COMETIC SKU: 68-10174

Cometic Milwaukee-Eight Motor Case O-Ring/Seals .032" AFM 2-Pack - Harley & Indian M8

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$4.03

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NOT SURE ABOUT FITMENT? Email us: SALES@VTWINBIKERS.COM

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.

Ensure a perfect seal on your Milwaukee-Eight motor case with this 2-pack of Cometic O-rings and seals. Engineered to OEM specifications with .032" AFM material, these provide a reliable, leak-free seal for Harley-Davidson and Indian Motorcycle M8 engines. Essential for any engine case work, these seals are critical for maintaining engine integrity.

Why riders pick this

OEM replacement for Milwaukee-Eight motor cases
2-pack of O-rings and seals for comprehensive coverage
Durable .032" AFM material construction
Ensures a reliable, leak-free engine case seal
Compatible with Harley-Davidson and Indian M8s

These Cometic Milwaukee-Eight motor case O-rings and seals are a direct OEM-spec replacement, designed to deliver exceptional sealing performance. Each pack contains 2 sets of O-rings and seals, making it convenient for complete engine case sealing during a rebuild or major service. The .032" AFM material ensures a consistent and durable seal, preventing oil leaks and maintaining optimal engine pressure.

OEM-Spec Sealing Performance

Direct OEM replacement for Milwaukee-Eight motor cases
Includes 2 sets of O-rings and seals per pack
Constructed from durable .032" AFM material
Ensures a reliable, leak-free engine case seal

Foundational for Engine Health

When you're splitting the cases on your Milwaukee-Eight, replacing these critical O-rings and seals is paramount. Cometic's precision-manufactured components meet or exceed factory standards, giving you confidence in your engine build. Proper installation of these seals helps prevent internal and external oil leaks, which are vital for the longevity and performance of your M8. Always refer to your factory service manual for detailed installation instructions and torque specifications specific to your year and model.

Specifications

Brand: Cometic
Manufacturer Part #: C10174
OEM Part #: 25700433
Thickness: .032"
Quantity: 2 per pack
Length: 7 in
Width: 6 in
Height: 0.25 in
Weight: 0.1 lbs

Common questions

Are these motor case O-rings and seals compatible with my Milwaukee-Eight engine?

Yes, these Cometic O-rings and seals are designed as a direct OEM replacement for part number 25700433 on all Milwaukee-Eight motors, ensuring proper fitment.

How many O-ring and seal sets are included in each pack?

Each pack contains two complete motor case O-ring and seal sets, providing enough components for a thorough engine case sealing job.

Do I need special tools for installing these motor case seals?

Installation of motor case seals typically requires specialized tools and adherence to factory service manual procedures, especially if you're splitting the engine cases. Always refer to the service manual for your specific year and model Milwaukee-Eight.

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	68-10174
WEIGHT	0.1 lb

Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.

CUSTOMER REVIEWS

2 RATINGS

5★ 2

4★ 0

3★ 0

2★ 0

1★ 0

✓ VERIFIED

Jul 29, 2019

Good gasket it’ll get five stars