Cometic M8 Molded Rubber Primary Housing Gasket - C10306F5 - Harley Milwaukee-Eight

$46.95
PICK MY VTWIN MOTORCYCLEThis part is vehicle specific. Pick your motorcycle to confirm it fits.
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Specifications

BRANDCometic
TYPEGaskets/Seals
SKU68-10306F5
PART NUMBERC10306F5
CATEGORYGaskets/Seals
MATERIALMolded rubber
TYPEPrimary housing gasket
WEIGHT1.0 lb

Fitment

Fits these motorcycles

Listed per manufacturer fitment data. Not sure? Email us and we confirm before you order.

REVIEWS (15)

Cometic molded rubber primary housing gasket, part number C10306F5, is a replacement seal for the primary housing. It is made from molded rubber rather than standard paper, which gives it a more durable and consistent seal at the primary cover.

Riders choose this gasket when servicing the primary drive, whether swapping clutch components, inspecting the primary, or replacing a worn gasket. Its molded rubber construction is intended to help prevent oil leaks from the primary cover, keeping the drive area clean and the seal intact.

The gasket is an OEM-spec replacement built as a direct swap for the primary housing. It is a straightforward maintenance part for V-twin owners who want reliable sealing and fewer messy oil leaks from the primary.

Specifications

  • Brand: Cometic
  • Part Number: C10306F5
  • Category: Gaskets/Seals
  • Material: Molded rubber
  • Weight: 1 lbs
  • Type: Primary housing gasket

Common questions

What material is this primary housing gasket made from?

It is made from molded rubber, which Cometic uses to provide a more durable seal than standard paper gaskets.

What is the purpose of this gasket?

It is designed to help prevent oil leaks from the primary cover and works as a replacement during primary service.

Is this an OEM-spec part?

Yes, it is described as an OEM-spec replacement built to serve as a direct swap for the primary housing gasket.

CUSTOMER REVIEWS
4.9
15 CUSTOMER REVIEWS
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.

— Anonymous
Oct 18, 2021

Great seals and gaskets do the job once when you use quality gaskets

— Anonymous
Sep 26, 2019

Seal good and I haven't had any issues..

— Anonymous
Jun 27, 2025

It worked like it was suppose to, delivery was quick. <br />Pleased.

— Lloyd S
Dec 19, 2023

Just what I needed

Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.

— Carlos L
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.

— Vincent S