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Powertrain

Cylinder Head

For GMC, Chevrolet, Buick, Cadillac and Isuzu vehicles

OEM Part Numbers

1257892581257892501255986412561706125636808125636800

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  • Fitments

classic style (creased door skin) 5.3L VIN Z (8th digit, opt L59)

(5.3L) w/o notched decking surface by cylinder 3 and 6

8-323 (5.3L) w/o notched decking surface by cylinder 3 and 6