✓ VERIFIED
Oct 1, 2023
Excellent set
Excellent set for the price, easy to install, very durable products. I would recommend this set 10/10
JAMES GASKETS
SKU: 681-4444
James Gaskets Big Twin Rocker Box Assembly Gasket - Cover Lower Rubber - Harley Big Twin
$63.95
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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.
Address oil leaks on your Big Twin with the James Gaskets rocker box lower cover gasket. This durable rubber gasket provides a crucial seal for the rocker box assembly, preventing unsightly oil weepage.
Why riders pick this
- Reliable rubber construction for dependable sealing
- OEM-style replacement for compatible Big Twin engines
- Specifically designed for the lower rocker box cover
- Helps prevent oil leaks from the engine top end
A dry engine is a happy engine, and a quality lower rocker box gasket is essential for preventing leaks. This James Gaskets offering is an OEM-style replacement, precision-engineered from rubber to seal the lower rocker box cover on compatible Big Twin engines. It’s designed to provide a reliable barrier against oil leaks, ensuring your V-twin runs clean.
Prevent Oil Weepage from Your Big Twin
- Constructed from durable rubber for reliable sealing
- OEM-style replacement for a precise fit
- Seals the lower rocker box cover effectively
Critical for Engine Integrity
Whether you're rebuilding your Big Twin's top end or simply chasing down a persistent oil leak, replacing the lower rocker box gasket is a fundamental step. This James Gaskets component offers the quality and fitment needed to restore the integrity of your engine's sealing surfaces. Always follow your service manual's recommendations for installation and sealant use to achieve the best results.
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 17355-84-A
- Length: 6.7 in
- Width: 10.15 in
- Height: 0.45 in
- Weight: 0.124 lbs
Common questions
Which part of the rocker box does this gasket seal?
This gasket is designed to seal the lower rocker box cover to the cylinder head, preventing oil leaks from that specific area on compatible Big Twin engines.
Is this a direct replacement for the original gasket?
Yes, this James Gaskets part is an OEM-style replacement, meaning it's designed to fit and function like the original equipment gasket without modifications.
Do I need to use gasket sealant with this product?
Always refer to your specific Harley-Davidson service manual for sealant recommendations. Some Big Twin applications may benefit from a thin layer of gasket dressing for optimal sealing.
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 | 681-4444 |
| WEIGHT | 0.12 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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✓ VERIFIED
Sep 11, 2023
Good quality
Breaking engine in right now and everything is holding tight. Very pleased
✓ VERIFIED
Aug 28, 2023
Gasket set
Great gasket set, includes everything you need to reseal top end.
✓ VERIFIED
Jul 31, 2021
Quality parts in a timely manner
✓ VERIFIED
Mar 29, 2021
Fit like it should, super quick shipping
✓ VERIFIED
Mar 21, 2021
Gasket set seems to be of good quality. Everything fit just like oem gaskets and seals but made better lol. So far so good, Everything is nice a dry now.
