COMETIC SKU: 68-995151

Cometic Twin Cam EST Gasket Kit — Harley-Davidson Softail Heritage Classic, Softail Fat Boy, Road King (1999-2017)

$147.43
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Cometic Twin Cam EST gasket kit for V-twin engines, containing MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material. Complete overhaul kit with every gasket, seal, washer, and O-ring needed for a full engine rebuild.

Features

  • MLS head gaskets
  • Steel Viton-coated base gaskets
  • Blue Viton valve stem seals
  • AFM material components
  • All gaskets, seals, washers, and O-rings included for complete overhaul

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C9951-051
  • Weight: 1.3888 lbs

Fitment

Fits V-twin motorcycle engines, including Harley-Davidson Twin Cam EST models.

Frequently Asked Questions

What's included in this gasket kit?

Every gasket, seal, washer, and O-ring needed for a complete engine overhaul — head gaskets, base gaskets, valve stem seals, and AFM material components.

Will this fit my Twin Cam Harley?

Yes, this kit is designed for Harley-Davidson Twin Cam EST engines. Verify your engine type before ordering if you have a different generation.

Is this a full overhaul kit or partial?

Full overhaul kit — it contains all the gaskets and seals needed for a complete engine rebuild.

What materials are used in this kit?

MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material for optimal sealing and durability.

BRANDCometic
TYPEGaskets/Seals
SKU68-995151
WEIGHT1.39 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.36
14 RATINGS
5★ 11
4★ 0
3★ 1
2★ 1
1★ 1
✓ VERIFIED
May 16, 2026

not what I needed. description wasn't very clear but not worth sending back. oh well just have to be more careful next time

— John L
✓ VERIFIED
Mar 8, 2026

Gasket

Working fine was for my brother's bike

— CHARLES S
✓ VERIFIED
Oct 25, 2024

Works Fine at a lower cost

I usually have an OEM from Harley Davidson, I have used this twice on my 04 Electraglide, no leaks or issues. At a much lower price.

— Danny D
✓ VERIFIED
Jun 8, 2024

A mediocre gasket

I didn’t use this gasket after removing the derby and seeing the Harley gasket that I removed. No comparison in quality. I ended up going to the local dealer and bought an O.E. gasket.

— JOHN P
✓ VERIFIED
Jun 6, 2023

A good buy

The gasket fit nicely and no leaks so far . The fitment was spot on .

— John H
✓ VERIFIED
May 4, 2023

There is nothing on them indicating they are actually Cometic gaskets. Are they Substitutes?

— CRAIG B