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 Shock Absorber For Peterbilt With Air Leaf & Air Trac Suspension
GABRIEL
$65.99BESTfit Shock Absorber Fits PeterbiltEnhance your ride with our shock absorber, designed for superior performance and durability. With a 1.625-inch bore and 9.160-inch stroke, this shock absorber provides reliable support for your vehicle. Its 14.79-inch...$65.99 -
BESTfit 24 Inch Torque Rod Replaces K195375, K195C374, 358010004 For Kenworth
BESTFIT TRUCK PARTS
$166.99BESTfit 24 Inch Torque Rod Fits KenworthUpgrade your vehicle's suspension system with our aftermarket torque rod, designed to deliver exceptional performance and durability. With a length of 24 inches (center to center), this torque rod ensures precise...$166.99 -
BESTfit Torque Arm Mount Bracket Replaces K055-405 For Kenworth AG100 Suspension
BESTFIT TRUCK PARTS
$46.91BESTfit Torque Arm Mount Bracket Fits KenworthUpgrade your air suspension system with our aftermarket replacement bracket, designed for a 2-inch standout. Sold individually, this bracket offers durability and reliability without the OEM price tag...$46.91 -
BESTfit Air Bag Replacement For Gen III Air Ride Suspension
BESTFIT TRUCK PARTS
$176.99BESTfit 12 Gauge Air Bag ReplacementUpgrade your air ride system with our Air Bag Replacement. It's made to last and fits perfectly with dimensions like 3.90 inches minimum height and 11.40 inches maximum diameter. You'll find it easy to install thanks...$176.99 -
BESTfit Wear Plate With 5/8 Inch Mounting For Peterbilt Air Trac Suspension
BESTFIT TRUCK PARTS
$99.99BESTfit Peterbilt Wear Plate With 5/8 Inch MountingEnhance the performance and longevity of your Air Trac Suspension with our Wear Plate. Featuring a 5/8-inch mounting design, this plate comes complete with one wear pad and all necessary mounting...$99.99 -
BESTfit Spring Eye Bushing For Peterbilt Air Leaf Suspensions
BESTFIT TRUCK PARTS
$7.68BESTfit Spring Eye Bushing Fits Peterbilt Air Leaf SuspensionsEnsure smooth operation and stability for your air leaf models with our Eye Bushing kit. Each kit includes essential components like a spring eye sleeve, compression washers, a lock nut,...$7.68 -
BESTfit Air Bag For Mack Maxlite 40 EZ Air Ride & Volvo Air Ride Suspensions W01-358-8829
BESTFIT TRUCK PARTS
$165.99BESTfit Air Bag Fits Mack And VolvoUpgrade your rear suspension system with our premium Air Bag, designed for optimal performance and durability. Sold individually, this aftermarket replacement part (not OEM) is engineered to replace OE numbers 1R12-595,...$165.99 -
BESTfit 4 Inch Spring Pin Double Lock Replaces Peterbilt 02-01767, 02-01781 & Kenworth K179-527
BESTFIT TRUCK PARTS
$13.25BESTfit Spring Pin Double Lock Fits Peterbilt & KenworthOur double lock, designed to fit 4-inch springs, offers enhanced security and durability for your vehicle's suspension system. With precise measurements of 8.859 inches, including lock notches at 5...$13.25 -
BESTfit 1.5 X 1.25 X 3.5 Inch Bronze Spring Bushing For Steer Spring Replaces 02-01848, MPB58 For Peterbilt 359
BESTFIT TRUCK PARTS
$27.53BESTfit Bronze Steer Spring Bushing Fits Peterbilt 359 With 3.5 Inch SpringUpgrade your vehicle's steer spring with our Bronze Spring Bushing! This aftermarket replacement part is designed specifically for a 3.5-inch spring, with dimensions of 1.5 inches...$27.53 -
BESTfit Spring Hanger Rear Of Steer Axle For Peterbilt
BESTFIT TRUCK PARTS
$65.13BESTfit Steer Axle Rear Spring Hanger Fits PeterbiltUpgrade your vehicle's suspension with our Spring Hanger, suitable for the rear of the steer axle on either the driver or passenger side! Designed for use with a 4-inch spring, this aftermarket...$65.13 -
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