Peterbilt 375/377 Frame & Chassis

BESTfit Single Leaf Z Spring Fits Peterbilt New Low Air Suspension Rear Passenger SideThe Z Spring is tailored for new low air suspension systems, fitting the rear passenger side. Constructed with a single leaf and measuring 3 inches in width, it has a...

BESTfit Single Leaf Z Spring Fits Peterbilt New Low Air Suspension Rear Driver SideThe Z Spring is designed specifically for low air suspension systems, intended for the rear driver's side. It features a single leaf construction with a width of 3 inches...

BESTfit Rear 2 Leaf Z Spring Fits Peterbilt 300 Series 2004 & OlderThe 2 Leaf Z Spring features a Z spring design with no spring eye, measuring 3.50 inches in width and consisting of 2 leaves with an SS arch. This aftermarket replacement part, not OEM,...

BESTfit Rolling Lobe Air Spring AssemblyThe Air Spring is of the rolling lobe type and is sold individually as an aftermarket replacement part, not OEM. It replaces OE Number W01-358-9203. This item ships directly from the manufacturer and may arrive in...

BESTfit Semi-Round U-Bolt Kit For Peterbilt Low Air Leaf Suspension * High Quality U Bolt Kit* U Bolt Type Flat Semi-Round Bend* Grade 8* U Bolt Diameter 1 Inch* Width 3.500 Inch* Length 15.500 Inch* Sold As Kit* Warranty On U Bolt Kits Against Defects...

BESTfit Square U-Bolt Fits Peterbilt Low Air Leaf Suspension * High Quality U Bolt Kit* U Bolt Type Square Bend* Grade 8* U Bolt Diameter 3/4 Inch* Width 3.500 Inch* Length 5.125 Inch* Sold As Kit* Warranty On U Bolt Kits Against Defects In Workmanship &...

BESTfit U Bolt Saddle For Peterbilt Low Air Leaf Suspension * High Quality U Bolt Saddle* U Bolt Saddle* 3.5 Inch X 3.625 Inch* Sold Individually* Warranty On U Bolt Saddles Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BESTfit 0.09375 Inch Thick Adjustment Shim * High Quality Adjustment Shim* 1-3/4 Inch Center To Center* 3/32 Inch Thick* Low Mount * Air Leaf* Sold Individually* Warranty On Adjustment Shims Against Defects In Workmanship & Material From Date Of...

BESTfit 0.0625 Inch Thick Adjustment Shim * High Quality Adjustment Shim* 1-3/4 Inch Center To Center* 1/16 Inch Thick* Low Mount * Air Leaf* Sold Individually* Warranty On Adjustment Shims Against Defects In Workmanship & Material From Date Of...

BESTfit Spring Hanger Assembly Includes Wear Pad Kit * High Quality Air Trac Hanger* Includes Wear Pad Kit* Front Of Rear* Air Trac* Sold As Kit* Warranty On Air Trac Hangers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BESTfit Air Bag For Peterbilt New Low Air Leaf Suspension * High Quality Rear Drive Air Bag* Plastic Base* Rolling Lobe Style* Load (Lbs.) At 80 PSI 5640* Load (Lbs.) At 100 PSI 7070* Natural Freq. (Cpm) 65* Design Height Inch 16* Bottom Plate Type...

BESTfit Premium Poly Bushing For Peterbilt Rear Air Leaf, Low Air Leaf & Air Trac Suspensions * High Quality Bushing* Made Of Poly* Rotational* 380/440 Series* Air Trac Models, Air Leaf Models* Bushing (Type 1) Premium Poly Bushing* Bushing (Type 2)...