Best Onan Engine Gaskets

Looking for the best Onan engine gaskets to keep your engine running smoothly? We’ve tested and reviewed the top 10 picks, from valve grind kits to oil pan gaskets, to help you find the perfect fit for your needs.

Onan engines are known for their reliability, but even the best engines need quality gaskets to keep them running smoothly. Whether you’re fixing a leak or doing a full rebuild, the right gasket kit makes all the difference.

We’ve tested and reviewed the best Onan engine gaskets to help you find the perfect fit. From valve grind kits to oil pan gaskets, we’ve got you covered. Discover the top picks that ensure your engine stays strong and efficient.

List of Top 10 Onan Engine Gaskets

Title	Best For	Price
110-3181 Valve Grind Head Gasket Kit Compatible with ONAN B48 B43 BF P220 P218 P216 P216G P218G P220G Engine	This gasket kit is perfect for anyone fixing or maintaining their Onan B & P Series engines. It’s made for mechanics, DIY repairers, and engine owners who want strong, long-lasting parts that fit right the first time.	View on Amazon (paid link)
Dgdhf Replacement Intake Manifold Mounting Gaskets Fits Onan Engine Intake Manifold Mounting Gaskets 154-2495, HE154-2495 (Set of 2)	Fits Onan engines. It stops leaks, cuts noise, and keeps engines running smooth.	View on Amazon (paid link)
Goodbest New Complete Rebuild Gasket Kit Compatible with Onan Small Bore P and B Series Linamar LX720 LX770 LX790 John Deere 318 Replace 168-0187 168-0140 HE168-0189 HE168-0187	This gasket kit is perfect for anyone with an Onan Small Bore P or B Series engine, a Linamar LX720, LX770, or LX790, or a John Deere 318 Lawn Tractor. It’s easy to use and includes everything you need for a complete rebuild.	View on Amazon (paid link)
YQABLE Valve Grind Head Gasket Kit 110-3181 1103181 Replacement for Onan BF B43 48 P216 P218 P220 OL16 OL18 LX720 Engine	This kit is perfect for mechanics, DIY repairers, and anyone keeping their Onan engines running strong. It’s made for those who want a durable gasket kit that fits right the first time.	View on Amazon (paid link)
Oil Pan Gasket for Onan BF B43-B48 P216-P220, Bottom Gasket Kit for Onan B43M B43G B48M B48G B48E Engines, Replace 5308036 5308037	This oil pan gasket kit is perfect for anyone fixing or maintaining their Onan BF or B-series engines. It’s made for mechanics, DIY repairers, and equipment owners who want a reliable fit and long-lasting seal.	View on Amazon (paid link)
Nimiah Replacement Intake Manifold Mounting Gaskets Fits Cummins Onan 154-2495, HE154-2495 (2 Pack)	This product is perfect for mechanics, farm owners, and DIY repair pros who need a reliable gasket for their Cummins Onan engines. It’s ideal for anyone who wants a tight seal that resists fuel and oil leaks.	View on Amazon (paid link)
Carbman 110-3181 Valve Grind Head Gasket Kit for ONAN BF-B43-48 & P 216-218-220 P216G P218G P220G Replaces 1103181	This Carbman 110-3181 Valve Grind Head Gasket Kit is perfect for anyone with an Onan BF, BG, B43, B48, P-216, P-218, or P-220 engine. It’s easy to install, but professional help is recommended.	View on Amazon (paid link)
110-3181 Valve Grind Head Gasket Kit Fits for ONAN 110-3181 Compatible with Onan B48 B43 BF P220 P218 P216 Engine Replace 110-3181	This Valve Grind Head Gasket Kit is perfect for anyone with an ONAN engine like the B48, B43, BF, P220, P218, or P216. It’s easy to install and fits perfectly, making it ideal for quick repairs.	View on Amazon (paid link)
Valve Grind Head Gasket Kit Fits Onan B48 B43 BF P220 P218 P 216 Engine Replace 110-3181	This kit is perfect for mechanics and DIY engine owners who want a reliable fit and long-lasting performance for their Onan engines. It’s made for anyone who values easy installation and premium quality parts.	View on Amazon (paid link)
ALL-CARB 110-3181 Gasket Kit Grind Head Replacement for Onan BF-B43-48 and P-216-218-220 Engines	This gasket kit is perfect for anyone who owns an Onan BF-B43-48 or P-216-218-220 engine and wants to keep it running strong. It’s ideal for people who need a reliable replacement part to extend engine life with simple, regular care.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Onan Engine Gaskets handpicked for reliability and performance. Each product is expert-reviewed and customer-approved, ensuring you get the best fit for your engine. Whether you need durability, easy installation, or affordability, this guide has you covered—read on to find your perfect match!

