Looking for the best oil passage seal plates to keep your engine running smoothly? We’ve got you covered with 10 top-quality options that prevent leaks, ensure proper oil flow, and are easy to install.
Oil passage seal plates are essential parts for keeping your engine running smoothly. They prevent leaks and ensure proper oil flow, which is crucial for performance and longevity.
These plates are easy to install, fit various engines, and last a long time. Whether you’re upgrading or repairing, they’re a reliable solution for any car enthusiast.
List of Top 10 Oil Passage Seal Plates
| Image | Title | Best For | Price |
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ICT Billet LT L83 LT1 L86 Billet Engine Oil Cooler Plate Port Gasket Pan Gen V 551357 |
This is perfect for LT V8 owners who want a strong, simple oil cooler delete plate for their truck or SUV. It fits 2014 and newer Chevy and GMC LT engines and helps keep the oil path open inside the engine. |
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Fabater M8 Stainless Steel Oil Valley Block Off Plugs 8PCS for Gen IV LS LT Engines 2005-2018 AFM DOD Sealing Oil Passages VLOM Plate Kit |
These plugs are perfect for car lovers who want to fix or upgrade their 2005-2018 Gen IV or 2014-current Gen V LS and LT engines. They help stop oil leaks and keep the engine working strong and smooth. If you are changing lifters or removing the AFM system, these plugs make the job easy and safe. They fit exactly and are simple to install. This is a great choice for anyone who wants better engine performance without hassle. |
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Z Whip LS Billet Oil Port Plate On Oil Pan for Gen III IV Series Engines LS1 LSX LS2 LS3 Oil Port LQ4 LQ9 LS6 L92 L99 L33 5.3L 4.8L 5.7L 6.0L 6.2L Proudly Made In The USA |
This part is for car fans. It fits your LS engine. It is made of strong metal. It stays tough and firm. Use it to plug your oil port. This part is top quality. It is easy to use. It will last a long time. It is great for you. |
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Moroso 23790 Dry Sump Oil Pump Block-Off Plate for Chevy |
Moroso 23790 is perfect for Chevy builders who use a dry sump setup and want a fast, easy seal. It is also great for anyone who wants a light, simple part that bolts on with no drilling. |
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CNRAQR LS Engine Oil Cooler Bypass Cover Block off Plate Compatible with Gen III IV LS Engine Replace OE#12577903(No Sensor Ports) |
LS engine owners who want a simple, strong, and clean oil cooler block off plate are the perfect fit for this part. It is made for those who want easy install, reliable seal, and better flow with no sensor ports. |
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Keenso Vacuum Pump Plate Aluminum Vacuum Pump Cover O Ring Seal Oil Galley Plug Replacement for Gen V LT Engines LT1 LT2 L82 L83 L84 L86 L87 |
This part is perfect for engine builders, garage techs, and anyone who works on Gen V LT engines. It’s great for people who want a simple, clean, and tight seal after removing a vacuum pump. |
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YDuupxe Oil Valley Block Off Plugs 8PCS Stainless Steel AFM DOD Plugs for Gen IV Gen V Engines 2005 to 2018 Sealing Oil Passages Easy Removal for LS LT Rebuilds |
Perfect for car enthusiasts and mechanics, these AFM DOD plugs are ideal for engine rebuilds and lifter conversions on Gen IV and Gen V engines. They’re a must-have for sealing oil passages during LS LT repairs. |
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Oil Injection Block Off Plate Fit for Yamaha YFS200 Banshee 350 |
This block off plate is perfect for ATV riders who want to switch to manual fuel mixing. It helps keep the engine sealed and running smoothly without any oil leaks. |
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Srliya 8 AFM DOD Block Off Plugs, Stainless Steel Sealing Oil Passages for Gen IV LS 2005-2018 Gen V Engines LT |
This is perfect for LS and LT engine owners who want a simple way to block AFM oil passages. It’s great for anyone swapping to standard lifters and wants to stop oil leaks fast. |
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Oil Valley Block Off Plugs Stainless Steel Sealing Oil Passages AFM DOD Plugs for Gen IV LS Gen V Engines LT 2005-2018 |
This product is perfect for car owners and mechanics. It stops leaks and keeps engines safe. Use it on 2005-2018 engines for a quick, firm fit. |
Detailed Reviews
Find the best Oil Passage Seal Plates with a guide you can trust. Each pick is chosen with care, giving you clear facts that help you decide fast. You’ll feel confident and ready to explore more.
