposits and improve efficiency. |
|
 |
Moroso 85667 Small Body Black Air Oil Separator Catch Can, Fits 12-19 Subaru BRZ/Scion FRS/Toyota 86 |
The Moroso 85667 Air Oil Separator is perfect for Subaru BRZ, Scion FRS, and Toyota 86 owners. These cars have a problem. The factory PCV system sends oil and moisture back into the engine. This hurts performance and durability. This catch can fixes that. It stops oil mist from entering your intake. Your engine runs cleaner. You get less detonation and fewer deposit issues. If you care about your car, this part is for you. |
|
 |
EVIL ENERGY Oil Catch Can, Universal Baffled Catch Can Kit with NBR Fuel Hose, 300ml Aluminum Air Oil Separator Tank for PCV System |
This EVIL ENERGY Oil Catch Can is perfect for car enthusiasts who want to protect their engine from oil and moisture buildup. It’s ideal for those with pre-PCV or PCV systems looking for a reliable, universal solution to keep their engine clean and running smoothly. |
|
 |
WENJTP Oil Catch Can Kit with 4 Adapters + Breather Filter Drain Valve Plug 2 Ports (1 oulet + 1 inlet) 150ml Universal Aluminum Baffled Oil Reservoir Tank Oil Separator HTRACING (Blue) |
This oil catch can kit is perfect for car owners who want to keep their engine clean and prolong its life. It’s easy to use and fits most cars, making it ideal for anyone looking to reduce impurities and prevent misfires. |
|
 |
J&L Oil Separator Co. 3.0 Oil Separator Compatible with 2019-2026 Chevy Silverado/GMC Sierra 1500 5.3L/6.2L & 2021-2026 Chevy Tahoe, Suburban, & GMC Yukon/Yukon XL 5.3L/6.2L Driver Side (Black) |
This J&L Oil Separator is perfect for Chevy and GMC owners who want to protect their engines and avoid costly repairs. It’s easy to install and keeps your vehicle running smoothly. |
Detailed Reviews
Top Engine Oil Moisture Separator Valves are expert-tested and customer-approved. These high-performance parts boost engine efficiency and cut maintenance costs. Discover the best options to keep your engine running smoothly with this ultimate guide.
1. EA4720108262 Crankcase Ventilation Separator for Detroit DD13 DD15 Engine
The EA4720108262 Crankcase Ventilation Separator is designed for Detroit DD13 DD15 engines. It keeps your engine cleaner and saves you money.
This oil separator reduces oil changes and lowers maintenance costs. It fits perfectly with no modifications needed. The included gasket makes installation easy.
Kalmaegee Service is here to help. Contact us anytime for support. We ensure your satisfaction with comfortable service.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This crankcase ventilation separator is perfect for truck owners with Detroit DD13 or DD15 engines. It’s ideal for those looking to save on maintenance costs and keep their engine running cleaner.
Ready to Purchase?
2. EVIL ENERGY Oil Catch Can, Universal Baffled Catch Can Kit with Breather Filter, 300ml Aluminum Air Oil Separator Tank NBR Fuel Hose Kits for PCV System
The EVIL ENERGY Oil Catch Can is a universal kit that keeps your engine clean. It traps oil and moisture, preventing carbon buildup. This helps your engine run smoother and last longer.
It comes with a 300ml aluminum tank and NBR fuel hoses. The baffled design includes steel balls for better performance. You can install it with or without a breather filter, depending on your needs.
Always check hose size and mounting space before installing. Professional installation is recommended for best results. Keep it clean, especially in cold weather, to avoid issues.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This EVIL ENERGY Oil Catch Can is perfect for car enthusiasts who want to keep their engines clean and running smoothly. It’s ideal for pre-PCV cars or anyone looking to prevent carbon buildup and extend engine life.
Ready to Purchase?
