OER Parts offers a wide selection of Bumpers for your 1974 Chevrolet K20 Pickup. OER Parts offers 1974 Chevrolet K20 Pickup Fiberglass Bumpers, 1974 Chevrolet K20 Pickup Front Bumpers, 1974 Chevrolet K20 Pickup Front Bumper Covers 1974 Chevrolet K20 Pickup Rear Bumpers, and 1974 Chevrolet K20 Pickup Rear Bumper Covers.