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James Gaskets Sportster Gasket Kit - Seal Valve Stem IN/EX Early XL KIT 18000-5…
JAMES GASKETS SKU: 681-5508

James Gaskets Valve Stem Inlet/Exhaust Seal Kit - Harley Sportster

4.81 (27 Reviews)| Write a Review
$11.50
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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.

Restore proper valve sealing in your V-twin engine with this James Gaskets valve stem inlet and exhaust seal kit. Manufactured in the U.S.A. using state-of-the-art materials, these seals are crucial for preventing oil consumption and maintaining optimal engine performance. This kit provides reliable sealing for your Sportster-style valve stems.

Why riders pick this

  • Inlet and exhaust valve stem seals included
  • Made in the U.S.A. for superior quality
  • Utilizes state-of-the-art gasket materials
  • Reliable sealing for Sportster-style valve stems
  • Helps prevent oil consumption and improve engine health

Worn valve stem seals can lead to excessive oil consumption and smoking, impacting your V-twin's performance and emissions. This James Gaskets kit offers a precise solution, providing new inlet and exhaust valve stem seals crafted with modern production methods. Designed for Sportster-style valve stems, these U.S.-made seals ensure a tight fit and long-lasting durability, helping your engine run cleaner and more efficiently.

Optimize Valve Train Performance

  • Includes valve stem inlet and exhaust seals
  • Manufactured in the U.S.A. with advanced materials
  • Designed for reliable engine sealing in Sportster-style V-twins
  • Helps prevent oil burning and excessive smoke
  • Crucial for maintaining engine compression and efficiency

Essential for Top-End Rebuilds

When you're tackling a top-end rebuild or cylinder head service on your Harley Sportster, replacing the valve stem seals is a non-negotiable step. This James Gaskets kit provides the high-quality components you need to ensure a professional and lasting repair. Combine these seals with other James Gaskets products for a complete and confident engine refresh, getting your V-twin back to peak condition.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 18000-57-K
  • Length: 4.25 in
  • Width: 3.65 in
  • Height: 0.85 in
  • Weight: 0.055 lbs

Common questions

What types of seals are included in this kit?

This kit contains valve stem inlet and exhaust seals, designed for compatible V-twin engines using Sportster-style valve stem seals.

Is this kit manufactured in the U.S.A.?

Yes, James Gaskets produces this kit in the U.S.A. using state-of-the-art materials and production methods for consistent quality.

Will these seals fit my specific Harley Sportster model?

This kit is designed for V-twin engines using Sportster-style valve stem seals. We recommend using our Shop by Bike tool to confirm exact compatibility for your year and model before ordering.

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
SKU681-5508
WEIGHT0.06 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.81
27 RATINGS
5★ 23
4★ 3
3★ 1
2★ 0
1★ 0
✓ VERIFIED
Jan 24, 2024

INVENTORY THE KIT AS SOON AS YOU GET IT

Open your gasket set as soon as you get it and check it closely. I ordered one a couple of years ago (military requirements had me put the bike in storage) and it has been sitting unopened until today. Now that I'm ready to get this engine put back together I opened it up and it should have had two primary cover gaskets due to changes in the 1977 and up primary. The kit only had one, and naturally it was for the older models and mine is a '77. Now I have to order a primary cover gasket and the cheap paper ones start at $25 + shipping. I don't care for cheap paper. Not enough to break the bank...I just wish I had opened it up as soon as I bought it. I guess it was my fault for trusting James to have everything in there.

— Rodger D
✓ VERIFIED
Jan 31, 2022

Good priced great quality. Everything for complete engine rebuild. Quick delivery to Australia. Highly recommend.

— Anonymous
✓ VERIFIED
Nov 2, 2020

Everything I need in one kit

— Anonymous
✓ VERIFIED
Oct 13, 2020

good quality gasket set.

— Anonymous
✓ VERIFIED
Jul 22, 2020

Well packaged kit and seems to have everything I need.

— Anonymous
✓ VERIFIED
Jun 16, 2020

Everything arrived quickly!

— Anonymous