3. A-Premium Engine Crankcase Vent Valve Oil Separator
The A-Premium Engine Crankcase Vent Valve Oil Separator is a direct replacement for select Mercedes-Benz models. It’s built to last with premium materials that resist oil and heat. This part ensures optimal engine performance for your vehicle.
It fits perfectly and works reliably, backed by a one-year guarantee. Trust A-Premium for quality and peace of mind on the road.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This part fits your Mercedes-Benz. It works on many models like the C300, E350, and ML350 from 2005 to 2013.
You can replace your old, broken valve easily. The A-Premium crankcase vent valve matches your car exactly. It is made strong with heat-resistant plastic and good rubber seals.
It keeps engine oil clean and helps your car run well. The breather valve controls pressure inside the engine. No more leaks or smoke from the engine bay.
Buy it with confidence today. We give a full one-year warranty. No mileage limit at all. Your peace of mind is guaranteed.
Ready to Purchase?
4. Industrial Service Solutions BOGE 575000101P Air/Oil Separator
The BOGE 575000101P Air/Oil Separator keeps your machines running smoothly. It removes oil from air, protecting your engine and cutting maintenance time.
This separator works with many types of equipment. It’s built tough with steel and nylon, lasting longer than cheaper parts. Its rigid design keeps pressure steady, so your machine stays running.
It’s a cost-effective choice that boosts productivity. Perfect for demanding jobs, it helps you save money and work better. Trust it to keep your operations efficient.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This air/oil separator is perfect for industrial workers who need clean air for their machines. It works great in factories, workshops, and places with heavy equipment. You will save money on repairs and keep your tools running smooth.
Ready to Purchase?
5. BAGARAATAN 750ML Oil Catch Can Kit,Universal 2-port Baffled Oil Catch Can Reservoir Tank with Breather Filter and Drain Valve（Black）
The BAGARAATAN 750ML Oil Catch Can Kit keeps your engine clean and running smoothly. Its baffle system traps oil and moisture, preventing carbon buildup and misfires. This prolongs engine life and boosts performance.
The 750ml capacity is perfect for turbocharged engines, unlike smaller options. The washable breather filter lets air escape freely while trapping oil. It’s a complete kit with all essential parts included.
The threads are improved for better sealing, so no O-rings are needed. This saves you money and hassle in the long run.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This BAGARAATAN 750ML Oil Catch Can Kit is perfect for car owners who want to keep their engine clean and prolong its life. It’s ideal for turbocharged and naturally aspirated engines, offering better filtering and good sealing to prevent misfires and carbon buildup.
Ready to Purchase?
6. Moroso 85683 Universal Small Body Air/Oil Separator in Black w/Clear Bottom
Moroso 85683 keeps your engine clean. It stops oil mist and moisture from hurting your intake system. This air-oil separator is built tough.
It fits most vehicles easily. The billet aluminum body lasts long. Heavy duty fittings come ready to install.
Your engine runs better with clean air. Get yours today for smooth performance.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This Moroso Air/Oil Separator is perfect for car enthusiasts who want to boost engine performance and keep their intake system clean. It’s ideal for vehicles with PCV systems, helping to prevent oil deposits and improve efficiency.
Ready to Purchase?
7. Moroso 85667 Small Body Black Air Oil Separator Catch Can, Fits 12-19 Subaru BRZ/Scion FRS/Toyota 86
The Moroso 85667 Air Oil Separator is a must-have upgrade for your Subaru BRZ, Scion FRS, or Toyota 86. It’s designed to boost performance and protect your engine. This small but mighty device makes a big difference.
Your car’s PCV system vents harmful crankcase vapors back into the engine. The Moroso separator stops this, capturing oil and moisture. It keeps your intake system clean.
