✓ VERIFIED
Mar 8, 2021
Better gaskets than oem never had a leak on any bike I've put them on!
JAMES GASKETS
SKU: 681-4621
James Gaskets Big Twin Primary Housing Gasket - Oring Derby Cover Softail Dyna… — Harley-Davidson (1984-1992)
$34.95
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James Gaskets big twin primary housing gasket with O-ring derby cover seal for Harley-Davidson Softail and Dyna models. Made in the U.S.A. using state-of-the-art materials and production methods for reliable engine sealing.
Features
- Made in the U.S.A.
- State-of-the-art gasket materials and production
- O-ring derby cover design
- Direct replacement for primary housing
Specifications
- Brand: James Gaskets
- Manufacturer Part #: 25416-84
- Length: 6.85 in
- Width: 7.8 in
- Height: 0.5 in
- Weight: 0.152 lbs
Fitment
Fits Harley-Davidson Softail and Dyna big twin models with primary housings using O-ring derby covers.
Frequently Asked Questions
Will this fit my Sportster?
No — this gasket is for big twin primary housings only. Sportster models use a different part number.
Is this a direct replacement for the OEM gasket?
Yes. This James Gaskets part replaces the factory primary housing gasket without modification.
What's included in the box?
One primary housing gasket with O-ring derby cover seal. Installation hardware is not included.
Do I need to use any special sealant with this gasket?
Check your service manual — some installations benefit from a thin layer of gasket maker, while others rely on the gasket alone.
| BRAND | James Gaskets |
| TYPE | Gaskets/Seals |
| SKU | 681-4621 |
| WEIGHT | 0.15 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.86
28 RATINGS
5★
24
4★
4
3★
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2★
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1★
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✓ VERIFIED
Oct 9, 2023
No surprise
Perfect. Exactly what i expected.
✓ VERIFIED
Jan 18, 2023
Very good kit everything you need for topend build
✓ VERIFIED
Oct 18, 2022
Perfect fit
✓ VERIFIED
Mar 5, 2022
looks like all the gaskets i need to rebuild my top end are in the kit right now im tearing down and prepping
✓ VERIFIED
Feb 1, 2022
First time doing top end rebuild. Pleased with the quality- everything was there so hopefully they do what they are supposed to. Pleased with the purchase.
