JAMES GASKETS SKU: 681-4634

James Gaskets Starter Shaft Primary Housing Gasket - Harley FLT & FXR Big Twin

$139.000,00
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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.

Protect your V-twin from oil leaks with the James Gaskets starter shaft primary housing gasket. This OEM-quality gasket is specifically made to seal the starter shaft area on FLT and FXR Big Twin engines. Crafted in the U.S.A., it offers reliable oil containment for your primary case.

Why riders pick this

  • Seals starter shaft area on primary housing
  • OEM-equivalent gasket compound for reliability
  • Made in the U.S.A. for quality assurance
  • Designed for FLT and FXR Big Twin engines

A leaking primary can be a real headache, and the starter shaft opening is a common culprit. This James Gaskets primary housing gasket is precision-engineered for Harley-Davidson FLT and FXR Big Twin models, ensuring a tight seal where it matters most. Its U.S.-made construction and OEM-equivalent gasket compound mean you can trust it for long-lasting performance and a clean ride.

Reliable Sealing for Big Twin Engines

  • Made in the U.S.A. for superior quality control
  • OEM-equivalent gasket compound ensures reliable oil containment
  • Specifically designed for Big Twin primary housings
  • Seals the starter shaft area to prevent leaks

Installation Best Practices

When replacing any primary gasket, proper installation is key to preventing future leaks. This James Gaskets component is designed for a straightforward replacement. Always ensure the mating surfaces are clean and free of old gasket material. Consult your Harley-Davidson service manual for the correct torque specifications for your primary case to achieve an optimal and durable seal.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 12053
  • Weight: 0.13 lbs
  • Country of Origin: USA

Common questions

What does this gasket specifically seal?

It seals the starter shaft area on the primary housing to prevent oil leakage from the primary case on your Big Twin engine.

Is this an OEM Harley part?

No, James Gaskets manufactures this as an OEM-equivalent replacement. It's made to Harley specifications but is an aftermarket component.

Will this fit Sportster models?

No, this gasket is specifically for Big Twin engines. Sportster models use a different primary housing gasket, so please check fitment for your bike.

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
SKU681-4634
WEIGHT0.13 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