Best Onan Engine Gasket Sets

Looking for the best Onan engine gasket sets? We’ve tested and reviewed the top 10 options to help you find the perfect fit for your repair or overhaul needs.

Onan engines are known for their reliability, but even the best engines need quality gaskets to keep them running smoothly. Whether you’re repairing or overhauling, the right gasket set can make all the difference.

We’ve tested and reviewed the best Onan engine gasket sets to help you find the perfect fit. From valve grind kits to oil pan rebuilds, these sets are durable, easy to install, and built to last.

List of Top 10 Onan Engine Gasket Sets

Title	Best For	Price
110-3181 Valve Grind Head Gasket Kit for ONAN B48 B43 BF P220 P218 Engine	This kit is perfect for DIY engine owners and small‑engine pros who want a fast, clean fix. It helps anyone who needs strong, reliable gaskets for their Onan engine.	View on Amazon (paid link)
Engines Gasket Kits For Onan LX720 LX770 P216 P218 P220 BF BG B48 B43M B43G CCK CCKA CK For John D318 168-0187 168-0140 HE168-0189 110-3181	This kit is perfect for DIY owners and small‑engine fans who want a simple, reliable fix for their Onan or John Deere machines. It’s great for anyone who needs quick, clean, and easy gasket replacement.	View on Amazon (paid link)
Lil Red Barn Onan Rings & Gasket Kit B43 B48 P216 P218 P220 Early 113-0314	This kit is perfect for small‑engine owners who want an easy, reliable fix for their early Onan opposed‑twin engines. It’s great for anyone who needs correct rings and gaskets that match the early-style piston and standard 3.25 inch bore.	View on Amazon (paid link)
168-0187 Gasket Kits for ONAN LX720 LX770 LX790 168-0140 HE168-0189 HE168-0187 Small Bore P and B Series Gasket P216 P218 P220 BF BG B48 B43M B43G 110-3181 CCK CCKA CK top end	This gasket kit is perfect for anyone who owns an Onan generator or a John D 318 model. It’s ideal for repairs and maintenance on specific models like the LX720, LX770, LX790, and Small Bore P and B Series.	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)	This product is perfect for Onan engine owners who need reliable replacement gaskets. It’s easy to install and keeps your engine running smoothly.	View on Amazon (paid link)
Lil Red Barn Compatible with Onan Standard Ring Set Part Number 113-0310.STD and Engine Gaskets with Crankshaft Seals & Valve Seals Fits B43 B48 Early P216 P218	This product is perfect for owners of Onan B-series and P-series engines who need a complete gasket set and standard-bore ring sets. It’s ideal for late-style pistons with a 3.25-inch bore.	View on Amazon (paid link)
Lil Red Barn Complete Gasket Set with Crankshaft Seals Valve Seals Compatible with Onan P220, P218, P216 Engines, silver	This Lil Red Barn Gasket Set is perfect for anyone who needs reliable, high-quality parts to repair their Onan P220, P218, or P216 engine. It’s ideal for those who want durable metal-clad materials, not cheap fiber, to prevent head gasket blowouts and keep their engine running smoothly.	View on Amazon (paid link)
Lil Red Barn Onan B43 B48 BF BG Overhaul Kit + Valves Pistons Gaskets 3.250	This kit is perfect for anyone who wants to keep their Onan B/BF/BG engine running strong with parts that fit right and last long. It’s great for owners who want a simple, complete, and ready-to-install overhaul kit.	View on Amazon (paid link)
110-3181 Valve Grind Head Gasket Kit Fits for ONAN 110-3181 for Onan BF B43 B48 P220 P218 P216 Engine	This kit is perfect for engine owners who want fast, simple fixes for their ONAN BF, B43, B48, P216, P218, or P220 engines. It works great for anyone who needs a reliable gasket kit to keep their machine running smooth.	View on Amazon (paid link)
Tuzliufi Oil Pan Bottom Rebuild Gasket Set Kit Seal Rings Compatible with Onan BF B43M B43G B48M B48G B48E P216 P218 P220 Engines 5308037 5308036 Z455	This product is perfect for engine owners who want a simple, reliable fix for worn oil pan seals. It suits anyone who needs a quick, clear replacement kit that matches their Onan engines with no guesswork.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 Onan Engine Gasket Sets in our expert-curated guide. Each set is thoroughly reviewed for performance, durability, and value, ensuring you find the perfect fit for your engine. Whether you need a complete overhaul or a specific replacement, this guide makes your choice easy and confident.

