✓ VERIFIED
May 10, 2024
No leaks.
Fits my '01 Road King. Doesn't leak.
COMETIC
SKU: 68-9662
Cometic Twin Cam Inspection/Derby Cover O-Ring Gasket 5-Pack - Harley Twin Cam
$25.54
Free shipping on orders $99+ · Best value guarantee
affirm
From $2.12/mo with Affirm.
See if you prequalify
OUT OF STOCK
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returns — see policy
Authorized Dealer — sourced direct
About Cometic
Cometic Gasket manufactures multi-layer steel head gaskets and complete gasket kits in Concord, Ohio. On a built V-twin running higher compression or a big-bore kit, the MLS head gasket is what keeps the top end sealed — which is why Cometic is the default spec on so many engine builds.
This Cometic inspection/derby cover O-ring gasket is purpose-built for Twin Cam V-twin engines, ensuring a reliable seal for your primary cover. Offered in a convenient 5-pack, these gaskets are a smart choice for professional shops, multi-bike owners, or riders who frequently service their primary. Designed as an OEM-spec replacement, they effectively prevent oil weeping and keep your primary clean.
Why riders pick this
- Direct OEM replacement O-ring for derby covers
- Ensures leak-free primary cover sealing
- Convenient 5-pack for shops or multiple services
- Protects primary from dirt and debris
When you're servicing the primary on your Harley Twin Cam, a fresh derby cover gasket is essential to prevent unsightly and potentially damaging oil leaks. This Cometic O-ring style gasket is manufactured to precise OEM specifications, guaranteeing a perfect fit and a dependable seal every time. The 5-pack quantity means you'll have a supply on hand for multiple primary services or for future projects, making it a cost-effective solution for maintaining your V-twin's primary drive system.
Secure Sealing for Twin Cam Primary Covers
- Direct OEM replacement O-ring gasket for inspection/derby covers
- Ensures a leak-free seal for the primary drive system
- Convenient 5-pack for shops and frequent maintenance
- Helps prevent oil weeping and protects primary internals
Keep Your Twin Cam Primary Sealed
A properly sealed primary cover is crucial for the performance and cleanliness of your Harley Twin Cam. Whether you're doing a routine fluid change or a more involved primary component upgrade, this Cometic gasket provides the peace of mind that comes with a secure, leak-free seal. Having a stock of these gaskets means you're always prepared for primary service, helping you keep your Road Glide, Street Glide, or Softail running clean and performing its best.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9662
- UPC: 191070024673
- Quantity: 5 per pack
- Length: 4.55 in
- Width: 8.3 in
- Height: 0.55 in
- Weight: 0.05 lbs
Common questions
What is the primary function of this gasket?
This O-ring gasket seals the inspection or derby cover to the primary case on Twin Cam engines, preventing oil leakage from the primary drive.
Will this fit Milwaukee-Eight engines?
No, this specific O-ring gasket is designed for Twin Cam engines. Milwaukee-Eight models use different gaskets for their primary covers.
Do I need special tools for installation?
Installation typically requires basic hand tools to remove and reinstall the derby cover. No specialized tools are usually needed for the gasket itself.
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 | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9662 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.38
8 RATINGS
5★
6
4★
1
3★
0
2★
0
1★
1
✓ VERIFIED
Apr 19, 2023
dont buy it.
Doesn't fit!!!! 2004 electra glide standard. the seal is to long in circumference. Meaning it doesn't all fit in the groove. You cant put the derby cover on.
✓ VERIFIED
May 19, 2020
Happy with purchase
✓ VERIFIED
Feb 28, 2020
Quality o ring
✓ VERIFIED
Nov 7, 2019
Seems as good as original, maybe a little better hold in the primary cover groove as you add the derby cover. Will NOT work with 100-2095 derby cover as sections of the cover do not compress this gasket. Use replacement derby cover gasket 602-114.
✓ VERIFIED
May 2, 2016
Nice quality o-ring
