James Gaskets Cylinder Head & Base Gasket Kit - Harley Big Twin
About James Gaskets
James Gaskets has supplied American V-twin gaskets, seals and O-rings for decades and is one of the most widely stocked names for Harley-Davidson engine, primary and transmission rebuilds. When a service manual calls for a specific gasket, James almost always has an exact-fit answer.
This James Gaskets Big Twin cylinder head and base gasket kit provides OEM-specification seals for a complete top-end refresh on your V-twin motorcycle. It's the full gasket set you need when rebuilding or servicing the cylinder head and crankcase interface.
Why riders pick this
- OEM-specification cylinder head gaskets
- Includes base gaskets for cylinder-to-crankcase seal
- Complete set for V-twin top-end refresh
- Reliable seals for engine performance
- Designed for Harley Big Twin motorcycles
Ensuring a proper seal between your cylinders, cylinder heads, and crankcase is paramount for engine performance and longevity. This James Gaskets kit delivers precisely that, offering high-quality, OEM-specification seals that you can trust. Whether you're addressing a leak or performing a comprehensive top-end rebuild, this kit provides the essential components for a secure and reliable assembly.
Essential Sealing for Top-End Service
- Includes cylinder head gaskets for a tight seal
- Provides base gaskets for the cylinder-to-crankcase interface
- Manufactured to OEM specifications for dependable fit and function
- Comprehensive set for top-end refresh on V-twin engines
Reliable Components for Your Big Twin
Don't compromise on critical engine seals. This James Gaskets kit offers a straightforward solution for your Big Twin's top-end needs. Using OEM-spec gaskets helps prevent common issues like oil leaks and compression loss, ensuring your engine runs as intended. Always confirm fitment for your specific V-twin model and year to guarantee compatibility.
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 16770-84-A
- Length: 6.95 in
- Width: 9.2 in
- Height: 0.3 in
- Weight: 0.159 lbs
Common questions
What gaskets are included in this kit?
This kit includes the cylinder head gasket and the crankcase base gasket – everything needed for a complete top-end seal between the cylinders, heads, and crankcase.
Is this the correct set for my bike?
This kit fits V-twin motorcycles. To ensure correct fitment, please check your owner's manual or parts diagram to confirm that part number 16770-84-A matches your engine before ordering.
Do I need any other gaskets for a top-end rebuild?
This set covers the cylinder head-to-block and crankcase-to-block interfaces. Depending on the full scope of your rebuild, you may need additional gaskets for other engine components such as rocker covers.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | James Gaskets |
| TYPE | Gaskets/Seals |
| SKU | 681-4391 |
| WEIGHT | 0.16 lb |