1. 110-3181 Valve Grind Head Gasket Kit for ONAN B48 B43 BF P220 P218 Engine

The 110-3181 Valve Grind Head Gasket Kit gives your engine a strong, clean seal. It fits many Onan B and P Series engines with ease.

The kit is durable. The parts are easy to install. The materials are long‑lasting.

Pros	Cons
Fits many engines for easy use Strong materials that last Clear parts list for quick install Reliable seal for smooth performance Great value in one full kit	Limited to specific Onan engines, not universal. No tools or instructions included in the kit. Paper and fiber materials may wear out faster.

Perfect For:

This kit is perfect for DIY engine owners and small‑engine pros who want a fast, clean fix. It helps anyone who needs strong, reliable gaskets for their Onan engine.

Ready to Purchase?

View Price on Amazon (paid link)

2. Engines Gasket Kits For Onan LX720 LX770 P216 P218 P220 BF BG B48 B43M B43G CCK CCKA CK For John D318 168-0187 168-0140 HE168-0189 110-3181

This gasket kit is built for Onan engines and John Deere 318 tractors. It helps keep your engine sealed and running smooth.

It fits many Onan models. It replaces key OEM numbers. It comes with 18 gaskets.

Check the images and model numbers before you buy. The brand offers strong customer support if you need help.

Pros	Cons
Fits many engines with ease Simple part number match Strong gasket set Clear model guidance Helpful customer support	No installation guide included, making setup tricky for beginners. Limited compatibility with specific models only, check before buying. No warranty details provided, potential risk for buyers.

Perfect For:

This kit is perfect for DIY owners and small‑engine fans who want a simple, reliable fix for their Onan or John Deere machines. It’s great for anyone who needs quick, clean, and easy gasket replacement.

Ready to Purchase?

View Price on Amazon (paid link)

3. Lil Red Barn Onan Rings & Gasket Kit B43 B48 P216 P218 P220 Early 113-0314

The Lil Red Barn Onan Rings & Gasket Kit is a complete solution for your opposed-twin engine. It includes gaskets, crankshaft seals, and piston ring sets for a standard 3.25-inch bore.

This kit fits early Onan B-series and P/Performer-series engines. It’s designed for early-style pistons with specific ring grooves. Always check your bore size before ordering.

Pros	Cons
Full kit for fast, easy engine work Strong fit for many Onan B and P engines Made for early-style pistons Helps restore smooth engine power Clear sizing for the right bore every time	Not for late-style pistons – Check your grooves before buying. Standard bore only – Oversized cylinders need a different ring set. No pistons or rods – Deeper rebuilds require extra parts.

Perfect For:

This kit is perfect for small‑engine owners who want an easy, reliable fix for their early Onan opposed‑twin engines. It’s great for anyone who needs correct rings and gaskets that match the early-style piston and standard 3.25 inch bore.

Ready to Purchase?

View Price on Amazon (paid link)

4. 168-0187 Gasket Kits for ONAN LX720 LX770 LX790 168-0140 HE168-0189 HE168-0187 Small Bore P and B Series Gasket P216 P218 P220 BF BG B48 B43M B43G 110-3181 CCK CCKA CK top end

168-0187 Gasket Kits for ONAN LX720 LX770 LX790 168-0140 HE168-0189 HE168-0187 Small Bore P and B Series Gasket P216 P218 P220 BF BG B48 B43M B43G 110-3181 CCK CCKA CK top end

This complete gasket set is a perfect fit for Onan LX720, LX770, and LX790 models. It also works with Small Bore P and B Series engines, including P216, P218, P220, BF, BG, B48, B43M, and B43G. Plus, it’s compatible with John D 318 models.

This kit replaces multiple part numbers, like 168-0187, 168-0140, HE168-0189, HE168-0187, and 110-3181. It’s a reliable solution for your top-end gasket needs.

Pros	Cons
Full set for quick, easy repairs Fits many Onan P and B engines Strong seal for smooth engine work Simple install with clear parts Great value for wide model use	Not universal: May not fit all engine models or brands. Limited use: Only for specific repairs, not full engine overhauls. No tools included: Requires separate purchase for installation.

Perfect For:

This gasket kit is perfect for anyone who owns an Onan generator or a John D 318 model. It’s ideal for repairs and maintenance on specific models like the LX720, LX770, LX790, and Small Bore P and B Series.

Ready to Purchase?

