- 6 Inch Kenworth W900B Over Frame OEM Style Elbow Exhaust KitStarting At$2,349.42DF-KC-605048CP-CURVE6 Inch Kenworth W900L 45" Box Step OEM Style Elbow Exhaust KitStarting At$2,354.57DF-KV-605052CP-CHINORoadworks 8 Inch Stove Top Exhaust Kit For Kenworth W900L With 40 Inch Boxes And Single MufflerStarting at $3,501.99RWKITKW38ST96-GRoadworks 8 Inch Stove Top Exhaust Kit For Kenworth W900L With 40 Inch Boxes And Dual Cat ConvertersStarting at $3,501.99RWKITKW18ST96-GRoadworks 8 Inch Stove Top Exhaust Kit For Kenworth W900L With 45 Inch Boxes And Dual Cat ConvertersStarting at $3,501.99RWKITKW28ST96-G6 Inch Kenworth W900L 40" Box Step OEM Style Elbow Exhaust KitStarting At$2,417.40DF-KH-605052CP-CURVE6 Inch Kenworth W900L 40" Box Step OEM Style Elbow Exhaust KitStarting At$2,417.40DF-KH-605052CP-CHINO6 Inch Kenworth W900L 40" Box Step OEM Style Elbow Exhaust KitStarting At$2,417.40DF-KH-605052CP-EAGCLW6 Inch Kenworth W900L 40" Box Step OEM Style Elbow Exhaust KitStarting At$2,417.40DF-KH-605052CP-OZZIE6 Inch Kenworth W900A Under Frame OEM Style Elbow Exhaust KitStarting At$2,379.29DF-KB-605048CP-CHINO6 Inch Kenworth W900A Under Frame OEM Style Elbow Exhaust KitStarting At$2,379.29DF-KB-605048CP-CURVE6 Inch Kenworth W900A Under Frame OEM Style Elbow Exhaust KitStarting At$2,379.29DF-KB-605048CP-EAGCLW6 Inch Kenworth W900A Under Frame OEM Style Elbow Exhaust KitStarting At$2,379.29DF-KB-605048CP-OZZIE6 Inch Kenworth W900B Over Frame OEM Style Elbow Exhaust KitStarting At$2,349.42DF-KC-605048CP-CHINO6 Inch Kenworth W900B Over Frame OEM Style Elbow Exhaust KitStarting At$2,349.42DF-KC-605048CP-EAGCLW6 Inch Kenworth W900B Over Frame OEM Style Elbow Exhaust KitStarting At$2,349.42DF-KC-605048CP-OZZIE6 Inch Kenworth W900L 45" Box Step OEM Style Elbow Exhaust KitStarting At$2,354.57DF-KV-605052CP-CURVE6 Inch Kenworth W900L 45" Box Step OEM Style Elbow Exhaust KitStarting At$2,354.57DF-KV-605052CP-EAGCLW6 Inch Kenworth W900L 45" Box Step OEM Style Elbow Exhaust KitStarting At$2,354.57DF-KV-605052CP-OZZIE