JAMES GASKETS SKU: 681-4465

James Gaskets Panhead/Shovelhead Rear Tappet Block Gasket Foam 5-Pack - Harley-Davidson

$38.95
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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.

Achieve a dependable, leak-free seal on your Panhead or Shovelhead's rear tappet block with this James Gaskets foam gasket. Engineered for the specific demands of vintage V-twins, its foam construction offers superior flexibility and sealing compared to traditional materials. This 5-pack ensures you have the necessary components for your restoration or maintenance work.

Why riders pick this

  • Foam material for enhanced sealing on older engines
  • Specific fit for Panhead and Shovelhead rear tappet blocks
  • 5-pack quantity for multiple projects or spares
  • Made in the U.S.A. for assured quality
  • Prevents oil leaks and maintains engine integrity

When working on a classic Harley-Davidson Panhead or Shovelhead, using the right components is key to a successful, leak-free build. The James Gaskets rear tappet block gasket is crafted from foam, which excels at conforming to the aged and sometimes irregular surfaces of vintage engine components. Manufactured in the U.S.A., these gaskets provide a critical seal for your V-twin's valve train, helping to preserve its originality and performance.

Superior Sealing for Vintage V-Twins

  • Foam construction provides excellent sealing on older engine surfaces
  • Specifically designed for Panhead and Shovelhead rear tappet blocks
  • Offers improved conformity and durability over cork gaskets
  • Convenient 5-pack for shops, rebuilders, or spares
  • Made in the U.S.A. for reliable quality

Essential for Panhead and Shovelhead Engine Integrity

Ensuring every seal is perfect is vital for any engine, especially for classic Harley-Davidson models. This 5-pack of rear foam tappet block gaskets from James Gaskets provides the quality and quantity needed for comprehensive engine work. Keep your Panhead or Shovelhead running strong and dry, minimizing common issues associated with aging seals. Note that this gasket is not compatible with modern Twin Cam or Milwaukee-Eight engines.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 18633-48-F
  • Quantity: 5 per pack
  • Length: 3 in
  • Width: 4.1 in
  • Height: 0.6 in
  • Weight: 0.03 lbs

Common questions

Is this gasket for the front or rear tappet block?

This is the rear tappet block gasket. If you need the front gasket, it must be ordered separately.

Will this fit modern engines like Milwaukee-Eight or Twin Cam?

No, this gasket is exclusively designed for Panhead and Shovelhead engines and is not compatible with newer Harley-Davidson platforms.

What is the advantage of a foam gasket for older engines?

Foam gaskets are excellent for older engines because they conform better to surface irregularities than paper or cork, creating a more effective and lasting 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
SKU681-4465
WEIGHT0.03 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
2 RATINGS
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✓ VERIFIED
Jul 2, 2021

Quality and price as expected.

— Anonymous
✓ VERIFIED
Apr 3, 2019

works great

— Anonymous