Add to Cart Peterbilt CF 4128 Rear Spring Assembly PBT03-07640 PAI Industries MSRP: Now: $401.29 Was: Peterbilt CF 4128 Rear Spring Assembly PBT03-07640 *Please Verify OEM Number Before Purchase *Image For Reference Only Heavy Duty Rear Spring Assembly Fits Peterbilt CF 4128 Models Reduces Weight And Improves Ride Performance And Durability Direct... MSRP: Now: $401.29 Was: Add to Cart