BESTFIT TRUCK PARTS

BESTfit Day Cab Conversion Kit Fits PeterbiltThe BESTfit Day Cab Conversion Kit with Rear Window is designed for Peterbilt Unibilt trucks that need a modern, durable day cab solution. Made from...

BESTfit Replacement Bumper, Replaces N71-1001Need to replace that old bumper? BESTfit and 4 State Trucks have the quality you want at the price you can afford. Let this fiberglass bumper, upper...

Restore the look of your Freightliner M2 with this BESTfit fiberglass hood shell designed for 2008 through 2017 models. Manufactured for trucks with a 125 BBC and set-forward axle configuration, this...

Choose Option(s) to see description.Fitment* Fits Peterbilt 377 1988 thru 2000* Fits Peterbilt 378 1988 thru 2007* Fits Peterbilt 379 1987 thru 2007** Fits SFA & SBA ModelsBESTfit Fiberglass Radiator...

Choose Option(s) to see description.Fitment* Fits Kenworth W900B 1982 thru 2025* Fits Kenworth W900B 1994 thru 2025* Fits Kenworth W900L 1990 thru 2026 * Fits Kenworth W900L 1994 thru 2026BESTfit...

Replacement 2 Piece Radiator Fan Shroud* High Quality Radiator Fan Shroud* Made Of Fiberglass* Easy To Work With 2 Piece Design* Pre-Drilled Holes* Gel-Coated On The Inside For Improved Air Flow*...

Air Conditioner Orifice Tube for Automotive ReplacementOur BESTfit valves provide the same high-quality, reliable, and durable performance as factory parts. They effectively restore A/C performance...

BESTfit Aluminum Flywheel Housing, Replaces 23505073This aftermarket aluminum flywheel housing for the Detroit 60 Series incorporates SAE #1 12mm mounting holes. The starter is on the left driver's...

Coolant Reservoir With 7 Pound Cap Fits Ford F600, F700 & F800Over time coolant reservoirs become susceptible to heat and engine vibration. This coolant reservoir is manufactured and engineered with...

BESTfit Coolant Reservoir Fits Ford F600, F700 & F800* High Quality Coolant Reservoir * Made Of 11 Gauge Steel * Black Powder Coated Finish * Stainless Steel Filler Neck * Includes:  - (2) 7/16...

BESTfit Chrome-Plated Steel Y Exhaust Pipe W/ 5 Inch O.D. Inlet & OutletsElevate the exhaust system of your Freightliner or Peterbilt with the BESTfit 5 Inch O.D. Chrome Y-Pipe, a replacement for OE...

BESTfit Normally Closed Low Air Pressure Switch Opens At 70 PSI* High Quality Low Air Pressure Switch * Normally Closed* Opens At 70 PSI* Connecting Thread: 1/8-27 NTP* Connector Type: Blade*...

Freightliner Cascadia Bumper 2008 To 2018 OEM Style With Chrome Center by BESTfit* High Quality Bumper * Poly* Gray* Without Fog/Driving Light Holes* Chrome Plated Plastic Trim* Some Assembly...

BESTfit Gray Plastic Bumper W/ Chrome Trim Fits FreightlinerThis replacement gray poly bumper with chrome trim fits Freightliner Cascadia 113 and Freightliner Cascadia 125 models from 2008 to 2018...

BESTfit 14 Inch Stainless CLAD Bumper W/ Cutouts, Replaces HDR0256SSCThis high quality 14 inch Stainless Clad Aluminum Bumper with Tow, Vent, and Fog Light Holes that fits Freightliner Cascadia has...

BESTfit Aluminum Factory Style Replacement Grille InsertAre you looking for a grille insert at an affordable price? 4 State Trucks offers this factory style, BESTfit grille insert for Freightliner...

90 Degree Chrome Steel Exhaust Elbow W/ 5 Inch OD Inlet & OutletThe Century BOM Exhaust Elbow Chrome has a 5-inch OD inlet and outlet with a 90-degree bend. It includes a mounting stud for easy...

BESTfit 18 Inch Chrome Plated Steel Boxed End Texas Bumper* High Quality Bumper* Made Of 10 Gauge Chrome Plated Steel* 18 Inches Height * Standard Mount * Has Cutouts For:  - Mounting Holes  - Tow...

BESTfit 20 Inch Chrome Plated Steel Boxed End Texas Bumper* High Quality Bumper* Made Of 10 Gauge Chrome-Plated Steel* 20 Inches Height * Standard Mount * Has Cutouts For:  - Mounting Holes  - Tow...

BESTfit Charge Air Cooler Fits FreightlinerCheck out the Super Duty Charge Air Cooler for Freightliner Columbia, Century, Classic, and FLD models. It has a core size of 36.875 inches tall, 26.250...