With the Moroso 85667, you’ll reduce detonation and prevent deposits. Your engine will run smoother and last longer. It’s an easy upgrade with big benefits.
| Pros | Cons |
|---|---|
|
|
Perfect For:
The Moroso 85667 Air Oil Separator is perfect for Subaru BRZ, Scion FRS, and Toyota 86 owners. These cars have a problem. The factory PCV system sends oil and moisture back into the engine. This hurts performance and durability. This catch can fixes that. It stops oil mist from entering your intake. Your engine runs cleaner. You get less detonation and fewer deposit issues. If you care about your car, this part is for you.
Ready to Purchase?
8. EVIL ENERGY Oil Catch Can, Universal Baffled Catch Can Kit with NBR Fuel Hose, 300ml Aluminum Air Oil Separator Tank for PCV System
The EVIL ENERGY Oil Catch Can keeps your engine clean. It traps oil and moisture to prevent carbon buildup. This 300ml aluminum tank works with your PCV system.
It has a baffled design with steel wool for better performance. The NBR fuel hose is durable and heat-resistant. Check your hose size before installing for a perfect fit.
Use it with or without a breather filter. Clean it weekly in cold weather to avoid freezing risks. Enjoy hassle-free returns and fast customer support if needed.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This EVIL ENERGY Oil Catch Can is perfect for car enthusiasts who want to protect their engine from oil and moisture buildup. It’s ideal for those with pre-PCV or PCV systems looking for a reliable, universal solution to keep their engine clean and running smoothly.
Ready to Purchase?
9. WENJTP Oil Catch Can Kit with 4 Adapters + Breather Filter Drain Valve Plug 2 Ports (1 oulet + 1 inlet) 150ml Universal Aluminum Baffled Oil Reservoir Tank Oil Separator HTRACING (Blue)
The WENJTP Oil Catch Can Kit keeps your engine clean and running smoothly. It captures oil and moisture, preventing carbon buildup and misfires.
It’s easy to clean and reusable. Just unscrew the drain valve to empty it. Works with most cars, including Honda, Toyota, and Ford.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This oil catch can kit is perfect for car owners who want to keep their engine clean and prolong its life. It’s easy to use and fits most cars, making it ideal for anyone looking to reduce impurities and prevent misfires.
Ready to Purchase?
10. J&L Oil Separator Co. 3.0 Oil Separator Compatible with 2019-2026 Chevy Silverado/GMC Sierra 1500 5.3L/6.2L & 2021-2026 Chevy Tahoe, Suburban, & GMC Yukon/Yukon XL 5.3L/6.2L Driver Side (Black)
The J&L Oil Separator Co. 3.0 is easy to install. It fits Chevy Silverado, GMC Sierra, Tahoe, Suburban, Yukon, and Yukon XL. It works with 5.3L and 6.2L engines.
This oil separator stops engine problems caused by intake issues. Its Plug-N-Play Design makes it simple to use.
It comes with a Limited Lifetime Warranty. You can service it easily when needed.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This J&L Oil Separator is perfect for Chevy and GMC owners who want to protect their engines and avoid costly repairs. It’s easy to install and keeps your vehicle running smoothly.
Ready to Purchase?
Buying Guide
Keeping your engine clean is key to its long life and smooth performance. One of the best ways to do this is by using an engine oil moisture separator valve. These handy devices trap oil and moisture, stopping them from harming your engine.
Choosing the right oil separator can save you money and keep your engine running better. Here’s what to consider when buying one:
- Compatibility: Make sure the separator fits your vehicle or equipment. Check the model and engine type before buying.
- Capacity: Choose a size that matches your engine’s needs. Larger engines may need bigger separators.
- Material: Look for durable materials like aluminum or steel. They last longer and handle heat better.
- Ease of Installation: Pick a separator that’s easy to install. Some come with gaskets or kits for quick setup.
- Maintenance: Consider how easy it is to clean and service. A reusable design saves time and money.
- Performance: Check for features like baffles or filters that improve performance and protect your engine.
- Price: Balance cost with quality. A good separator is an investment that pays off in the long run.
With these factors in mind, you’ll find the perfect oil separator for your needs. Your engine will thank you!