✓ VERIFIED
Jul 11, 2021
The product was good the shipping sucks. No reason it should take so long to get a small light weight package.
COMETIC
SKU: 68-10166
Cometic Milwaukee 8 Head Gaskets - M8 PR 4.075" .040"mls Gasket Bore 4.095" — Harley-Davidson (2018-2019)
$59.50
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Cometic Milwaukee 8 head gaskets engineered for high-performance V-twin engines, featuring a 4.075" bore with .040" MLS (multi-layer steel) construction. Direct fit for Milwaukee-Eight engines demanding reliable sealing under boost and heat.
Features
- 4.075" gasket bore, 4.095" finished bore
- 0.040" MLS (multi-layer steel) construction
- Cometic precision manufacturing for M8 engines
- Sized 8 in × 8.5 in × 0.25 in
Specifications
- Brand: Cometic
- Manufacturer Part #: C10166
- Gasket Bore: 4.075"
- Finished Bore: 4.095"
- Thickness: 0.040" MLS
- Length: 8 in
- Width: 8.5 in
- Height: 0.25 in
- Weight: 0.4 lbs
Fitment
Fits V-twin motorcycles with Milwaukee-Eight (M8) engine platforms.
Frequently Asked Questions
Will these fit my Twin Cam Harley?
No — these gaskets are designed exclusively for Milwaukee-Eight engines. Twin Cam owners need a different Cometic part number.
What does MLS mean?
MLS stands for multi-layer steel — a layered construction that seals better under heat and boost than single-layer gaskets.
Do I need new head studs or bolts?
Reusing factory head fasteners is common, but inspect for stretch before reinstalling. Many builders recommend fresh studs when doing a complete head gasket job.
Is this a single gasket or a set?
This is a single head gasket per pack. Order quantity as needed for your engine build.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-10166 |
| WEIGHT | 0.4 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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✓ VERIFIED
Dec 22, 2024
US made seals.
Quality product.<br /><br />Bla, bla, bla, bla, bla, bla, bla, bla, bla, bla
✓ VERIFIED
Aug 29, 2023
Intake manifold leaks
Great seals worked good on my 1992 Harley Davidson Flhtcu nice a tight no more leaks !! <br />Highly recommended !!
✓ VERIFIED
May 15, 2023
Time for new seals
Got change these out every now and then. Got a rebuild kit for the Mukuni. Might as well change the intake manifold seal while I am doing the rebuild.
✓ VERIFIED
Dec 10, 2022
Great product great quality at a great price you can't beat that.
✓ VERIFIED
Nov 22, 2022
Excellent job
