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Cometic C5247-120 MLS Cylinder Head Gasket Chevy Small Block Bore Thick - 4.125 120

(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

C5247-120
8 reviews
Sale Price

$232.11

Estimated ship date Monday, November 23

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Product Details

The Cometic C5247-120 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Chevrolet Generation-1 Small Block V8 engines. This gasket features a .120" compressed thickness and 4.125" bore diameter, making it ideal for engines with increased compression or bore sizes beyond stock specifications.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme cylinder pressures
  • 4.125" bore diameter accommodates overbored or stroker engine builds
  • .120" compressed gasket thickness allows for precise compression ratio tuning
  • Designed for 18-degree and 23-degree cylinder head configurations
  • Round bore design with integrated steam holes for proper coolant circulation
  • Compatible with Chevrolet Gen-1 Small Block V8 engines including 265, 283, 302, 327, 350, and 400 cubic inch variants

Cometic's MLS gaskets feature multiple layers of stainless steel with elastomeric coatings that provide exceptional recovery and sealing characteristics. The gasket's ability to withstand extreme temperatures and pressures makes it an excellent choice for high-performance street, racing, and forced-induction applications. The inclusion of steam holes ensures proper coolant flow to prevent hot spots and maintain consistent engine temperatures.

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

good so far

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!!!!

Lightning fast shipping!!! I expected it to be here in 2-3 days, not the next.

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