1. 110-3181 Valve Grind Head Gasket Kit Compatible with ONAN B48 B43 BF P220 P218 P216 P216G P218G P220G Engine

The 110-3181 Valve Grind Head Gasket Kit is a must-have for Onan engine owners. It’s compatible with B48, B43, BF, P220, P218, P216, and more. This kit ensures a perfect fit for your engine.

This gasket kit includes two head gaskets and other essential parts. All items are clearly shown in the product pictures. It’s made of high-quality paper and fiber, so it’s durable and long-lasting.

The 110-3181 kit works with B & P Series engines. It’s easy to install and reliable. Keep your engine running smoothly with this trusted gasket kit.

Pros	Cons
Fits multiple Onan engines, ensuring wide compatibility. High-quality materials for durable, long-lasting performance. Complete gasket kit included for easy installation. Detailed product pictures show exactly what’s included.	Limited compatibility outside listed Onan engines Paper/fiber material may wear faster under heavy use No extra parts beyond basic gasket kit included

Perfect For:

This gasket kit is perfect for anyone fixing or maintaining their Onan B & P Series engines. It’s made for mechanics, DIY repairers, and engine owners who want strong, long-lasting parts that fit right the first time.

Ready to Purchase?

View Price on Amazon (paid link)

2. Dgdhf Replacement Intake Manifold Mounting Gaskets Fits Onan Engine Intake Manifold Mounting Gaskets 154-2495, HE154-2495 (Set of 2)

Keep your Onan engine running strong with these replacement intake manifold mounting gaskets. Made from oil and gas resistant fiber, they deliver a tight seal that keeps your engine performing at its best.

These gaskets fit a wide range of Onan models and replace multiple part numbers, making them a reliable choice for quick fixes. They help prevent air leaks, improve combustion efficiency, and reduce noise and vibration.

Protect your engine. Extend its life. Drive with confidence.

Pros	Cons
Oil & gas resistant for lasting durability Perfect fit for multiple Onan models Stops air leaks to boost engine power Cuts noise and reduces vibration Protects engine from dust and damage	Not universal fit — only works with specific Onan models Limited pack size — comes with just 2 gaskets No extras included — lacks bolts or installation tools

Perfect For:

Fits Onan engines. It stops leaks, cuts noise, and keeps engines running smooth.

Ready to Purchase?

View Price on Amazon (paid link)

3. Goodbest New Complete Rebuild Gasket Kit Compatible with Onan Small Bore P and B Series Linamar LX720 LX770 LX790 John Deere 318 Replace 168-0187 168-0140 HE168-0189 HE168-0187

Goodbest New Complete Rebuild Gasket Kit Compatible with Onan Small Bore P and B Series Linamar LX720 LX770 LX790 John Deere 318 Replace 168-0187 168-0140 HE168-0189 HE168-0187

This complete rebuild gasket kit is made to fit right. It replaces #168-0187, 168-0140, HE168-0189, HE168-0187. It gives you the parts you need in one set.

It works with Onan Small Bore P and B Series engines like P216, P218, P220, BF, BG, B48, B43M, B43G, CCK, CCKA, CK. It also fits Linamar LX720, LX770, LX790. Plus, it matches the John Deere 318 Lawn Tractor.

The package includes 1 gasket kit. It’s built for easy replacement.

Pros	Cons
Perfect fit for Onan, Linamar, and John Deere. Easy replacement with trusted part numbers. All-in-one kit for quick rebuilds. Reliable performance with durable gasket design. Simple package includes everything you need.	Only fits specific models — not universal. Single kit included — no extras or spares. Limited compatibility — check numbers before buying.

Perfect For:

This gasket kit is perfect for anyone with an Onan Small Bore P or B Series engine, a Linamar LX720, LX770, or LX790, or a John Deere 318 Lawn Tractor. It’s easy to use and includes everything you need for a complete rebuild.

Ready to Purchase?

