✓ VERIFIED
Apr 10, 2026
Minor incident
Good gasket for the price, fit fine with easy install.
COMETIC
SKU: 68-9363
Cometic Evo Big Twin Inspection/Derby Cover Gasket - Bolt Washer 5/PK Oe#31433-…
$8.48
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Cometic Evo Big Twin inspection/derby cover gasket with bolt washer in a 5-pack, designed for V-twin engines. Direct replacement for OEM Harley-Davidson Evo Big Twin cover gaskets to prevent oil seepage.
Features
- 5-pack quantity
- Bolt washer included
- Direct OEM replacement specification
Specifications
- Brand: Cometic
- Manufacturer Part #: C9363
- Quantity: 5 per pack
- Weight: 4.95 lbs
Fitment
Fits Harley-Davidson Evo Big Twin models with inspection and derby covers.
Frequently Asked Questions
How many gaskets are in a pack?
Five complete gaskets with bolt washers — enough for multiple covers or to keep spares on hand.
Will this fit my Twin Cam or Milwaukee-Eight?
No — this gasket is specific to Evo Big Twin engines. Twin Cam and M8 engines require different part numbers.
Do I need to replace these gaskets if I remove the derby cover?
Yes. Cometic recommends replacing gaskets when covers are removed to ensure a proper seal and prevent oil leaks.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9363 |
| WEIGHT | 4.95 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.78
18 RATINGS
5★
15
4★
2
3★
1
2★
0
1★
0
✓ VERIFIED
May 24, 2024
It works
Good gasket . Probably could have reused mine , but replaced it for peace of mind .
✓ VERIFIED
Mar 30, 2022
Looks just like the HD gasket, good price
✓ VERIFIED
Aug 12, 2020
you'd think that a trans rebuild kit would have had one of these in it. oh well
✓ VERIFIED
Jun 17, 2020
everything I expected
✓ VERIFIED
Apr 28, 2020
It sealed the inspection cover!
