You are buying: Chevy V8 305 Head Gasket Set 1987-1993 Detroit Gasket 21640CS NOS

Condition: This Engine Kit Set Is New Old Stock. 

Additional Notes: This is a Detroit Gasket 21640 CS Cylinder Head Gasket Set for Chevrolet small block V8 engines. It is New Old Stock (NOS), never installed, and comes in its original packaging.

Fitment (per catalog/application notes):

  • Chevrolet 5.0L V8 (305 CID) engines

  • Model years: 1987 – 1993

  • Common applications include Chevy Camaro, Caprice, Monte Carlo, Impala, and C/K Pickup trucks equipped with the 305 CID V8.

Part Numbers on Box:

  • Detroit Gasket: 21640 CS

  • Cross-reference: Fel-Pro HS8510PT-5, McCord, CMS163

Condition:

  • New Old Stock (NOS)

  • Packaging may show wear from storage, but gasket set is complete and unused 

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