JAMES GASKETS SKU: 681-4626

James Gaskets Big Twin Primary Housing Gasket - Harley Big Twin

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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.

Achieve a reliable seal for your Big Twin primary cover with this James Gaskets primary housing gasket. Made in the U.S.A. to OEM specifications, this gasket ensures dependable oil containment and contributes to the longevity of your engine. It's an essential component for any primary service.

Why riders pick this

  • OEM-specification gasket for Big Twin primary covers
  • Made in the U.S.A. by James Gaskets for quality assurance
  • Prevents oil leaks from the primary chain compartment
  • Ideal for routine maintenance or primary drive rebuilds

When performing maintenance on your Harley-Davidson or Indian Motorcycle Big Twin, a high-quality primary housing gasket is crucial for preventing leaks and maintaining a clean engine. This James Gaskets component is precisely manufactured in the U.S.A. to OEM specifications, ensuring a perfect fit and a robust seal between your primary cover and engine case. This attention to detail means you can ride with confidence, knowing your primary drive is protected.

Reliable Sealing for Your Primary Cover

  • Engineered to OEM specifications for a direct fit and reliable seal
  • Manufactured in the U.S.A. by James Gaskets for assured quality
  • Effectively seals the primary cover to prevent oil leakage
  • Contributes to a cleaner engine and extended component life

Essential for Primary Drive Maintenance

Replacing the primary housing gasket is a standard procedure during clutch service or any primary drive work. This James Gaskets component provides the peace of mind that comes with using a high-quality, U.S.-made part. It's a vital element in ensuring your V-twin's primary chain compartment remains sealed, protecting against oil loss and external contaminants for both Harley-Davidson Touring and FXR models.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 31433-84
  • Weight: 0.015 lbs

Common questions

What is the purpose of this primary housing gasket?

This gasket creates a seal between the primary cover and the engine case, preventing oil from leaking out of the primary chain compartment on Big Twin models.

Is this a genuine Harley-Davidson OEM part?

This is a genuine James Gaskets replacement part, manufactured to meet or exceed OEM specifications for Harley-Davidson and Indian Motorcycle V-twins.

Do I need special tools for installation?

Basic hand tools are generally sufficient for removing the old gasket and installing this new one. Ensure mating surfaces are clean for a proper seal.

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
SKU681-4626
WEIGHT0.02 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.79
24 RATINGS
5★ 20
4★ 3
3★ 1
2★ 0
1★ 0
✓ VERIFIED
Jan 26, 2023

Quick delivery right gasket s

— Anonymous
✓ VERIFIED
Oct 14, 2021

Great product! Fast delivery!

— Anonymous
✓ VERIFIED
Sep 10, 2021

Great design! No O ring to forget and good seal on base.

— Anonymous
✓ VERIFIED
Feb 4, 2021

Great! No leaks.

— Anonymous
✓ VERIFIED
Jun 9, 2020

I didn't think the base gaskets would be paper. Everything else was great

— Anonymous
✓ VERIFIED
May 12, 2020

purfect

— Anonymous