JAMES GASKETS SKU: 681-4120

James Gaskets Twin Cam Tappet Cover Gasket - Harley Twin Cam

$15.95
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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.

These James Gaskets tappet cover gaskets are engineered for a precise fit on Harley-Davidson Twin Cam engines. Designed to seal both front and rear tappet covers, they are an essential component for any engine service or rebuild.

Why riders pick this

  • Designed for front and rear Twin Cam tappet covers
  • Made in the USA with state-of-the-art materials
  • Ensures a reliable, leak-free seal for your V-twin
  • Trusted quality for Harley-Davidson Twin Cam engines

When you're wrenching on your Twin Cam, a reliable seal for your tappet covers is non-negotiable. These gaskets from James Gaskets are made in the USA with robust materials and manufacturing processes, ensuring a leak-free seal that stands up to the demands of your V-twin.

Precision Sealing for Your Twin Cam

  • Specifically designed for Twin Cam tappet covers
  • Engineered for both front and rear applications
  • Manufactured in the USA with high-quality materials
  • Trusted by V-twin builders for leak-free performance

Maintain Peak Engine Integrity

Whether you're performing routine maintenance or a full engine overhaul, using fresh, high-quality gaskets is crucial. These James Gaskets provide the peace of mind that comes with a proper seal, helping to maintain oil pressure and prevent leaks that can compromise engine performance. Don't cut corners on critical engine components – choose gaskets built for the long haul on your Harley-Davidson Touring, Softail, or Dyna.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 18635-99-F
  • Length: 3.85 in
  • Width: 8.1 in
  • Height: 0.1 in
  • Weight: 0.029 lbs

Common questions

Will this gasket fit my Milwaukee-Eight engine?

No, this gasket is specifically designed for Twin Cam engines only. Milwaukee-Eight (M8) models require a different part number for tappet cover gaskets.

Is this gasket suitable for both front and rear tappet covers?

Yes, this James Gaskets part is designed to work on both the front and rear tappet covers of Twin Cam V-twin engines.

Are James Gaskets products made in the USA?

Yes, James Gaskets manufactures these tappet cover gaskets in the USA using advanced materials and production methods.

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
SKU681-4120
WEIGHT0.03 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
8 RATINGS
5★ 8
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Oct 10, 2022

Great product

— Anonymous
✓ VERIFIED
Oct 10, 2022

Great products. Fast shipping.

— Anonymous
✓ VERIFIED
May 23, 2022

Higher quality than OEM. No oil leaks here.

— Anonymous
✓ VERIFIED
Jul 13, 2021

Didn't use them took to long to be delivered<br /> Bought another set from dealer which ironically was cheaper

— Anonymous
✓ VERIFIED
May 26, 2020

Great product, great service.

— Anonymous
✓ VERIFIED
Apr 14, 2020

5 Stars

— Anonymous