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 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 -
BESTfit 2 Leaf 4 Inch Wide Parabolic Spring Replaces TTN12144, 1670556C91, 574696C9 For Volvo VNL Gen II
BESTFIT TRUCK PARTS
$387.99BESTfit Leaf Spring - Replaces 20QE3126, 20QE3126P2, 03-06212 & 3130560The 2 Leaf Parabolic Spring, characterized by its parabolic spring type and two leaves, features standard eye types on both ends. It boasts a width of 4 inches, with a spring eye (S.E...$387.99 -
BESTfit 3/4 X 4 X 8.875 Inch U-Bolt Kit Replaces 680-322-07-25 & K241-309 For Volvo
BESTFIT TRUCK PARTS
$44.05BESTfit 3/4 X 4 X 8.875 Inch U-Bolt Kit Fits VolvoThe U Bolt Kit features a square bend design with Grade 8 specifications, boasting a 3/4-inch diameter for robust fastening. Its dimensions include a width of 4.000 inches and a length of 8.875 inches,...$44.05 -
BESTfit Air Spring For AG100 Kenworth Suspension - Replaces K303-16
BESTFIT TRUCK PARTS
$172.99BESTfit Air Bag Fits AG100 8 Bag Air Suspensions For KenworthThe Air Spring is engineered with a maximum height of 11.40 inches and features threads of 1/4 - 18 NPTF and 1/2 - 13 UNC. It boasts center-to-center measurements of 5.69 inches and 4.12 inches...$172.99 -
BESTfit 6.25 Inch Aluminum Rear Steer Spring Hanger For 4 Inch Spring Replaces 02-02311M001 For Peterbilt 379
BESTFIT TRUCK PARTS
$173.99BESTfit Spring Hanger For 4 Inch Spring Fits Peterbilt 379The Spring Hanger is designed for either the driver or passenger side and is positioned at the rear of the front suspension. It accommodates a 4.0-inch spring with a bolt height of 6-1/4 inches...$173.99 -
BESTfit Single Leaf Z Spring With 5 Hole Shock Bracket Mount For International Rear Z 3.5 Inch Air Spring
BESTFIT TRUCK PARTS
$534.99BESTfit Single Leaf Z Spring Fits International - Replaces 501566C93The Z Spring, featuring a Z spring type design with no spring eye, has dimensions specified for both the spring eye (S.E./L.E.) and the width. The S.E. (spring eye) measures 25-3/4...$534.99 -
On Sale
BESTfit 7/8 X 3.5 X 15 Inch Semi-Round U-Bolt Kit Replaces 1610312C2 For International Rear Z 3.5 Inch Air Spring
BESTFIT TRUCK PARTS
Now: $37.73Was: $53.90BESTfit U-Bolt Kit Fits InternationalThe U Bolt Kit features semi-round bend U bolts made of Grade 8 material, with a diameter of 7/8 inches, a width of 3.500 inches, and a length of 15.000 inches. Sold as a convenient kit, this aftermarket replacement...Now: $37.73Was: $53.90 -
BESTfit 3/4 X 3.5 X 13.25 Inch Semi-Round U-Bolt Kit For International Rear Z 3.5 Inch Air Spring
BESTFIT TRUCK PARTS
$36.97BESTfit U-Bolt Kit Fits International - Replaces 586593C1, 590575C1 & 590621C1 * High Quality U Bolt Kit* U Bolt Type Semi-Round Bend* Grade 8* U Bolt Diameter 3/4 Inch* Width 3.500 Inch* Length 13.250 Inch* Sold As Kit* Warranty On U Bolt Kits Against...$36.97