1. ICT Billet LT L83 LT1 L86 Billet Engine Oil Cooler Plate Port Gasket Pan Gen V 551357
The ICT Billet LT Oil Cooler Plate gives your engine a clean, open oil path. It is built to boost smooth oil flow inside your motor.
This heavy-duty aluminum plate is strong. It fits LT V8 engines. It keeps the oil passage open.
It is made in Wichita, Kansas from billet aluminum. It blocks the cooler port. It works with many Chevy and GMC trucks.
| Pros | Cons |
|---|---|
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Perfect For:
This is perfect for LT V8 owners who want a strong, simple oil cooler delete plate for their truck or SUV. It fits 2014 and newer Chevy and GMC LT engines and helps keep the oil path open inside the engine.
Ready to Purchase?
2. Fabater M8 Stainless Steel Oil Valley Block Off Plugs 8PCS for Gen IV LS LT Engines 2005-2018 AFM DOD Sealing Oil Passages VLOM Plate Kit
These plugs fit right. They seal tight. They keep your engine safe.
They block the AFM oil passages with ease. Your oil pressure stays strong.
Install them fast with a simple tap. Removal is easy with the threaded top.
| Pros | Cons |
|---|---|
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Perfect For:
These plugs are perfect for car lovers who want to fix or upgrade their 2005-2018 Gen IV or 2014-current Gen V LS and LT engines. They help stop oil leaks and keep the engine working strong and smooth. If you are changing lifters or removing the AFM system, these plugs make the job easy and safe. They fit exactly and are simple to install. This is a great choice for anyone who wants better engine performance without hassle.
Ready to Purchase?
3. Z Whip LS Billet Oil Port Plate On Oil Pan for Gen III IV Series Engines LS1 LSX LS2 LS3 Oil Port LQ4 LQ9 LS6 L92 L99 L33 5.3L 4.8L 5.7L 6.0L 6.2L Proudly Made In The USA
Block your oil port the right way. This tough metal plate fits your LS swap.
We build parts for jet planes. You get that same top quality for your car.
Protect your engine with the best fit. Stop leaks with real strength. Buy your new plate right now.
| Pros | Cons |
|---|---|
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Perfect For:
This part is for car fans. It fits your LS engine. It is made of strong metal. It stays tough and firm. Use it to plug your oil port. This part is top quality. It is easy to use. It will last a long time. It is great for you.
Ready to Purchase?
4. Moroso 23790 Dry Sump Oil Pump Block-Off Plate for Chevy
Seal your Chevy motor fast. This Moroso plate is made to last.
It bolts on fast with no drill work. The light plate fits small and big blocks. It stops oil leaks with a tight seal.
Get the best fit for your race car. Buy this tough metal plate now.
| Pros | Cons |
|---|---|
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Perfect For:
Moroso 23790 is perfect for Chevy builders who use a dry sump setup and want a fast, easy seal. It is also great for anyone who wants a light, simple part that bolts on with no drilling.
Ready to Purchase?
5. CNRAQR LS Engine Oil Cooler Bypass Cover Block off Plate Compatible with Gen III IV LS Engine Replace OE#12577903(No Sensor Ports)
Upgrade your car with this strong oil bypass plate. It fits GM LS engines in a snap.
Made from strong metal, it boosts oil flow. You get a tight seal that stops all leaks. New steel bolts come in the box too.
Bolt it on with no hassle or fuss. Enjoy smooth oil flow for a long time. You get full support and a two month return.
| Pros | Cons |
|---|---|
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Perfect For:
LS engine owners who want a simple, strong, and clean oil cooler block off plate are the perfect fit for this part. It is made for those who want easy install, reliable seal, and better flow with no sensor ports.
Ready to Purchase?
6. Keenso Vacuum Pump Plate Aluminum Vacuum Pump Cover O Ring Seal Oil Galley Plug Replacement for Gen V LT Engines LT1 LT2 L82 L83 L84 L86 L87
The Keenso Vacuum Pump Plate is a perfect replacement part for Gen V LT engines. It plugs the oil galley after removing the vacuum pump with ease.
This cover fits all Gen V engines from 2014 and newer. It has a strong aluminum build. The O ring seal means no leaks.
