
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 Aluminum Bracket For Kenworth 8 Bag Suspension
BESTFIT TRUCK PARTS
$44.47BESTfit 8 Bag Air Suspension BracketUpgrade your vehicle's air suspension system with our 8 Bag Air Bracket! Crafted from lightweight and durable aluminum, this bracket ensures reliable support for your air suspension components. Sold individually as an...$44.47 -
BESTfit Air Bag Adapter Driver Side Replaces K129-500 For Kenworth
BESTFIT TRUCK PARTS
$90.88BESTfit Air Bag Adapter Fits KenworthUpgrade your vehicle's air bag system with our Driver Side Air Bag Adapter! This aftermarket replacement part replaces OEM # K129-500 and is sold individually. Crafted for durability and reliability, it ensures safety...$90.88 -
BESTfit Spring Hanger For Peterbilt 362, 377, 378 & 379
BESTFIT TRUCK PARTS
$134.99BESTfit Peterbilt Spring Hanger Replaces 02-01800M001, 3381230Upgrade your vehicle's suspension with our Spring Hanger! Positioned at the rear of the steer axle, this hanger fits both driver and passenger sides. Specifically designed for 4-inch springs,...$134.99 -
BESTfit Spring Hanger For Peterbilt 352, 359 & 362
BESTFIT TRUCK PARTS
$107.99BESTfit Steer Axle Spring Hanger Fits PeterbiltUpgrade your vehicle's suspension with our Spring Hanger! Designed for the rear of the steer axle and compatible with both driver and passenger sides, this hanger is specifically crafted for 3.5-inch springs...$107.99 -
BESTfit Air Bag Replaces K303-22 For Kenworth
BESTFIT TRUCK PARTS
$200.99BESTfit Air Bag Fits KenworthIntroducing our Air Bag, available individually as an aftermarket replacement part, not OEM. This air bag replaces OE Number K303-22, ensuring a perfect fit for your vehicle. Trust in our quality replacement part for reliable...$200.99 -
BESTfit Fiberglass Battery Box Cover For International DuraStar, TerraStar, TranStar & 4100-4400
BESTFIT TRUCK PARTS
$154.99BESTfit Battery Box Cover Fits InternationalUpgrade your vehicle with our aftermarket replacement part, crafted from durable fiberglass for enhanced durability and longevity. Designed to replace original equipment plastic covers, this component ensures a...$154.99 -
BESTfit Air Bag W013586897 Double Convoluted Air Spring For Watson/Chalin, Ridewell Suspensions
BESTFIT TRUCK PARTS
$110.99BESTfit Double Convoluted Air Spring For Ridewell, Watson & Chalin SuspensionsIntroducing our Double Convoluted Air Spring, designed to meet your suspension needs with precision and reliability. Crafted with quality materials, this air bag boasts...$110.99 -
BESTfit Suspension Leveling Valve For Air Ride Suspensions - Replaces HV9990
BESTFIT TRUCK PARTS
$71.80BESTfit Suspension Leveling ValveGet your air ride suspension system back in top shape with our Air Leveling Valve, designed specifically for air ride suspensions. This Barksdale Type Height Control Valve is sold individually as an aftermarket...$71.80 -
BESTfit Air Bag - Replaces W013588008
BESTFIT TRUCK PARTS
$243.99BESTfit Air BagUpgrade your vehicle's suspension with our quality air bag. Designed for durability and performance, this aftermarket replacement part offers reliable support and enhanced ride comfort. Sold individually, it's the perfect solution for...$243.99 -
BESTfit Adjustable Linkage Kit With Rod For Air Level Valves
BESTFIT TRUCK PARTS
$14.37BESTfit Height Control Valve Linkage And Rod Kit, Replaces 03-05180Upgrade your height control valve system with our Adjustable Linkage Kit, meticulously engineered for optimal performance and versatility. This kit includes an 18-inch rod with ends and...$14.37 -
Kenworth AG100 BESTfit Trunnion Steel Suspension Center Hanger For Air Ride Suspension
BESTFIT TRUCK PARTS
$308.99BESTfit Suspension Center Hanger Frame Bracket Fits KenworthUpgrade your suspension system with this durable Suspension Center Hanger, engineered to fit the AG100 Air Ride Suspension. Crafted from robust steel, this hanger ensures reliable support and...$308.99 -
Freightliner BESTfit Suspension Air Spring For AirLiner II Suspension
BESTFIT TRUCK PARTS
$143.99BESTfit Freightliner Commercial Truck Air Spring With Mountable Top PlateThe "Air Bag With Plastic Piston" is a suspension component sold individually. This aftermarket replacement part is not from the original equipment manufacturer (OEM). It offers an...$143.99