My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Cometic C5403-060 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 060

(GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86 + 168 more models)

Manufacturer

Picture for manufacturer Cometic

Part Number

C5403-060
6 reviews
Sale Price

$127.58

Estimated ship date Friday, November 20

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5403-060 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This high-performance gasket features a .060" compressed thickness and a 4.200" bore diameter, making it ideal for performance builds and engine rebuilds.

Key Features:

  • Multi-Layer Steel construction provides superior sealing and durability under high combustion pressures
  • 4.200" bore diameter accommodates stock and slightly overbored small block Chevy engines
  • .060" compressed thickness allows for precise compression ratio tuning
  • Designed for aftermarket cylinder heads with undersized water ports for custom port matching and flow optimization
  • MLS design withstands extreme temperatures and maintains seal integrity through thermal cycling
  • Embossed stainless steel layers with elastomeric coating ensure consistent clamping pressure

This gasket is compatible with classic Chevrolet small block engines including 265, 283, 302, 327, 350, and 400 cubic inch variants. The undersized water ports provide flexibility for engine builders to custom-match cooling passages to specific cylinder head configurations, optimizing coolant flow for high-performance applications.

Products specifications

Fits

GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86, C15/C1500 Pickup 1967-74, C2500 1979-86, K1500 Suburban 1979-86, G25/G2500 Van 1967-74 + 164 more models

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Material

Multi-layer Steel

No problems so far. Reasonable 2 day air costs

Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.

Product delivered as expected within 4 days. Lowest price on the web. No complaints.

This was an easy transaction, keep me notified thoughout the entire shipment. Price is what got my attention in the first place. I will be back for future needs.

Ordering was fine we will see if product is delivered properly.

Nobody else had part in stock. Instant shipping and a good price. Will do business again!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy