Shop OEM GENERAL MOTORS Part # 12581538 (12578249). Engine Cylinder Head. SRX; Left. STS; Left. XLR; Left. Cylinder Head - Repair or Replace. CAMSHAFT and TIMING. CRANKSHAFT and BEARINGS

Oil pan. Variable valve timing. & 5. STS; Exhaust; Left. STS; Exhaust; Right. STS; Intake; Left. STS; Intake; Right. Sts; Left; 2WD. Sts; Left; awd. Sts; No. 1. Sts; No. 3. STS; Primary. Sts; Right; 2WD. Sts; Right; awd. STS; Secondary. Sts; Stamped 12569092. Sts; Stamped 12584582.

STS; Left.