James Gaskets Shovelhead 3 5/8" Big Bore Top End Gasket Kit - Harley Shovelhead
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.
When you're running a big-bore Shovelhead, you need gaskets that can handle the heat and pressure. This James Gaskets top-end kit is purpose-built for 3 5/8" big-bore Shovel engines, providing a complete sealing solution for your jugs and heads. Made in the USA with precision materials, it ensures your motor stays buttoned up and leak-free.
Why riders pick this
- Designed for 3 5/8" big-bore Shovelhead engines
- Complete kit for cylinder heads, barrels, and rocker covers
- Precision manufactured in the U.S.A
- Ensures reliable, leak-free performance
- Direct replacement for a confident rebuild
When you're running a big-bore Shovelhead, you need gaskets that can handle the heat and pressure. This James Gaskets top-end kit is purpose-built for 3 5/8" big-bore Shovel engines, providing a complete sealing solution for your jugs and heads. Made in the USA with precision materials, it ensures your motor stays buttoned up and leak-free, whether you're rebuilding or just chasing down that last weep.
Reliable Sealing for Performance Builds
- Complete top-end gasket set for big-bore Shovelhead engines
- Engineered for 3 5/8" displacement to ensure proper fitment
- Manufactured in the U.S.A. with high-quality materials for durability
- Designed to seal cylinder heads, barrels, and rocker covers effectively
Keep Your Classic Running Strong
A proper gasket set is critical for the longevity and performance of any engine, especially a modified Shovelhead. This James Gaskets kit takes the guesswork out of your top-end rebuild, providing all the necessary seals in one package. It's an essential component for any rider looking to maintain or upgrade their classic Harley-Davidson, ensuring reliable operation mile after mile.
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 16770-66-S
- Length: 7 in
- Width: 6 in
- Height: 0.45 in
- Weight: 0.166 lbs
Common questions
What components are included in this top-end gasket kit?
This is a complete top-end gasket set specifically for Shovelhead cylinders and heads on big-bore engines. The exact components are listed on the packaging.
Will this gasket kit fit a stock displacement Shovelhead engine?
No, this kit is specifically designed for 3 5/8" big-bore Shovelhead engines. Stock displacement engines typically require a different gasket set.
Is special tooling required for installation?
Installation involves standard engine assembly tools and following your service manual's torque specifications for gasket components. James Gaskets are designed as direct replacements.
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 | 681-4746 |
| WEIGHT | 0.17 lb |
