JAMES GASKETS SKU: 681-4266

James Gaskets Foam Derby Cover Gasket - Harley Twin Cam

$72.95
Free shipping on orders $99+ · Best value guarantee
From $6.07/mo with Affirm. See if you prequalify
IN STOCK — Ships within 24 hours
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returnssee policy
Authorized Dealer — sourced direct
NOT SURE ABOUT FITMENT?

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 Twin Cam primary housing gasket is engineered to seal the derby cover on your Twin Cam engine. Made in the USA, it utilizes modern gasket materials for a reliable, long-lasting seal. This gasket is designed to resist fuel and oil degradation, ensuring durability.

Why riders pick this

  • Seals the derby cover on Twin Cam primary housings
  • Manufactured in the USA for consistent quality
  • Advanced materials resist fuel and oil degradation
  • Provides a reliable, long-lasting seal
  • Essential for routine primary maintenance

A leaking derby cover is a common annoyance for Twin Cam riders, but a quality gasket can solve the problem. This foam derby cover gasket from James Gaskets provides a precise fit and superior sealing for your Twin Cam primary housing. It's an essential item for routine maintenance, especially when checking or changing primary fluid.

Premium Sealing Technology

  • Made in the USA by James Gaskets
  • Utilizes state-of-the-art gasket materials
  • Designed for reliable, long-lasting performance
  • Resists degradation from primary fluids

Simple Installation, Lasting Results

Replacing your derby cover gasket is a straightforward task that can prevent costly leaks and keep your primary system clean. This James Gaskets foam gasket offers a direct replacement, making installation quick and easy. Ensure the mating surfaces are clean before installing for the best possible seal on your Harley-Davidson Twin Cam.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 25416-99-F
  • Length: 7.9 in
  • Width: 7.9 in
  • Height: 0.55 in
  • Weight: 0.15 lbs

Common questions

What part of the primary does this gasket seal?

This James Gaskets product is a derby cover gasket, designed to seal the outer inspection cover on your Twin Cam primary housing to prevent oil leaks.

Is this gasket easy to install?

Yes, this is a straightforward replacement gasket. You simply remove the derby cover, clean the old gasket material, and install the new gasket before reattaching the cover.

Will this fit my Twin Cam Harley?

Yes, this gasket is specifically designed for Twin Cam engines found in Harley-Davidson motorcycles. Please use our Shop by Bike tool to confirm fitment for your exact year and model.

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.
BRANDJames Gaskets
TYPEGaskets/Seals
SKU681-4266
WEIGHT0.15 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
14 RATINGS
5★ 14
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Oct 1, 2023

Excellent set

Excellent set for the price, easy to install, very durable products. I would recommend this set 10/10

— Eric S
✓ VERIFIED
Sep 11, 2023

Good quality

Breaking engine in right now and everything is holding tight. Very pleased

— Hawk R
✓ VERIFIED
Aug 28, 2023

Gasket set

Great gasket set, includes everything you need to reseal top end.

— James N
✓ VERIFIED
Jul 31, 2021

Quality parts in a timely manner

— Anonymous
✓ VERIFIED
Mar 29, 2021

Fit like it should, super quick shipping

— Anonymous
✓ VERIFIED
Mar 21, 2021

Gasket set seems to be of good quality. Everything fit just like oem gaskets and seals but made better lol. So far so good, Everything is nice a dry now.

— Anonymous