View Price on Amazon (paid link)

4. YQABLE Valve Grind Head Gasket Kit 110-3181 1103181 Replacement for Onan BF B43 48 P216 P218 P220 OL16 OL18 LX720 Engine

This gasket kit is built for strength. It fits a wide range of Onan engines. The set includes everything you need for a solid repair.

Made with premium quality materials, it ensures long-lasting performance. Always check the part number before ordering.

Pros	Cons
Exact fit for many Onan engines Durable build with high-quality materials Complete kit includes everything pictured Easy install with correct part numbers Reliable performance for long-lasting use	No installation tools included, so you’ll need to buy them separately. Not a universal fit, check compatibility before buying to avoid returns. No warranty information provided, which might be a concern for some buyers.

Perfect For:

This kit is perfect for mechanics, DIY repairers, and anyone keeping their Onan engines running strong. It’s made for those who want a durable gasket kit that fits right the first time.

Ready to Purchase?

View Price on Amazon (paid link)

5. Oil Pan Gasket for Onan BF B43-B48 P216-P220, Bottom Gasket Kit for Onan B43M B43G B48M B48G B48E Engines, Replace 5308036 5308037

This oil pan gasket kit is a perfect replacement for Onan BF and B series engines. It fits models like B43, B48, P216, and P220. The kit includes one bottom gasket for easy installation.

We offer a 24-month warranty for peace of mind. Our customer service team responds within 24 hours to help with any questions or fitment issues.

Pros	Cons
Replaces 5308036 and 5308037 perfectly. Fits Onan BF B43-B48 and P216-P220 engines. Includes oil pan bottom gasket kit for easy installation. 24-month warranty ensures peace of mind.	Limited engine compatibility—only fits specific Onan models. No installation tools included—you’ll need to buy separately. Single-use gasket—not reusable after installation.

Perfect For:

This oil pan gasket kit is perfect for anyone fixing or maintaining their Onan BF or B-series engines. It’s made for mechanics, DIY repairers, and equipment owners who want a reliable fit and long-lasting seal.

Ready to Purchase?

View Price on Amazon (paid link)

6. Nimiah Replacement Intake Manifold Mounting Gaskets Fits Cummins Onan 154-2495, HE154-2495 (2 Pack)

The Nimiah Replacement Intake Manifold Mounting Gaskets are built to fit Cummins Onan engines with precision. They replace part numbers Onan 154-2495 and John Deere HE154-2495, along with several others.

These gaskets work on a wide range of Onan models including BF, BG, BGA, B43, B48, P216, P218, P220, P224, OL series, and LX series. The composite material ensures a tight seal that resists fuel and oil.

Strong seal. Easy fit. Long-lasting performance.

Pros	Cons
Perfect fit for many Onan models Strong seal with fuel and oil resistance Easy replacement for multiple part numbers Durable composite material built to last Brand-new item in original packaging	Not OEM parts, may lack factory precision Limited compatibility outside listed Onan models No extras included beyond gaskets

Perfect For:

This product is perfect for mechanics, farm owners, and DIY repair pros who need a reliable gasket for their Cummins Onan engines. It’s ideal for anyone who wants a tight seal that resists fuel and oil leaks.

Ready to Purchase?

View Price on Amazon (paid link)

7. Carbman 110-3181 Valve Grind Head Gasket Kit for ONAN BF-B43-48 & P 216-218-220 P216G P218G P220G Replaces 1103181

The Carbman 110-3181 Valve Grind Head Gasket Kit is built to keep your Onan engines running strong. It’s a direct replacement for part number 110-3181 and fits multiple B & P Series models with ease.

It’s easy to install. It fits BF, BG, B43, B48, P-216, P-218, P-220, P-216V, P-218V, P-220V engines. It comes with two head gaskets. Need help? Contact us anytime and get a reply within 24 hours.

Pros	Cons
Direct replacement for part number 110-3181 Fits multiple engines in the Onan B & P Series Two head gaskets included for reliable performance Easy installation with professional support recommended Fast customer service replies within 24 hours	No instructions included for installation Professional help may be needed to install Limited compatibility outside listed engine models

Perfect For:

This Carbman 110-3181 Valve Grind Head Gasket Kit is perfect for anyone with an Onan BF, BG, B43, B48, P-216, P-218, or P-220 engine. It’s easy to install, but professional help is recommended.

Ready to Purchase?

