JAMES GASKETS SKU: 681-4387

James Gaskets Big Twin Top End with Rubber Rocker Gaskets Kit - Harley Evolution

$100.95
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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.

For EVO engine owners looking to refresh their top end, this James Gaskets Big Twin gasket kit offers a complete sealing solution. It includes all seals necessary for a full top-end replacement, prominently featuring durable rubber rocker box gaskets. This kit is designed as a direct OEM-specification replacement for cylinder head, rocker covers, and related components, ensuring a reliable, leak-free seal.

Why riders pick this

  • Complete top-end gasket set for EVO Big Twin
  • Features durable rubber rocker box gaskets
  • Direct OEM replacement specification
  • All seals for cylinder head and rocker covers
  • Ensures a leak-free top end

This James Gaskets Big Twin top-end gasket kit is specifically engineered for Harley-Davidson EVO Big Twin engines, providing a comprehensive set of seals for a complete top-end overhaul. The kit includes high-quality rubber rocker box gaskets, vital for maintaining a tight seal and preventing oil leaks from this common trouble spot. Every component meets direct OEM replacement specifications, ensuring compatibility and reliable performance for your Evolution V-twin.

Reliable Rubber Rocker Box Sealing

  • Complete top-end gasket set for EVO Big Twin engines
  • Includes durable rubber rocker box gaskets for superior sealing
  • Direct OEM replacement specification for a perfect fit
  • All seals needed for cylinder head and rocker cover components

Essential for EVO Top-End Longevity

Ensuring a perfectly sealed top end is crucial for the longevity and performance of your EVO Big Twin. This James Gaskets kit, with its robust rubber rocker box gaskets, provides the confidence that your engine will be sealed effectively. It's an ideal choice for riders performing routine maintenance, addressing leaks, or completing a full top-end rebuild. Always refer to your service manual for proper installation procedures to achieve the best results.

Specifications

  • Brand: James Gaskets
  • Manufacturer Part #: 17033-83-A
  • Length: 7.55 in
  • Width: 9.25 in
  • Height: 1.4 in
  • Weight: 0.707 lbs

Common questions

Will this gasket kit fit my Twin Cam or Milwaukee-Eight engine?

No, this James Gaskets kit is specifically designed for EVO Big Twin engines. Twin Cam and Milwaukee-Eight powerplants require different gasket sets. Please confirm your engine type with Shop by Bike.

What specific gaskets are included in this kit?

This kit includes a cylinder head gasket, all rocker cover gaskets (featuring rubber material), and all other related top-end seals necessary for an EVO Big Twin rebuild.

Is this an OEM replacement kit?

Yes, James Gaskets manufactures this kit to OEM specifications, making it a direct replacement for the factory EVO gaskets, ensuring proper fit and function.

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
SKU681-4387
WEIGHT0.71 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.7
30 RATINGS
5★ 26
4★ 1
3★ 1
2★ 2
1★ 0
✓ VERIFIED
Feb 2, 2023

Great parts. Fast delivery.

— Anonymous
✓ VERIFIED
May 5, 2024

Has everything I needed. James gaskets always seal up great. Used no gasket sealers.

— Kevin K
✓ VERIFIED
Nov 28, 2022

Nice Set of Gaskets

— Anonymous
✓ VERIFIED
Nov 15, 2022

have used james gaskets for years,as usual no problems

— Anonymous
✓ VERIFIED
Aug 3, 2022

James gaskets never miss. Order now.

— Anonymous
✓ VERIFIED
Mar 15, 2022

Very good quality. Works great.

— Anonymous