BESTfit Chrome Plated Steel Exhaust Elbow Fits Freightliner* High Quality Exhaust Elbow* Chrome-Plated Steel* 6 Inch OD To 5 Inch OD* 90 Degree* Sold Individually* Warranty On Exhaust Elbow Against...

BESTfit 20 Inch Chrome Aero Bumper W/ Tow & Fog Light Holes Fits Freightliner FLDThis Bestfit Truck 20-inch chrome Aero bumper fits Freightliner FLD120 SBA models from 1989 to 2009. It features a tow...

Heavy Duty Radiator Core* High Quality Radiator Core* 4 Rows* Gasket Not Included* Core Size:   - 37.00 Inch Height  - 31.75 Inch Width  - 2.0625 Inch Depth* Sold Individually* Warranty On Radiator...

BESTfit AC High Pressure Switch Fits Freightliner* High Quality AC High Pressure Switch* 7/16-20 UNF Thread* Opens At 265 PSI* Closes At 180 PSI* Switch Is Normally Closed* Sold Individually*...

BESTfit V Band Clamp Replaces 01-14596-000Secure your turbo setup with the Turbo Housing V Band Clamp, designed to fit select Freightliner, Peterbilt, and Volvo models. This USA-made clamp is...

Fuel Sender W/ OE Style Plug By BESTfitMaintain accurate fuel level readings with this high-quality Fuel Sender designed to replace Q21-1024-559 for Kenworth trucks with 22-inch diameter fuel tanks...

BESTfit Lighted Green On/Off Rocker Switch* High Quality Rocker Switch* Includes:  - On/Off Buttons  - Light* Green Buttons* Black Switch* Sold Individually* Warranty On Rocker Switch Against Defects...

BESTfit Headlamp Wiring Harness W/ Floor Dimmer SwitchThis high quality hood wiring headlamp harness with the floor dimmer switch that fits the Peterbilt 359 model includes factory style bullet and...

Heavy Duty Plastic Wiper NozzleDirect replacement black wiper nozzle fits Freightliner Cascadia models. Matches OEM part F88171801 for proper washer fluid spray pattern and function.* High Quality...

Designed for demanding cooling system applications, the BESTfit heavy-duty silicone coolant hose offers a dependable solution. This aftermarket replacement hose is constructed from quality silicone...

20.25 Inch C To C 90 Degree Bent Linkage Kit* High Quality Linkage Kit * 20.25 Inch Length C To C* 90 Degree Bent Linkage* Sold Individually * Warranty On Linkage Kit S Against Defects In Workmanship...

Volvo Helper Spring Bracket* High Quality Helper Bracket* Rear Spring* Sold Individually* Warranty On Helper Brackets Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BESTfit NC Type High Pressure Switch With Wire Harness & Female 1/4 Inch Thread* High Quality High Pressure Switch* Application: Multi Fit Applications* Description: High Pressure Switch -Nc* Wire...

Black Hood Bushing* High Quality Bushing* Sold Individually* Warranty On Bushings Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...

Replace damaged hood hardware with this Hood Hinge Pivot Assembly, designed as a direct replacement for OE part L48-6042 on select Peterbilt 579 models from 2013 through 2021. Built as a high-quality...

Heavy-Duty Replacement Hood Latch for Secure Hood ClosureThis hood latch assembly is designed to provide a secure and dependable hood closure for both Peterbilt and Kenworth truck applications. Built...

Does the latch on your Freightliner hood need replacing? 4 State Trucks have the quality replacement hood latches that will make sure your hood stays put.This secure latch mounts to the hood of a...

Freightliner Classic Hood Latch Kit* High Quality Hood Latch Kit* Includes:  - Hood Latch   - Hood Latch Bracket * 2 Kits Required Per Truck* Sold Individually* Warranty On Hood Latch Kit Against...

BESTfit Blower Motor With OE Style Plug Fits Peterbilt 359Ensure consistent airflow and reliable climate control in your truck's cab with the BESTfit HVAC Blower Motor, designed to replace part...

Incandescent Amber Turn Signal Light Fits Mack CH* High Quality Turn Signal Light* Made Of Plastic* Bulb Not Included* Amber Colored Lens* No Special Tools Required* Manufactured To Strict...

Improve the look of your truck with the Inner Fender Extension With Cutout, designed to add a clean custom appearance. Built for heavy-duty truck applications, this aftermarket extension panel...

BESTfit 5 Inch Aluminized Multi-Bend Exhaust Elbow With Flattened Area* High Quality Exhaust Elbow* Aluminized Steel * Multi-Bend Exhaust Elbow For International* 5 Inch OD/OD * Fits Bottom of the...

BESTfit 1 Piece Economy Stainless Steel Grille Surround Insert4 State Trucks offers this original style surround designed to restore the look of your grille at an affordable price. Fit for trucks...