View Price on Amazon (paid link)

8. 110-3181 Valve Grind Head Gasket Kit Fits for ONAN 110-3181 Compatible with Onan B48 B43 BF P220 P218 P216 Engine Replace 110-3181

The 110-3181 Valve Grind Head Gasket Kit is designed for ONAN engines. It fits models like B48, B43, and P220.

This kit includes all gaskets shown in the main picture. Check your model number to ensure a perfect fit.

Easy to install, brand new, and high quality. Contact us with any questions for quick help.

Pros	Cons
Fits perfectly with ONAN engines for reliable performance. Easy installation saves time and hassle. High-quality materials ensure long-lasting durability. Complete kit includes everything shown in the main picture.	Only fits specific engines — not universal. No extra parts included — just the gasket kit. Requires careful model check before purchase.

Perfect For:

This Valve Grind Head Gasket Kit is perfect for anyone with an ONAN engine like the B48, B43, BF, P220, P218, or P216. It’s easy to install and fits perfectly, making it ideal for quick repairs.

Ready to Purchase?

View Price on Amazon (paid link)

9. Valve Grind Head Gasket Kit Fits Onan B48 B43 BF P220 P218 P 216 Engine Replace 110-3181

This Valve Grind Head Gasket Kit is built with premium quality materials for strength and durability. It offers a direct fit for easy installation and reliable performance.

It replaces part number 110-3181. It fits Onan B48 B43 BF P220 P218 P 216 engines. It comes with a 12-month warranty for peace of mind.

Pros	Cons
Premium quality for long-lasting use Direct fit makes install quick and easy OEM standard tested for top performance Wide compatibility with Onan engines 12-month warranty for worry-free buying	Limited vehicle compatibility, only fits specific Onan engines. No installation tools included, requires extra purchase. Warranty covers only 12 months, shorter than some competitors.

Perfect For:

This kit is perfect for mechanics and DIY engine owners who want a reliable fit and long-lasting performance for their Onan engines. It’s made for anyone who values easy installation and premium quality parts.

Ready to Purchase?

View Price on Amazon (paid link)

10. ALL-CARB 110-3181 Gasket Kit Grind Head Replacement for Onan BF-B43-48 and P-216-218-220 Engines

The ALL-CARB 110-3181 Gasket Kit is built for precision. It’s a direct replacement for Onan BF-B43-48 and P-216-218-220 engines. Simple, reliable, and made to fit right.

It replaces part number #110-3181. The kit includes 1x Grind Head Gasket Kit. Easy install. Strong performance.

Keep your engine running longer. Clean the cooling fins, adjust the valves every 200 hours, and use this kit to extend life. Always verify the part number before ordering.

Pros	Cons
Fits perfectly with ONAN BF-B43-48 and P engines Direct replacement for part number #110-3181 Easy install with included gasket kit Boosts engine life when maintained every 200 hours	Not universal: Only fits specific Onan engines, check compatibility first. Maintenance required: Needs carbon cleaning and valve adjustments every 200 hours. No extras included: Just the gasket kit, no tools or accessories.

Perfect For:

This gasket kit is perfect for anyone who owns an Onan BF-B43-48 or P-216-218-220 engine and wants to keep it running strong. It’s ideal for people who need a reliable replacement part to extend engine life with simple, regular care.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Buying the right Onan engine gasket is simple. The right kit saves time. A good seal keeps your engine strong.

Here’s what to look for:

Compatibility: Always check the part number and your engine model. A gasket that doesn’t fit will cause leaks and waste money. Match the kit to your exact Onan series.
Material Quality: Look for fiber, paper, or composite materials that resist oil and fuel. Strong materials last longer and keep the seal tight.
Type of Kit: Decide if you need a valve grind kit, oil pan gasket, or a complete rebuild kit. Each serves a different purpose, so pick based on your repair job.
Ease of Installation: Choose kits that are easy to install with clear parts included. This saves time and avoids mistakes during repair.
Durability: A gasket should be long-lasting. Durable kits reduce the need for frequent replacements and keep your engine efficient.
Warranty & Support: Kits with a warranty or customer support give peace of mind. If something goes wrong, you’ll have help.
Performance Impact: A good gasket prevents air leaks, improves combustion efficiency, and reduces noise and vibration. This keeps your engine smooth and reliable.
Price vs Value: Don’t just go for the cheapest option. A slightly higher price for better quality often means fewer problems later.

With these factors in mind, you’ll find the best Onan gasket kit that fits your engine and keeps it running at its best.