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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Primary Air Tank, Replaces 12-15475-000 For Freightliner
BESTFIT TRUCK PARTS
$677.99Primary Air Tank * High Quality Air Tank* Sold Individually* Warranty On Air Tanks Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)**** Replaces OE Number 12-15475-000* Replaces OE...$677.99 -
Air Bag For Steer Axle Kit
AUTOMANN USA
$143.99Air Bag * High Quality Air Bag* For Steer Axle Kits* Sold Individually* Warranty On Air Bag Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***$143.99 -
Type 30 Brake Diaphragm - 8 Inch Diameter
TPHD
$12.31Replacement 8 Inch Brake Diaphragm - Type 30 * High Quality Brake Diaphragm* Type 30* 7.875 Inch Outside Diameter* 1.505 Inch Height* Sold Individually* Warranty On Brake Diaphragms Against Defects In Workmanship & Material From Date Of Purchase*** High...$12.31 -
Air Bag Replaces W01-358-9422 For Kenworth Airglide 100
AFTERMARKET
$112.99Air Bag Fits Kenworth * High Quality Air Bag* Sold Individually* Warranty On Air Bag Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)**** Replaces OEM # K303-6, K303-14, K303-15$112.99 -
BESTfit Air Spring For Hendrickson Trailer With Reyco Suspension
BESTFIT TRUCK PARTS
$161.99Trailer Suspension Air Bag W01-358-6927 Replacement * High Quality Air Spring * Double Convoluted Air Spring For Reyco Air Ride* Air Bag Specifications:- Load at 80 PSI 2440 LBS- Load at 100 PSI 3050 LBS- Design Height 10 Inches- Top Plate Hole, Stud Qty...$161.99 -
Air Cylinder W/ 15.5 Inch C-C Mounting Holes For Jost 5th Wheel Slider
AUTOMANN USA
$242.99Jost Air Cylinder * High Quality Air Cylinder* For Jost 5th Wheel Slider* 15.5 Inch C-C Of Mounting Holes* Replaces OEM # SK7501501, SK75015-01* Sold Individually* Warranty On Air Cylinder Against Defects In Workmanship & Material From Date Of...$242.99 -
Air Cylinder W/ 12 Inch C-C Mounting Holes For Jost 5th Wheel Slider
AUTOMANN USA
$240.99Air Cylinder With 12 Inch Center To Center Mounting HolesThis air cylinder offers reliable performance for your rigs Jost 5th wheel slider. Featuring a 7.572-inch cylinder and .408-inch shaft, this air cylinder is built to withstand even the toughest...$240.99 -
Smooth Aluminum Slide In Rail Air Line Box w/ 2 Air Lines For Dyna Deck Modular Deck Plate Systems
IOWA CUSTOMS
$489.99Smooth Aluminum Slide In Rail Air Line Box W/ Mounting Brackets * High Quality Slide In Rail Airline Box* Made Of Aluminum* Includes Mounting Brackets* With 2 Air Lines * (1) 7 Way Electric Plug* (1) 4/6 Way Electric Plug Hole* Fits Dyna Deck Modular...$489.99 -
Smooth Aluminum Slide-In Rail Deck Plate-18 Inch Recessed Airline Box W/ Trailer Air And 2 Holes For 7-Way Plug
IOWA CUSTOMS
$499.98Smooth Aluminum Slide-In Rail Deck Plate-18 Inch Recessed Airline Box W/ Trailer Air And 2 Holes For 7-Way Plug * High Quality Deck Plate* Made Of Smooth Aluminum* 18 Inch Width* Slide-In Rail * Recessed Airline Box * With Trailer Air * 2 Holes For 7-Way...$499.98 -
Smooth Aluminum Recessed Air Line Box W/ Flange - Hydraulic, Trailer Air, 7 Way Hookups
IOWA CUSTOMS
$492.99Smooth Aluminum Recessed Air Line Box W/ FlangeThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight aluminum with a radius bottom and a flange. The air line box has pre-cut openings for trailer hydraulic hook-ups...$492.99 -
304 SS 18 Inch Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air, One 7-Way & Hydraulic Hookup Cutouts
IOWA CUSTOMS
$550.9918 Inch 304 Stainless Steel Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air, One 7-Way & Hydraulic Hookup CutoutsOrganize connectors on the back of your truck with this 18 inch recessed air line box by Iowa Customs with pre-cut openings for...$550.99 -
Aluminum 18 Inch Recessed Air Line Box Sectionalized Deck Plate W/ Trailer Air, 7-Way, 4/6-Way Hookups
IOWA CUSTOMS
$411.9918 Inch Smooth Aluminum Recessed Air Line Box Sectionalized Deck Plate W/ Trailer Air, 7-Way, 4/6-Way HookupsOrganize connectors on the back of your truck with this 18 inch recessed air line box by Iowa Customs with pre-cut openings for trailer air, a 7...$411.99