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    What Is DEF on a Semi Truck? Fluid, Filters, Problems & Maintenance(Post)

    What Is a DEF (Diesel Exhaust Fluid) Filter? A DEF (Diesel Exhaust Fluid) filter protects the SCR (Selective Catalytic Reduction) system by removing dirt, debris, and contaminants from the DEF supply

    What Does the FASS Fuel System Do? (Post)

    Diesel fuel often contains air, vapor, water, and fine debris - harmful contaminants that hurt fuel pressure stability, injector life, and injection pump health. FASS (fuel air separation system) help

    Buyers Guide to Aftermarket Air Breather Panels(Post)

    Decorative light panels are an outstanding way to start personalizing your truck. Air breather panels offer tremendous visual appeal and can elevate your big rig's nighttime appearance. There are five

    Semi Truck DPF Systems: How They Work, Problems, Regeneration & Parts(Post)

    Let’s break down how to maintain peak emissions performance and avoid excessive repairs on big truck exhausts. Key Takeaways DPFs trap soot, while DEF reduces harmful nitrogen oxide emissions. Watch

    What Year Did Semi Trucks Get DPF Systems?(Post)

    When Did Semi Trucks Start Using DPF Systems? EPA Rules Explained Diesel particulate filters (DPFs) became standard equipment on new U.S. heavy-duty diesel trucks starting with the 2007 engine model y

    How to Winterize a Semi Truck: The Complete Driver Checklist(Post)

    Cold winter weather, freezing temperatures, snow-covered roads, and adverse weather conditions wreak havoc on semi truck engines and equipment, and can lead to costly repairs if damage occurs. Don’t c

    Spare Semi Truck Parts Every Owner-Operator Should Keep(Post)

    For owner-operators, having the right spare parts on hand is the difference between experiencing devastating downtime and productive uptime. You don’t want to be caught on the side of the road waiting

    Seasonal Semi Truck Maintenance Checklist(Post)

    Freezing winter weather temperatures, heavy snow, ice, and road salt take an unseen toll on your semi truck. Corrosion directly affects your semi truck brakes, electrical terminals,  suspension mounts

    Preventative Maintenance Checklist for Semi Trucks(Post)

    In this post, we’ll cover the need for a semi truck preventative maintenance checklist, and some of the common replacement parts you can buy online and ship directly to your specified address. Key Ta

    Best Semi Truck Emergency Kit Accessories to Deter Roadside Breakdowns(Post)

    It’s cold, and late, and you’re suddenly stalled at the side of the road because your semi truck won’t start or won’t budge. If this sounds like a truck driver’s worst nightmare, it’s because it is. 

    Wet Line Kits for Semi Trucks 101: The Basics Explained(Post)

    Ready to transform your rig into a hydraulic powerhouse? A semi-truck wet line kit can do the trick. One of these will turn your truck from a normal highway hauler into a workhorse capable of handlin

    CB Radios Ultimate Guide(Post)

    “10-4 Roger.” Despite the rise of messaging apps, GPS devices with voice-activated messaging, and push-to-talk (PTT) apps, the classic CB radio remains among the most trusted and well-used accessorie

    What Should Be in a Semi Truck Emergency Kit? (Free PDF Checklist for Drivers)(Post)

    Semi-truck breakdowns cost money and time; but they aren't inevitable. With the right emergency accessories, truck drivers can minimize costly delays, tackle minor repairs on the fly, and safely power

    How A/C Driers Work on Your Semi Truck(Post)

    Ever wondered why your semi truck’s AC runs smoothly, or why it suddenly stops working? Your A/C receiver, drier, or accumulator is the unsung heroe of your commercial vehicle.  Maintaining your A/C d

    What are the Most Frequently Replaced Semi Truck Parts?(Post)

    The parts of a class 8 truck that see the most frequent repair and replacement are areas where tons of heat, friction, and pressure occur. No-brainer, right?  Here are some of the most frequently repl

    Top 10 Semi Truck Winter Accessories for Heavy-Duty Drivers(Post)

    Winter truck driving can be downright trecherous to haul payloads in, especially when you don't have the right winter-ready trucker gear to get you through difficult drives in below-freezing temperatu

    Diesel Truck Engine Maintenance Guide(Post)

    Semi truck engines can last up to one million miles, or more, before they need to be rebuilt or replaced.  During their lifespan, engine system parts experience a lot of heat and pressure, eventually

    Haul of Fame: The Murder Pete Truck(Post)

    They call it the Murder Pete. Blacked-out, rugged, and raw, it’s a notorious big rig known for its “murdered out” style. Supported by the custom fab shop work of Chrome Shop Mafia (CMS) and supplied w

