Semi-Truck Frame Chassis Parts
Need semi-truck frame chassis parts? Choose from high-strength frame rails, crossmembers, and reliable fifth wheel replacement parts to keep your rig solid. Enjoy a smooth ride with quality springs and shock absorbers. Ensure stable control with our durable control arms and steering linkages. Looking for axles or frame steps? We've got those too. Shop at 4 State Trucks!
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BESTfit Insulator Box For Spring End Bushing For Mack Rear SS34, SS38, SS44, SS50, SWS573 Camel Back Suspension
BESTFIT TRUCK PARTS
$126.99BESTfit 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...$126.99 -
BESTfit Rear Trunnion For Mack SS44, SWS573 Camel Back Suspension
BESTFIT TRUCK PARTS
$366.99BESTfit 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...$366.99 -
BESTfit 7.75 Inch U-Bolt Top Plate For Mack MAXAIR - Twisted Sister AL231, AL405 Suspension 2001-2004
BESTFIT TRUCK PARTS
$41.81BESTfit 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...$41.81 -
BESTfit Rear Air Spring For Mack MAXAIR - Twisted Sister AL231, AL405 Suspension 2001-2004
BESTFIT TRUCK PARTS
$263.99BESTfit 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...$263.99 -
BESTfit 12 Inch 80 PSI Replacement Suspension Air Bag
BESTFIT TRUCK PARTS
$228.99BESTfit 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...$228.99 -
BESTfit Shackle Hanger Replaces 68127-001, 681254-001, 68138 For Hendrickson Suspension
BESTFIT TRUCK PARTS
$117.99BESTfit Hendrickson Suspension Fits Freightliner Front AirtekThe 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...$117.99 -
BESTfit 2 Leaf Spring Replaces 03-02432, C81-6007 For Peterbilt Air Trac Suspension
BESTFIT TRUCK PARTS
$247.99BESTfit 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...$247.99 -
BESTfit Rear Spring 2 Leaf Z Spring Replaces 03-07640 For Peterbilt Low Air Leaf Suspension
BESTFIT TRUCK PARTS
$501.99BESTfit 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,...$501.99 -
BESTfit Air Spring Assembly With Rolling Lobe - Replaces W01-358-9203
BESTFIT TRUCK PARTS
$175.99BESTfit 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...$175.99 -
BESTfit Double Convoluted Air Spring Replaces W01-358-7410 For Freightliner FAS 1 Suspension
BESTFIT TRUCK PARTS
$142.99BESTfit Air Bag For Freightliner FAS 1 Suspension SystemThe Air Spring is a double convoluted type and is sold individually as an aftermarket replacement part, not OEM. This item ships directly from the manufacturer and may arrive in a separate package...$142.99 -
BESTfit 8 Inch Premium Poly Bushing With 3 Inch Taper & 1.25 Inch 12 Thread - Replaces 44697000
BESTFIT TRUCK PARTS
$133.99BESTfit Rotational Bushing fits Freightliner Airglide SuspensionThe Poly Bushing is a rotational type designed for Airglide 10 systems, with an 8.00-inch length, 3.00-inch taper, and 1-1/4 inch -12 threads. It has a maximum width of 2.750 inches and is...$133.99 -
BESTfit Shock Bracket Stud Replaces K233-520 For Kenworth T660
BESTFIT TRUCK PARTS
$34.77BESTfit Shock Bracket StudThe Shock Bracket Stud is designed for the lower position of the T2000 Front assembly. It features M16 - 2.00 and M20 - 2.50 thread sizes with an overall length of 220.50MM. Sold individually, this aftermarket replacement part...$34.77