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Valve Cover Gasket > < Crankshaft Main Bearing Seal|Service and Repair
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Cylinder Head Gasket: Technical Service Bulletins
Cylinder Head Gaskets - New Design

Number  87-6(Gasoline)-58   

Date  8/87

Subject:

NEW CYLINDER HEAD GASKETS

1987 AND PAST MODEL YEAR VEHICLES EQUIPPED WITH 4.3L, 5.0L OR 5.7L 90 DEGREE V ENGINES

An improved cylinder head gasket of composite construction has been released to replace the metal gasket. The new gasket has improved sealing
capabilities. The new part numbers shown below should be used for service.

APPLICATION

CYLINDER HEAD GASKET

4.3L

10066080

5.0L

10066081

5.7L

10066082

Engines manufactured after the following build dates should have the composite gasket.

Engine

Build Date

Engine Build Code

4.3L

May 15, 1987

T0515XXX

5.0L

July 1, 1987

V0701XXX

K0701XXX

5.7L

July 1, 1987

V0701XXX
K0701XXX

Valve Cover Gasket > < Crankshaft Main Bearing Seal|Service and Repair