COMETIC SKU: 68-9847F

Cometic Evo Big Twin EST Gasket Kit — Harley-Davidson Electra Glide Classic, Softail Custom, Softail Heritage Classic (1984-1999)

$1.199.000,00
Free shipping on orders $99+ · Best value guarantee
From $99.916,66/mo with Affirm. See if you prequalify
OUT OF STOCK
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returnssee policy
Authorized Dealer — sourced direct
NOT SURE ABOUT FITMENT?

Cometic Evo Big Twin EST gasket kit supplies every gasket, seal, washer, and o-ring needed for a complete engine overhaul on Evolution Big Twin engines. Features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals engineered for modern V-Twin performance.

Features

  • MLS head gaskets
  • Steel Viton-coated base gaskets
  • Blue Viton valve stem seals
  • AFM material components
  • Complete overhaul kit — all gaskets, seals, washers, and o-rings included

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C9847F
  • Weight: 1.71 lbs
  • Kit Type: Complete gasket and seal set

Fitment

Fits Evolution Big Twin V-Twin engines, including Harley-Davidson and Indian Motorcycle models equipped with EST configurations.

Frequently Asked Questions

What's included in this kit?

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

Will this fit my Harley Big Twin?

This kit is designed for Evolution Big Twin EST engines. Verify your engine type (Evo, Twin Cam, or Milwaukee-Eight) before ordering.

Do I need to buy additional gaskets separately?

No — this is a complete overhaul kit with all the gaskets and seals required for a full engine teardown and rebuild.

What material are the head gaskets?

MLS (multi-layer steel) construction for durability and reliable sealing under high compression.

BRANDCometic
TYPEGaskets/Seals
SKU68-9847F
WEIGHT1.71 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