✓ VERIFIED
Jan 16, 2020
Almost identical to OEM. Good fit. I did miss that they are sold as each and not as a pair. Small detail and my fault but it did slow my project down a bit.
COMETIC
SKU: 68-9491
Cometic Evo Big Twin Starter Shaft Seal - OIL Seal EVO 5/PK Oe#12051
$54.000,00
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Cometic EVO Big Twin starter shaft seal (OEM #12051) for V-twin motorcycles. This oil seal prevents starter cavity leakage and comes in a 5-pack for shops or multi-bike service.
Features
- 5-pack quantity
- Direct OEM replacement spec
- EVO Big Twin starter shaft application
Specifications
- Brand: Cometic
- Manufacturer Part #: C9491
- Quantity: 5 per pack
- Length: 6.05 in
- Width: 7.05 in
- Height: 0.3 in
- Weight: 0.02 lbs
Fitment
Fits EVO Big Twin V-twin motorcycles using OEM starter shaft seal #12051.
Frequently Asked Questions
What is a starter shaft seal and why does it matter?
The starter shaft seal prevents oil from leaking out of the starter cavity. A worn seal can cause messy leaks and starter damage over time.
Why is this sold in a 5-pack?
Pack quantity is ideal for shops doing multiple rebuilds, riders servicing several bikes, or those who want spares on hand.
Will this fit my Twin Cam or Milwaukee-Eight?
No — this is specific to EVO Big Twin engines. Twin Cam and M8 engines require different seal part numbers.
Is this a direct bolt-on replacement?
Yes — this is an OEM-specification replacement. It installs in the same location as the original seal.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9491 |
| WEIGHT | 0.02 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.87
15 RATINGS
5★
13
4★
2
3★
0
2★
0
1★
0
✓ VERIFIED
Oct 18, 2021
Great seals and gaskets do the job once when you use quality gaskets
✓ VERIFIED
Sep 26, 2019
Seal good and I haven't had any issues..
✓ VERIFIED
Jun 27, 2025
It worked like it was suppose to, delivery was quick. <br />Pleased.
✓ VERIFIED
Dec 19, 2023
Just what I needed
Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.
✓ VERIFIED
Jun 12, 2023
Cometic from here on out
These seals are the only ones I'll use. others came close but, for me, these are best.