View Price on Amazon (paid link)

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

Dgdhf Replacement Intake Manifold Mounting Gaskets are oil and gas resistant, made from durable fiber to ensure a tight seal. They fit Onan engines and replace multiple part numbers, making them a reliable choice for your engine needs.

These gaskets prevent air leaks, reduce noise, and protect your engine from dust and impurities. They improve performance and extend engine life, ensuring smooth operation.

Pros	Cons
Resists oil and gas, ensuring long-lasting durability. Fits multiple Onan models, offering wide compatibility. Prevents air leaks, boosting engine efficiency and power. Reduces noise and vibration, enhancing driving comfort. Protects engine from dust, extending component lifespan.	No installation tools included, requiring extra purchases. Limited compatibility with non-Onan engine models. Set of only two, may not cover all needs.

Perfect For:

This product is perfect for Onan engine owners who need reliable replacement gaskets. It’s easy to install and keeps your engine running smoothly.

Ready to Purchase?

View Price on Amazon (paid link)

6. Lil Red Barn Compatible with Onan Standard Ring Set Part Number 113-0310.STD and Engine Gaskets with Crankshaft Seals & Valve Seals Fits B43 B48 Early P216 P218

Lil Red Barn Compatible with Onan Standard Ring Set Part Number 113-0310.STD and Engine Gaskets with Crankshaft Seals & Valve Seals Fits B43 B48 Early P216 P218

The Lil Red Barn kit is a complete solution for your Onan engine. It includes gaskets, crankshaft seals, valve seals, and ring sets, ensuring a perfect fit for specific Onan models.

This kit is designed for late-style pistons with a 3.25-inch standard bore. It fits B-series and P-series engines, including B43, B48, P216, and P218. Measure your ring grooves to ensure compatibility. Avoid oversize bores unless specified.

Pros	Cons
Complete kit includes gaskets, seals, and rings for easy repairs. Fits multiple Onan engines, saving time and effort. Standard bore size ensures perfect fit for 3.25-inch cylinders. Late-style rings match modern pistons for reliable performance.	Not for early pistons—check your ring groove size before buying. Doesn’t fit oversize bores—confirm your bore size first. No pistons included—this is a gasket and ring set only.

Perfect For:

This product is perfect for owners of Onan B-series and P-series engines who need a complete gasket set and standard-bore ring sets. It’s ideal for late-style pistons with a 3.25-inch bore.

Ready to Purchase?

View Price on Amazon (paid link)

7. Lil Red Barn Complete Gasket Set with Crankshaft Seals Valve Seals Compatible with Onan P220, P218, P216 Engines, silver

This gasket set gives your engine strong, clean support. Every piece is made with metal clad parts for long life.

It fits Onan P220, P218, and P216 engines. It stops leaks fast. It keeps your head gasket safe.

Lil Red Barn makes quality parts you can trust. This set is not made in China or Taiwan. It helps your engine run smooth and steady.

Pros	Cons
Durable metal clad ensures long-lasting performance. Prevents gasket blowouts, saving time and money. Not made in China/Taiwan, guarantees quality craftsmanship. Trusted Lil Red Barn brand for reliable engine repairs.	No engine oil seals included, extra purchase needed. Silver color may not match all engines. Not OEM, reproduction part only.

Perfect For:

This Lil Red Barn Gasket Set is perfect for anyone who needs reliable, high-quality parts to repair their Onan P220, P218, or P216 engine. It’s ideal for those who want durable metal-clad materials, not cheap fiber, to prevent head gasket blowouts and keep their engine running smoothly.

Ready to Purchase?

View Price on Amazon (paid link)

8. Lil Red Barn Onan B43 B48 BF BG Overhaul Kit + Valves Pistons Gaskets 3.250

This overhaul kit gives your Onan B, BF, or BG engine a fresh start. You get pistons, valves, seals, and gaskets made to exact specs.

Every part fits the 3.250″ standard bore used in these engines. The valves match only B/BF/BG models, so you get the right fit every time.

The kit is complete. The parts are precise. The quality is proven.

Pros	Cons
Complete kit for Onan B/BF/BG engines, saves time and money. Standard bore pistons, valves, and gaskets included, all in one. Fits multiple Onan engine variants, widely compatible. Manufactured by Lil Red Barn, quality and reliability assured.	Not for P-series engines, valves won’t fit. Specific to B/BF/BG series, check your engine type first. No tools included, you’ll need your own for installation.

