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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On Sale
CSM Mounting Kit For CSM 18 x 18 x 48 Inch Toolboxes
CHROME SHOP MAFIA
Now: $178.49Was: $254.9918 x 18 x 48 Inch Tool Box Mounting Kit W/ Bottom & Triangle Side Supports By Chrome Shop Mafia * High Quality Mounting Kit* Made Of Black Powder Coated Steel* 18 Inch X 18 Inch X 48 Inch * 1 Piece Bottom And Triangle Side Supports* Made In USA* Sold...Now: $178.49Was: $254.99 -
On Sale
CSM Mounting Kit For CSM 18 x 18 x 36 Inch Toolboxes
CHROME SHOP MAFIA
Now: $160.06Was: $234.9918 x 18 x 36 Inch Tool Box Mounting Kit W/ Bottom & Triangle Side Supports By Chrome Shop Mafia * High Quality Mounting Kit* Made Of Black Powder Coated Steel* 18 Inch X 18 Inch X 36 Inch * 1 Piece Bottom And Triangle Side Supports* Made In USA* Sold...Now: $160.06Was: $234.99 -
20 x 18 x 36 Inch Aluminum Underbody Truck Box W/ Drawer
AFTERMARKET
$951.99Diamond Tread Underbody Truck Box W/ Drawer * High Quality Truck Box* Diamond Tread Aluminum* Dimensions- 20 Inch Height - 18 Inch Depth- 36 Inch Width * Can Be Mounted On Either A Flat Surface Or Under-Bed* Requires Mounting Brackets Sold Separately*...$951.99 -
Smooth Aluminum 18 Inch Wide Big Mount Step Box
ICONIC
$599.9918 X 24 X 39.13 Inch Aluminum Big Mount Step Box * High Quality Big Mouth Step Box* Aluminum* 18.00 Inch Wide* 24.00 Inch Height* 29.13 Inch Depth* With Smooth Aluminum Lid * 50 Percent Larger Opening Than Traditional Step Boxes Allows You To Store More...$599.99 -
22 Inch Smooth Aluminum Big Mouth Step Box W/ Lid
ICONIC
$639.88Big Mouth 22 X 24 Inch Smooth Aluminum Step Box * High Quality Step Box* Made Of Smooth Aluminum With Smooth Aluminum Lid* 22 Inch Wide* 24 Inch Height* 29.13 Inch Depth* Recommended 09-0210100007 Mounting Bracket - Not Included* 50 Percent Larger...$639.88 -
Brunner 36 Inch Black Integrated Step Box Brackets
BRUNNER FABRICATION
$183.99Black Integrated Step Box Brackets By Brunner?s Fabrication By Brunner Fabrication * High Quality Integrated Step Box Brackets* Black* 36 Inch* Sold As Pair * Warranty On Integrated Step Box Against Defects In Workmanship & Material From Date Of...$183.99 -
Brunner 36 X 22 X 26 Inch Black Passenger Side Integrated Step Box W/ Stainless Steel Door
BRUNNER FABRICATION
$1,737.99Passenger Side 36 X 22 X 26 Inch Black Integrated Step Box W/ Stainless Steel Door By Brunner?s Fabrication By Brunner Fabrication * High Quality Integrated Step Box * Painted Black * With 3 Stainless Steel Door* Passenger Side* 36 X 22 X 26 Inches* Sold...$1,737.99 -
Brunner 36 X 22 X 26 Inch Black Driver Side Integrated Step Box W/ Stainless Steel Door
BRUNNER FABRICATION
$1,737.99Driver Side 36 X 22 X 26 Inch Black Integrated Step Box W/ Stainless Steel Door By Brunner?s Fabrication By Brunner Fabrication * High Quality Integrated Step Box * Painted Black * With 3 Stainless Steel Door* Driver Side* 36 X 22 X 26 Inches* Sold...$1,737.99 -
Black Steel Trailer Tongue Truck Tool Box 16.38 X 15 X 35.25/21.25 Inch
AFTERMARKET
$363.9916.38 X 15 X 35.25/21.25 Inch Black Steel Trailer Tongue Truck Tool BoxAdd more storage to your A-Frame Trailer with this Black Steel Trailer Tongue Truck Tool Box. ts heavy-duty steel construction, tapered front, locking stainless steel paddle latch,...$363.99 -
Diamond Plate Aluminum Trailer Tongue Truck Box W/ Angled Front 18.5 X 15 X 49 Inch
AFTERMARKET
$442.9918.5 X 15 X 49 Inch Diamond Plate Aluminum Trailer Tongue Truck Box W/ Angled FrontThis Diamond Tread Aluminum Trailer Tongue Truck Box is built tough to mount to A-frame style trailers. It keeps your gear safe from weather and theft with a locking...$442.99 -
Diamond Plate Aluminum Trailer Tongue Truck Box 15 X 14.5 X 34/22.5 Inch
AFTERMARKET
$365.9915 X 14.5 X 34/22.5 Inch Diamond Plate Aluminum Trailer Tongue Truck BoxThis Diamond Tread Aluminum Trailer Tongue Truck Box is built for A-frame style trailers. It's tough yet lightweight with a weather-resistant design. Locking stainless steel paddle...$365.99 -
Gloss Black Diamond Plate Aluminum 72 Inch Topside Truck Tool Box W/ Double Doors
AFTERMARKET
$1,071.9572 Inch Gloss Black Diamond Plate Aluminum Topside Truck Tool Box W/ Double Doors * High Quality Tool Box* Made Of Diamond Plated Aluminum* Gloss Black Powder Coat Finish* Features- 72 Inch Length Top- 72 Inch Length Bottom- 17 Inch Height- 13.685 Inch...$1,071.95