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Cometic C5249-027 MLS Cylinder Head Gasket Chevy Small Block Bore Thick - for V8 4.200 027

(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)

Part of: Cometic MLS Cylinder Head Gasket Bore Chevy Small Block

Other options in this family: Cometic C5245-040 Cometic C5269-040 Cometic C5403-051 Cometic C5246-051 Cometic C5248-080

Manufacturer

Picture for manufacturer Cometic

Part Number

C5249-027
9 reviews
Sale Price

$96.24

In Stock (6)

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Product Details

The Cometic C5249-027 is a multi-layer steel (MLS) cylinder head gasket designed specifically for Chevrolet Generation 1 Small Block V8 engines. This precision-engineered gasket features a .027" compressed thickness and is sized for a 4.200" bore diameter, making it ideal for high-performance and racing applications where reliability under extreme conditions is critical.

Key Features:

  • Multi-layer steel construction provides superior sealing and durability under high cylinder pressures and temperatures
  • 4.200" bore diameter accommodates stroker and overbored engine builds
  • .027" compressed thickness allows for precise compression ratio tuning
  • Designed for 18/23 degree cylinder heads with round bore configuration
  • Includes steam holes for proper coolant circulation and thermal management
  • Embossed stainless steel layers with Viton rubber coating ensure maximum sealing

Cometic MLS gaskets are the preferred choice of professional engine builders and racers worldwide. The multi-layer design allows the gasket to conform to imperfect sealing surfaces while maintaining excellent recovery properties through repeated heat cycles. This gasket is compatible with a wide range of Chevy small block variants including 283, 302, 327, 350, and 400 cubic inch engines when bored to 4.200" diameter.

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

Had the product I needed at a price that couldn't be beat. The shipping was a little high, but not completely out of line, either, and it was still better than other companies who have even MORE ridiculous shipping rates. Will buy from them in the future if they have what I need.

Found exactly what I wanted

Good prices free shipping

Great price and fast shipping!

Great prices and easy transaction

Best price I could find on line, shipped really fast. With how low the price is I was worried but everything came fast and it was the correct parts. This place really keeps the cost of racing down.

Everything went seamlessly. I placed my order on a Thursday and it got here Tuesday morning. No problems, and it was the best price I could find.

Had to upgrade to a Snell 2010 helmet this year, bought the identical helmet for $200 less than I paid 8 years ago! Fast shipping, I will be checking Autoplicity first in the future!

GOOD PRICE! way to go keep up the good work!!!!

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