Frame & Chassis

BESTfit 40 Inch Aluminum Battery/ Tool Box Lower Step-Replaces K229-1209-2At 4 State Trucks, we offer this 40 inch BESTfit replacement lower step panel for a Kenworth Battery/toolbox. It is constructed of durable aluminum with tread to reduce slippage...

BESTfit 5.75 Inch C-C Threaded Spring Pin Fits Kenworth K100, T300, T450, T600, T800 & W900* High Quality Threaded Spring Pin* 7.375 Inch Overall Length* 5.75 Inch Center To Center* 1.5 Inch OD* 1.375 Inch 6 Thread* Sold Individually* Warranty On...

BESTfit Upper Step Panel Fits Kenworth* High Quality Step Panels* Made Of Aluminum* 45 Inch Length * For Battery And Tool Box Covers* Sold Individually* Warranty On Step Panels Against Defects In Workmanship & Material From Date Of Purchase***High...

BESTfit Battery Box Fits KenworthProtect your battery with this great looking diamond plate aluminum battery box. It comes as a complete assembly and has a solid center step for convenience. It is made in North America and is sold individually.* High...

BESTfit Parabolic Steer Axle Leaf Spring* High Quality Parabolic Steer Axle Leaf Spring* 4 Inch OAL* 1.75 O.D.* 1 3/8 Inch * 6 Threads* Sold Individually * Warranty On Parabolic Steer Axle Leaf Spring Against Defects In Workmanship & Material From Date...

BESTfit Aluminum Complete Battery Box With Diamond Plate FinishLooking for an affordable battery box cover that can withstand the wear and tear of being on the road? 4 State Trucks offers this durable and rust resistant 40-inch BESTfit Kenworth style...

27 x 17.5 x 18 Inch Fiberglass Battery Box Cover* High Quality Battery Box Cover* Fiberglass* 27 Inch Length * 17.5 Inch Width* 18 Inch Height * Sold Individually* Warranty On Battery Box Covers Against Defects In Workmanship & Material From Date Of...

BESTfit 3.53 Inch Center To Center X 2 Inch Wide Aluminum Side Bar Fits Kenworth T300* High Quality Side Bar* Aluminum* 5.92 Inch Overall Length* 3.53 Inch Center To Center* 2 Inch Wide* 1.25 Inch Pin Hole* Sold Individually* Warranty On Side Bar Against...

BESTfit 5.063 Inch C To C Side Bar W/ 1/2 Inch Offset Replaces K20955, K20954, K20984* High Quality Side Bar* Dimensions:  - 7.50 Inch Length - 2.00 Inch Width - 5.063 Inch C To C - 1.125 Inch Height* Hole Size- 1.063 Inch* Lock Hole-...

BESTfit Shock Bracket Stud* High Quality Shock Bracket Stud* Lower* T2000 Front* M16 - 2.00 Thread* M20 - 2.50 Thread* 220.50MM Overall Length* Sold Individually* Warranty On Shock Bracket Studs Against Defects In Workmanship & Material From Date Of...

BESTfit 34 x 9 1/2 Inch Step Panel For Lower Battery/ Tool BoxAt 4 State Trucks, we offer this 34 inch BESTfit replacement lower step panel for a Kenworth battery/toolbox. It is 9.5 inches wide and constructed of durable aluminum with tread to reduce...

BESTfit Battery Box Cover Fits KenworthThis battery box cover is built from durable diamond-plated aluminum and measures 34 inches in length. It's tough, reliable, and ready to protect your battery.* High Quality Battery Box Cover* Made Of Diamond Plated...