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JAMES GASKETS
SKU: 681-4448
James Gaskets Evo Sportster Rocker Box Assembly Gasket - Base RCM - Harley Evo Sportster
$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.
Ensure a leak-free top end on your Evo Sportster with this James Gaskets rocker box assembly base gasket. Engineered with advanced materials and manufacturing, it delivers reliable oil sealing for your V-twin.
Why riders pick this
- Made in the U.S.A. with advanced gasket materials
- Direct OEM replacement for Evo Sportster rocker boxes
- Engineered for reliable and long-lasting oil sealing
- Trusted by Harley and Indian riders for quality
A proper seal on the rocker box is critical for maintaining engine integrity and preventing messy oil leaks. This James Gaskets Evo Sportster rocker box base gasket is proudly made in the U.S.A., utilizing state-of-the-art materials and production methods. It's a trusted OEM replacement, designed to provide a durable and effective seal for your Harley-Davidson Evo Sportster engine.
Premium Sealing for Your Evo Sportster
- Made in the U.S.A. with advanced materials
- Direct OEM replacement for Evo Sportster rocker boxes
- Ensures reliable oil sealing for engine longevity
Maintain Your V-Twin with Confidence
Rocker box gaskets can degrade over time, leading to leaks that compromise your engine's cleanliness and performance. Replacing them with a high-quality component like this James Gaskets base gasket is essential for any top-end service or rebuild. Trust in a product designed for the specific demands of your Evo Sportster, helping you keep your ride running strong and dry.
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 16779-99-X
- Length: 8.35 in
- Width: 7 in
- Height: 0.6 in
- Weight: 0.166 lbs
Common questions
What engine does this gasket fit?
This rocker box assembly gasket is specifically designed to fit Evo Sportster V-twin engines. Please confirm your engine type before ordering.
Is this an OEM Harley-Davidson part?
No, this is a premium OEM-specification replacement gasket from James Gaskets, a brand highly trusted by Harley and Indian riders for quality and reliability.
When should I replace my rocker box gasket?
You should replace your rocker box gasket if you notice oil seepage or leaks from the rocker box area, or as part of any routine top-end engine maintenance or rebuild.
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.
| BRAND | James Gaskets |
| TYPE | Gaskets/Seals |
| SKU | 681-4448 |
| WEIGHT | 0.17 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.9
30 RATINGS
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✓ VERIFIED
Nov 27, 2023
Cork gasket
Exactly what I ordered and needed.
✓ VERIFIED
Jun 6, 2022
Great product
✓ VERIFIED
May 16, 2022
Perfect fit
✓ VERIFIED
Feb 4, 2022
Gasket arrived in great shape-no twists or bends. I was able to lay into place easily and install the rocker cover without pinching the gasket. Good stuff!
✓ VERIFIED
Dec 22, 2021
ok
