Add to Cart Peterbilt 359 Stainless Steel Axle Differential Switch Plate United Pacific MSRP: Now: $16.39 Was: Peterbilt 359 Stainless Steel Axle Differential Switch Plate Machined from high quality materials to perfectly fit OEM switches in your Peterbilt 359, guaranteed! Heavy Duty Axle Differential Switch Plate Constructed From High Grade Stainless Steel... MSRP: Now: $16.39 Was: Add to Cart