FRAME, CHASSIS, & MUDFLAPS

BESTfit Spring End Bushing Insulator Box - Replaces 25168110, 52QK418AP4, 52QK418BP4, R303688 & CS71632BThe Insulator Box is designed for the spring end bushing and is compatible with various suspension systems, including Rear SS34, SS38, SS44, SS50, and...

BESTfit Trunnion For 3.5 Inch Trunnion Shaft & 4 Inch Spring - Replaces 25130237 & 39QK55The Trunnion, suitable for SS38-44 Series, features a 3 1/2-inch shaft and comes with 1-A758 bushing. Sold individually, it does not include ears and serves as an...

BESTfit U-Bolt Top Plate - Replaces 587752, 58775-002, 65084, 65084-000, 11QK497M2, R3015721The U Bolt Top Plate, replacing OE numbers 587752, 58775002, 58775-002, 65084, 65084000, 65084-000, 11QK497M2, and R3015721, is sold individually. It ships...

BESTfit Air Spring For Mack MaxAir Suspension - Replaces 9647, 58786002, 587862, 64917002, 25161909 & 57QL417MThe Air Spring, serving as a replacement for OE numbers 9647, 58786002, 587862, 64917002, 25161909, and 57QL417M, ships directly from the...

BESTfit Replacement Suspension Air BagThe airbag is designed with a pressure rating of 80 PSI and a height of 12 inches. Its bottom plate is constructed of plastic, featuring a 2-hole top plate and a 2-hole bottom plate. The bottom plate alignment is...

BESTfit Front Fender Extensions Fit HinoThe fender extension is intended for the passenger side and is sold individually. It's manufactured in North America. Please note that inspection and test fitting (also known as dry fitting) is required on all...

BESTfit Front Fender Extensions Fit HinoThe fender extension is designed for the driver's side and is sold individually. It's manufactured in North America. Please note that inspection and test fitting (also known as dry fitting) is necessary on all...

BESTfit Hendrickson Suspension Fits Freightliner Front Airtek The Shackle Hanger, designed for the front, made of black steel, and suitable for either the driver or passenger side, is sold individually as an aftermarket replacement part, not OEM. It...

BESTfit Suspension Frame Bracket Fits Kenworth K100, T350-T450, T600, T800 & W900The Center Frame Bracket is sold individually as an aftermarket replacement part, not OEM. It replaces OEM numbers K272-184 and K274-184. Please note that this item is a...

BESTfit Parabolic Steer Axle Leaf SpringThe Parabolic Steer Axle Leaf Spring, sold individually, features specific dimensions: 4 inches in overall length, 1.75 inches in outer diameter, and 1 3/8 inches in inner diameter. It also has a thread size of 6...

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...

Kenworth BESTfit Single Leaf Z Spring Fits AG400L Suspension Rear Passenger SideThe Z Spring is tailored to fit the rear passenger side, featuring a single leaf with a width of 3 inches. It has a short side measuring 24-1/8 inches and a long side of 16...