Thermostat Gasket - Small Block Chevy and Big Block Chevy V8 Engines - Bulk Packaged

Thermostat Gasket Fits: Big Block Chevy - 1965-90 - 396-454 Small Block Chevy - 1955-90 - 262-400 Small Block Mopar - 1979-'92 318/360 Small Block Mopar - 1992-'03 3.9L/5.2L/5.9L Magnum Bulk Packaged

PART# 740

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Note: This part is bulk packaged. Order part number 740C for retail packaged packaging.


Manufactured from a blend of nitrile rubber and fiber for excellent sealing and durability. Precision die cut for application.


  • This gasket is bulk packaged
  • Made from Cellulose/Nitrile Composition
  • Provides Excellent Sealing and Durability
  • These Gaskets are Die Cut for a Precision Fit
  • Fits Small Block Chevy V8 Engines 1955-'90
  • Fits Big Block Chevy V8 Engines 1965-'90
  • Fits Small Block Chrysler 318/360 1979-'92
  • Fits Small Block Chysler 3.9L/5.2L/5.9L Magnum 1992-'03


BrandMr. Gasket
Emission Code5
EngineChevrolet Big Block Mark IV
Chevrolet Small Block Gen I
Chrysler Small Block LA
Chrysler Small Block Magnum
Product TypeWater Neck Gaskets
Part Number740


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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Note: This part is bulk packaged. Order part number 740C for retail packaged packaging.


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