JAMES GASKETS SKU: 681-4628

James Gaskets Big Twin Inner Primary Chain Cover Gasket - Harley Big Twin

$34.95
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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.

Prevent oil seepage from your inner primary chain cover with this James Gaskets Big Twin primary housing gasket. Engineered in the U.S.A. with state-of-the-art materials, this gasket provides a dependable seal for your V-twin motorcycle. It's a direct replacement designed for lasting performance.

Why riders pick this

  • Seals inner primary chain cover on Big Twin V-twins
  • Made in the U.S.A. with advanced materials
  • Direct replacement for stock primary housing gaskets
  • Helps prevent oil seepage and maintain a clean engine

Maintaining a leak-free primary is crucial for the performance and cleanliness of your Harley-Davidson or Indian Motorcycle Big Twin. This James Gaskets primary housing gasket is specifically designed to seal the inner primary chain cover, a common point for oil seepage. Manufactured in the U.S.A. using advanced production methods, this gasket ensures a robust and reliable barrier against oil loss, keeping your primary drive operating efficiently.

Secure Seal for Your Inner Primary

  • Specifically engineered to seal the inner primary chain cover
  • Made in the U.S.A. with state-of-the-art gasket materials
  • Genuine James Gaskets quality ensures a precise and lasting fit
  • Helps prevent oil seepage between the primary cover and engine case

Straightforward Installation for Big Twin Owners

Replacing the inner primary chain cover gasket is a straightforward process that yields significant benefits in preventing leaks. This James Gaskets component is designed for direct replacement, making installation manageable for most riders. It's a vital part for ensuring your Softail's primary system remains sealed and protected, enhancing the overall reliability and appearance of your Big Twin V-twin.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 63859-95
  • Weight: 0.035 lbs
  • Country of Origin: United States

Common questions

What part of the primary does this gasket seal?

This gasket is designed to seal the inner primary chain cover housing, preventing oil seepage between the primary cover and the engine case.

Is this an OEM Harley-Davidson part?

This is a high-quality aftermarket gasket manufactured by James Gaskets to OEM specifications, serving as a direct replacement for stock gaskets.

Is the installation process difficult?

Installation is generally straightforward. It involves removing the old gasket, thoroughly cleaning the mating surfaces, installing the new gasket, and reassembling the primary cover.

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
SKU681-4628
WEIGHT0.04 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