BESTfit Aluminized Steel Exhaust U-Pipe W/ 5 Inch I.D. & 6 Inch I.D.Swap out your muffler with an exhaust U-pipe for select International models. Made from durable aluminized steel, it transitions...

BESTfit Aluminized Steel Multi-Bend Turbo Elbow Fits International DurastarThis high quality multi-bend turbo elbow that fits International 4100, 4200, 4300, and 4400 DuraStar models and mounts...

BESTfit Chrome-Plated Steel 14 Inch Bumper W/ Vent/Side Holes For International 4100-4300/8600This high quality 14 inch chrome Bumper with Bolt, Vent, and Tow Holes fits International DuraStar,...

BESTfit Steel Exhaust Y-Pipe W/ 5 Inch OD Inlet & Outlet, Replaces K180-18613* High Quality Exhaust Y-Pipe* 2 Bends* Made Of Aluminized Steel* 5 Inch OD/OD/OD* Fits Early Aerocab With Single Muffler...

BESTfit Exhaust Y Pipe Fits KenworthThis high quality 5 inch exhaust y-pipe is for trucks with BOM elbows mounted above the frame. The y-pipe has a 5 inch inlet and outlet and comes with a 1 year...

BESTfit Kenworth Replacement Hood Support BushingThis durable polyurethane Quality Support Bushing reuses the original bracket. Each package includes one bushing, and the color may vary. You'll need...

BESTfit Motor Mount Rear Bushing KitThis motor mount rear bushing kit is designed for Kenworth models with CAT engines. It includes 2 Upper Mounts, 2 Lower Mounts, and hardware for both sides on the...

BESTfit Steel Multi Bend Turbo PipeThis Turbo multi-bend pipe is made of a quality aluminized steel and is precut with an opening for a pyrometer probe. It has a 5 inch flanged inlet and a 5 inch OD...

BESTfit Trinary Switch Port Expansion Valve With 2 Ton Capacity Fits Kenworth* High Quality Block Style Expansion Valve* Inlet: Hose Side In #6/Out: #10 Female Insert O'Ring* Rating: 2 Ton* Port...

AeroCab Exhaust Bushing Kit Fits KenworthGet what you need to fix your Kenworth Exhaust at 4 State Trucks. This BESTfit Exhaust bushing kit includes a bushing, a sleeve, a bolt, a nut, and flat...

BESTfit Driver Side Chrome-Plated Steel Exhaust Elbow W/ 5 Inch I.D. & 5 Inch O.D.This high quality 5 inch BOM exhaust elbow that fits trucks with an above the frame exhaust and is located on the...

BESTfit 14 Inch Aero Style Bumper W/ Vent, Tow & Fog Light Holes Fits Kenworth T-660Replace a factory-style two-piece bumper with this one-piece Aero Style Bumper. Featuring tow and fog light holes,...

BESTfit Mirror Set Fits Kenworth* High Quality Mirror Set* Made Of Stainless Steel* Made In North America* Sold As Set* Warranty On Mirror Set Against Defects In Workmanship & Material From Date Of...

BESTfit Kenworth T800 14 Inch Chrome-Plated Steel Single Break Back Bumper W/ Straight Opened Ends* High Quality Bumper* Made Of 10 Gauge Chrome Plated Steel* 14 Inch Height* Single Break Back With...

BESTfit 14 Inch Chrome-Plated Steel Single Break Back Bumper W/ Tapered Opened Ends, Mounting, Tow and Vent Holes For Kenworth T800 & T880 2004-Newer* High Quality Bumper* Made Of 10-Gauge Chrome...

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.*...

BESTfit Fiberglass Fan Shroud Fits Kenworth - Replaces F22-1022-1/F22-1006-01/K216-1976/F22-1037This high quality fan shroud fits select Kenworth T600, T600B, and T800 models. It is gel-coated on the...

BESTfit Exhaust Tee Fits Kenworth* High Quality Exhaust Tee* Aluminized Steel* 5 Inch Diameter * 3 Bend* For Installing Straight Pipes Or Quiet Spools* Sold Individually* Warranty On Exhaust Tee...

BESTfit Type 3 Muffler 10 x 15 Inch Oval 26 Inch Body 5 Inch Inlet OutletThis single muffler easily fits under your truck with a compact size of 10 inches in height, 15 inches in width, and 26 inches...

BESTfit Wiper Conversion Kit Fits KenworthConvert your air wiper motor to electric with this wiper conversion kit. It fits Kenworth W900A models built from 1965 through 1982 with single wiper arms on...

BESTfit Replacement Fiberglass Headliner InsertThe Economy Fiberglass Original Style Replacement Interior Headliner is an ideal option for Kenworth W900A owners looking to refresh their cab's ceiling...