Buy 1999 Chevrolet Silverado 1500 Base Standard Cab Pickup Fleetside 4.3L Vortec V6 A/T RWD Engine Rear, BEARINGS, CAMSHAFT - OEM Chevrolet Part # 12618626 (12521651)

Bearing.
Engine Balance Shaft Bearing. Set. Engine Balance Shaft.

Engine Balance Shaft Bearing

All Models; Rear. Astro, Safari; Rear. Express, Savana; Rear. S-Series; Rear. Silverado, Sierra; Bearing Kit. Silverado, Sierra; Rear.
Balance Shaft Bearing - Repair or Replace
A worn balance shaft bearing could render your engine's balance shaft inoperable. To ensure that yours is working correctly, have your 1999 Chevrolet Silverado inspected by a professional technician.