Cometic

MLS Cylinder Head Gasket 0.098" x 4.030" Bore

$119.99

SKU: C5399-098

In Stock
In Stock
Ships by Aug 29
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Cometic C5399-098 is a Multi-Layer Steel (MLS) cylinder head gasket specifically engineered for Chevrolet Gen-1 Small Block V8 engines. This gasket measures 0.098 inches in thickness and accommodates a 4.030-inch bore, making it ideal for applications using aftermarket cylinder heads. Constructed with three to five layers of high-strength stainless steel, this gasket offers superior durability, corrosion resistance, and the ability to rebound under stress. This Viton coating provides excellent heat resistance, up to 250°C (482°F). Designed for customization, the Cometic C5399-098 includes undersized water ports that allow for modification to suit specific aftermarket head configurations. Unlike traditional gaskets, Cometic MLS head gaskets do not require sealants or re-torquing after installation, simplifying the assembly process.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCometic
Part NumberC5399-098
CategoryGaskets and Seals

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy