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Cometic C5691-027 Buick Stage I/II MLS Cylinder Head Gasket Bore - V6 3.860

(Cadillac DeVille 1980-82, Eldorado 1981-82, Seville 1981-82, Fleetwood 1980-82; Chevrolet Camaro 1980-81, 1995-2002, Impala 1980-85, 2000-05 + 49 more models)

Manufacturer

Picture for manufacturer Cometic

Part Number

C5691-027
8 reviews
Sale Price

$101.18

Estimated ship date Sunday, November 22

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Product Details

The Cometic C5691-027 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Buick Stage I and Stage II V6 engines. This high-performance gasket features a 3.860-inch bore diameter and a compressed thickness of .027 inches, making it ideal for performance builds and engine rebuilds requiring precise sealing and durability.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • 3.860-inch bore diameter engineered for Buick Stage I and Stage II V6 applications
  • .027-inch compressed gasket thickness for optimal compression control
  • Eliminates gasket failure from extreme cylinder pressures in performance applications
  • Provides excellent resistance to combustion gas leakage and coolant seepage
  • Handles thermal expansion better than traditional composite gaskets

Cometic MLS gaskets are the preferred choice for performance enthusiasts and engine builders who demand reliable sealing under high-stress conditions. The multi-layer steel design allows for controlled compression and superior torque retention, making this gasket suitable for both street and racing applications on Buick V6 engines.

Products specifications

Fits

Cadillac DeVille 1980-82, Eldorado 1981-82, Seville 1981-82, Fleetwood 1980-82; Chevrolet Camaro 1980-81, 1995-2002, Impala 1980-85, 2000-05, Malibu 1978-83, Caprice 1980-85, El Camino 1978-84, Monte Carlo 1978-87, 1998-2005 + 45 more models

Prop 65

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

Material

Multi-layer Steel

wish all shipping was free bu pirces are great

The order was placed on a weekend (Order #30758 <br>Order Date: Saturday, September 15, 2012 Order Total: $31.73 <br>It was processed on the first business day. I couldn't ask for a quicker response.<br><br>Good joob all !!!<br>Marty Spellman

Fast shipping, product was excellent .

Very friendly customer service! They also shipped my radiator out very quickly. I will definetly be ordering from autoplicity again!

Amazing !! FAST SHIPPING and GREAT PRICES !! I couldn't ask for better !! I will definitely shop with Autoplicity again !!

I needed a few small XRP fittings for our NHRA Top Alcohol Dragster, I had called XRP and even a "pro racer discount" the price was ridiculous; couple this with their ridiculous shipping/handling charge I had to go elsewhere. I typed in the XRP part number into Google and found Autoplicity, twice as many pcs. as I was planning on ordering and with shipping it was cheaper than one fitting from XRP direct. I will be checking Autoplicity anytime I'm ordering something from this day on, everything about the transaction was smooth and simple. I just got my tracking number today and the stuff is on its' way. Thanks for making this transaction so easy and not robbing your customers on something as frivolous as "handling".<br><br>Respectfully,<br>Brandon Booher<br>NHRA TAD #34

I build engines for Classic muscle cars and hot rods. Presently assembling chev. SB 383 cu/in. Went shopping for a Name Brand rotating assembly that was complete and ready to install.Shopped several other sites before finding "Autoplicity" Prices were GREAT (best I could find Anywhere), Shipping Very prompt, Shpg. charges Very reeasonable,I will Defenitely use them again!!!

Good prices. Good communication.

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