Replaces Part Number:
12551933, 12558177, 12558178, 12585673
12611384, 12612350, 12617944, 12622033
12630223, 12633904, 12637683, 12639249
8906043, BTR73450
Fitment:
Compatible with GM Compatible with Chevrolet LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L
Compatible with Chevrolet:
Compatible with Silverado 3500 HD
Compatible with Silverado 2500HD
Compatible with Silverado 1500
Compatible with Silverado 3500

Compatible with GMC:
Compatible with Sierra 1500
Compatible with Sierra 2500 HD
Package Contents:
Gen III Valley Cover Gasket 12558178
Water Crossover/Block Off Gaskets 12551933
Knock Sensor Grommet 12558177
Oil Filter Adapter Bypass Gasket 12611384
LS Damper Seal
LS1/LS2/LS3 Header Gasket
LS Valve Cover Gasket
LS Water Pump Gasket
LS Front Cover Gasket
Rear Main Seal, LS Oil Pan Gasket
LS Rear Cover Gasket
LS Front Cover Gasket
Multi-Layer Steel (MLS) Head Gaskets for LS9 Engines