It is great for engine repairs and swaps. The design matches original specs for a perfect fit.
| Pros | Cons |
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Perfect For:
This part is perfect for engine builders, garage techs, and anyone who works on Gen V LT engines. It’s great for people who want a simple, clean, and tight seal after removing a vacuum pump.
Ready to Purchase?
7. YDuupxe Oil Valley Block Off Plugs 8PCS Stainless Steel AFM DOD Plugs for Gen IV Gen V Engines 2005 to 2018 Sealing Oil Passages Easy Removal for LS LT Rebuilds
YDuupxe Oil Valley Block Off Plugs are perfect for sealing AFM DOD oil passages. They fit Gen IV and Gen V engines from 2005 to 2018. Each pack includes 8 stainless steel plugs for easy installation.
These plugs are made of durable stainless steel. They install flush in the passage holes for a clean finish. The threaded top makes removal simple when needed.
Use them when replacing DOD AFM lifters with conventional ones. Ideal for engine rebuilds and repairs. Simple to install in any workshop or garage.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for car enthusiasts and mechanics, these AFM DOD plugs are ideal for engine rebuilds and lifter conversions on Gen IV and Gen V engines. They’re a must-have for sealing oil passages during LS LT repairs.
Ready to Purchase?
8. Oil Injection Block Off Plate Fit for Yamaha YFS200 Banshee 350
The Oil Injection Block Off Plate is a perfect fit for Yamaha YFS200 Blaster and Banshee 350 models. It seals the oil injection passage, allowing for a manual premix fuel oil circuit transformation.
This plate has an auxiliary gasket for tight sealing, direct mounting with no modifications needed, and is an upgrade fitting for ATV fuel supply system changes. It’s easy to install, works well, and lasts long.
| Pros | Cons |
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Perfect For:
This block off plate is perfect for ATV riders who want to switch to manual fuel mixing. It helps keep the engine sealed and running smoothly without any oil leaks.
Ready to Purchase?
9. Srliya 8 AFM DOD Block Off Plugs, Stainless Steel Sealing Oil Passages for Gen IV LS 2005-2018 Gen V Engines LT
Srliya AFM/DOD Block Off Plugs give your engine a clean seal. They help stop oil from leaking inside the block.
They fit Gen IV and Gen V engines. They slide in fast. They hold tight.
They use stainless steel for strength. They help when you swap lifters. They keep oil pressure steady.
| Pros | Cons |
|---|---|
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Perfect For:
This is perfect for LS and LT engine owners who want a simple way to block AFM oil passages. It’s great for anyone swapping to standard lifters and wants to stop oil leaks fast.
Ready to Purchase?
10. Oil Valley Block Off Plugs Stainless Steel Sealing Oil Passages AFM DOD Plugs for Gen IV LS Gen V Engines LT 2005-2018
The Oil Valley Block Off Plugs are made from stainless steel. They seal oil passages in 2005-2018 Gen IV and Gen V engines.
They stop oil leaks and keep your engine running well. Easy to install with a simple tap. Fits stock DOD AFM valley covers only.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for car owners and mechanics. It stops leaks and keeps engines safe. Use it on 2005-2018 engines for a quick, firm fit.
Ready to Purchase?
Buying Guide
Oil passage seal plates keep your engine safe. They help your motor stay smooth and strong.
You want a guide that feels simple and clear. You get quick tips that make buying easy and stress‑free.
Factors to Consider When Buying Oil Passage Seal Plates
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Material Quality: Strong metal lasts longer. It keeps the seal tight. It helps your engine stay safe.
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Fit and Compatibility: Make sure the plate matches your engine model. A correct fit stops leaks. It also keeps oil flow steady.
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Seal Strength: A good seal keeps pressure high. It blocks unwanted oil flow. It protects your engine from damage.
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Ease of Installation: Simple install saves time. Clear design helps you avoid mistakes. You get a clean setup fast.
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Durability: Tough parts handle heat and pressure. They stay solid for years. They keep your engine running well.
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Corrosion Resistance: Rust-free metal stays strong. It keeps the seal clean. It helps your engine stay smooth.
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Design Features: Some plates have O-rings or threaded tops. These make sealing better. They also make removal easy.
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Brand Reliability: Trusted makers offer better build. They test their parts well. You get steady performance.
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Purpose of Use: Choose plates for swaps, rebuilds, or upgrades. Pick the style your project needs. This gives you the best results.
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Included Hardware: Some kits include bolts or plugs. This makes the job easier. You get everything in one box.