Peterbilt 379 Frame & Chassis

BESTfit Set Of 6, 4 Inch 0.5 Degree Aluminum Alloy ShimsThe provided shims are constructed from heavy-duty aluminum alloy, designed to correct caster angle issues. Each shim measures 4 inches in width and has a 0.5-degree angle. With a spring pad length...

BESTfit Set Of 6, 4 Inch 2.0 Degree Aluminum Alloy ShimsThe offered shims are crafted from heavy-duty aluminum alloy and are designed to correct caster angle issues. With a width of 4 inches and a 2-degree angle, these shims feature a 6 1/2-inch spring...

BESTfit 2 Leaf Spring Fits Peterbilt Air Trac SuspensionThe Leaf Spring is designed to fit Air Trac Suspension systems, featuring 2 leaves with a hook on the second leaf for secure attachment. It has a width of 4 inches, with the short end measuring...

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 Spring Hanger For 4 Inch Spring Fits Peterbilt 379The Spring Hanger is designed for either the driver or passenger side and is positioned at the rear of the front suspension. It accommodates a 4.0-inch spring with a bolt height of 6-1/4 inches...

BESTfit Air Bag For Kenworth AG400L 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 Steel* Top Plate...

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...