Perfect For:

This kit is perfect for anyone who wants to keep their Onan B/BF/BG engine running strong with parts that fit right and last long. It’s great for owners who want a simple, complete, and ready-to-install overhaul kit.

Ready to Purchase?

View Price on Amazon (paid link)

9. 110-3181 Valve Grind Head Gasket Kit Fits for ONAN 110-3181 for Onan BF B43 B48 P220 P218 P216 Engine

This gasket kit keeps your engine running smooth. It fits the ONAN BF, B43, B48, P216, P218, and P220 models with ease.

It has the 110-3181 part number. It comes as a full set shown in the main picture. It is made to fit your engine exactly.

Check your model number before you buy. The kit is simple to use. If you need help, we reply fast.

Pros	Cons
Perfect fit for ONAN BF, B43, B48, P216, P218, P220 engines. Complete gasket kit for valve grind head repairs. Easy to verify compatibility with your equipment. Quick support for any questions or concerns.	Limited compatibility with other engine models. No tools or instructions included in the kit. Requires careful verification of model number before purchase.

Perfect For:

This kit is perfect for engine owners who want fast, simple fixes for their ONAN BF, B43, B48, P216, P218, or P220 engines. It works great for anyone who needs a reliable gasket kit to keep their machine running smooth.

Ready to Purchase?

View Price on Amazon (paid link)

10. Tuzliufi Oil Pan Bottom Rebuild Gasket Set Kit Seal Rings Compatible with Onan BF B43M B43G B48M B48G B48E P216 P218 P220 Engines 5308037 5308036 Z455

Tuzliufi Oil Pan Bottom Rebuild Gasket Set Kit Seal Rings Compatible with Onan BF B43M B43G B48M B48G B48E P216 P218 P220 Engines 5308037 5308036 Z455

The Tuzliufi Oil Pan Bottom Rebuild Gasket Set Kit is a replacement part for specific engines. It includes 5 items, as shown in the main picture. This kit is compatible with Onan engines.

It works with BF B43M, B43G, B48M, B48G, B48E, and B43-48 engines. It also fits P216, P218, and P220 engines. The kit includes seal rings for these models.

This is a non-OEM part, so check the images before buying. Make sure the pictures match what you need, even if your model is listed. Avoid purchasing if the images don’t match.

Pros	Cons
Fits many engines, works with BF, B43-48, P216-220. Includes 5 items, everything you see in the picture. Matches oil seals, compatible with 5308037 and 5308036. Clear images help you confirm the right fit easily.	Not OEM, may not match all setups Must check images closely before buying Limited to specific engines only

Perfect For:

This product is perfect for engine owners who want a simple, reliable fix for worn oil pan seals. It suits anyone who needs a quick, clear replacement kit that matches their Onan engines with no guesswork.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Best Onan Engine Gasket Sets: A Comprehensive Buying Guide

When it comes to maintaining your Onan engine, choosing the right gasket set is crucial for ensuring optimal performance and longevity. Here’s a detailed guide to help you make an informed decision:

1. Identify Your Engine Model:
Onan engines come in various models, including BF, B43, B48, P216, P218, and P220. Ensure the gasket set you choose is compatible with your specific model. Check the part number and images carefully to avoid mismatches.

2. Consider the Kit’s Components:
Look for kits that include valve grind head gaskets, oil pan rebuilds, seal rings, and crankshaft seals. These components are essential for a tight seal, noise reduction, and dust protection.

3. Check Material Quality:
Opt for durable fiber or metal-clad gaskets for long-lasting performance. High-quality materials ensure a tight fit and prevent leaks.

4. Verify Compatibility:
Ensure the kit is compatible with your engine’s bore size and piston type. Kits like the 110-3181 and 168-0187 are designed for specific models, so double-check before purchasing.

5. Look for Complete Sets:
Choose kits that come with all necessary parts, including piston rings, valve seals, and crankshaft gaskets. Complete sets save time and ensure a perfect fit.

6. Read Reviews and Ratings:
Check customer reviews for insights into performance, durability, and ease of installation. Look for kits with high ratings and positive feedback.

7. Compare Prices:
While quality is key, compare prices to ensure you’re getting the best value. Avoid overly cheap kits that may compromise on quality.

8. Check for Non-OEM Options:
If you’re considering non-OEM kits, ensure they meet OEM standards and are proven to work with your engine model.

By following these steps, you’ll find the perfect gasket set for your Onan engine, ensuring smooth operation and extended life.