James Gaskets Big Twin Rocker Box Assembly Fibre Washers 25-Pack - Harley & Indian V-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.
Ensure a leak-free rocker box assembly on your V-twin with James Gaskets fibre washers. These OEM-grade washers are made in the U.S.A. and designed to seal fasteners on Harley and Indian Big Twin engines.
Why riders pick this
- Effective fibre construction for sealing rocker box fasteners
- OEM-specification quality for dependable performance
- Proudly made in the U.S.A
- Convenient 25-pack for multiple services or spares
- Helps prevent oil leaks around fastener points
When reassembling your Big Twin rocker boxes, proper sealing at every point is crucial. These James Gaskets fibre washers are engineered to sit under the rocker box fasteners, providing a reliable seal that prevents oil leaks. Manufactured in the U.S.A. with OEM-grade materials, they deliver the quality and performance demanded by serious Harley and Indian riders.
Secure Your Rocker Box Fasteners
- Durable fibre construction for effective sealing
- OEM-specification washer for reliable performance
- Made in the U.S.A. with quality materials
- Supplied in a convenient 25-pack for multiple uses
Essential for Rebuilds and Maintenance
Don't overlook the small details that make a big difference in engine integrity. These fibre washers are an essential component for any top-end service, cam swap, or full engine rebuild on a Big Twin. The 25-pack quantity is perfect for shops, multi-bike owners, or those who prefer to keep a supply of critical spares on hand, ensuring you're always prepared for the job.
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 63858-49
- Quantity: 25 per pack
- Length: 1.4 in
- Width: 4.05 in
- Height: 0.65 in
- Weight: 0.018 lbs
Common questions
What are these washers used for?
These fibre washers are designed to seal the fastener holes on Big Twin rocker box assemblies, preventing oil leaks around the bolts during engine assembly or rebuilds.
Will these washers fit my Sportster?
No, these washers are specifically designed for Big Twin engines and are not compatible with Sportster models, which typically use different rocker box hardware.
Why are these washers sold in a 25-pack?
The 25-pack quantity is ideal for professional shops, multi-bike owners, or riders who frequently work on their engines and prefer to keep an ample supply of spare parts.
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 | 681-4450 |
| WEIGHT | 0.02 lb |