    Semi Truck DPF Box Covers & Slipcovers: Fitment Guide(Post)

    Semi Truck DPF Box Covers: Types, Fitment & Replacement What Is a DPF Box Cover on a Semi Truck? DPF box covers are exterior panels designed to conceal or protect the aftertreatment housing. They do n

    Spring Semi-Truck Maintenance: 5 Checks to Prevent Expensive Repairs(Post)

    Winter weather causes corrosion, contamination, wear, and hidden damage. Spring is a great time to inspect the truck thoroughly and stop small problems from becoming giant disasters.  Five Spring Main

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  • Stainless Steel Diesel Particulate Filter Replaces 290-0045, 301-7856, 10R-6088 For Caterpillar C13, C15 Engines

    Stainless Steel Diesel Particulate Filter Replaces 290-0045, 301-7856, 10R-6088 For Caterpillar C13, C15 Engines

    GLOBAL EMISSIONS

    $4,279.99
    Stainless Steel Diesel Particulate Filter Fits Caterpillar C13 & C15 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold...
    29-080600021
    SKU:
    29-080600021
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $4,279.99
    Qty in Cart: 0
    Price:
    $4,279.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Steering Wheel Horn Pad/Spacer 3 X 1.5 Inch C To C For Peterbilt Flat Top Cab Replaces 18-02905

    BESTfit Steering Wheel Horn Pad/Spacer 3 X 1.5 Inch C To C For Peterbilt Flat Top Cab Replaces 18-02905

    BESTFIT TRUCK PARTS

    $22.30
    Steering Wheel Horn Pad/Spacer 3 X 1.5 Inch C To C By BESTfit Replaces 18-02905The BESTfit Air Horn Horn Pad / Spacer is an essential component for Peterbilt flat top cabs, designed to securely space...
    1802905
    SKU:
    1802905
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    Cab Style:
    Flat Top
    $22.30
    Qty in Cart: 0
    Price:
    $22.30
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Horn Pad 1802906 For Peterbilt 375, 377, 378 & 379

    Air Horn Pad 1802906 For Peterbilt 375, 377, 378 & 379

    OPP - ORIGINAL PARTS PROGRAM

    $69.99
    Peterbilt Angled Air Horn Mount - Angled SpacerNeed to mount your air horn at an angle? Check out this handy Angled Spacer (18-02906). It's perfect for getting the right position and making sure your...
    1802906
    SKU:
    1802906
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $69.99
    Qty in Cart: 0
    Price:
    $69.99
    Subtotal:
  • Intake Pre-Filter For LAF3551 Air Filter

    Intake Pre-Filter For LAF3551 Air Filter

    FREEDOM AIR FILTERS

    $76.99
    Intake Pre-Filter For P153551 Air Filter* High Quality Polyester Mesh Pre-Filter* This Is A Pre-Filter Wrap That Covers The Air Filter Element. Air Filter Element Not Included. Sold Separately.* Fits...
    09-0723000
    SKU:
    09-0723000
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Make:
    Western Star
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $76.99
    Qty in Cart: 0
    Price:
    $76.99
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  • BESTfit Plastic Aluminum Radiator W/ Frame 27.5 X 25.125 X 2 Inch 2 Row Replaces 238644, 1004040 For Thomas Bus, Freightliner M45 & M55

    BESTfit Plastic Aluminum Radiator W/ Frame 27.5 X 25.125 X 2 Inch 2 Row Replaces 238644, 1004040 For Thomas Bus, Freightliner M45 & M55

    BESTFIT TRUCK PARTS

    $1,676.99
    Radiator W/ 2 Inch Inlet & 2 Inch Outlet By BESTfit Replaces 238644, 1004040Protect your engine from overheating with the BESTfit Plastic Aluminum Radiator with Oil Cooler, designed for Thomas Bus...
    03-070290
    SKU:
    03-070290
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Freightliner
    Product Type:
    Engine Parts
    Length Options:
    2 Inch
    Width Options:
    25 Inch
    Height Options:
    27 Inch
    Make:
    Bus
    $1,676.99
    Qty in Cart: 0
    Price:
    $1,676.99
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  • Stainless Cab Panels W/ 12 Round 3/4 Inch Amber/Amber LEDs, Block Heater Plug For Kenworth T800, W900

    Stainless Cab Panels W/ 12 Round 3/4 Inch Amber/Amber LEDs, Block Heater Plug For Kenworth T800, W900

    PHOENIX DESIGN

    $293.99
    Stainless Cab Panels W/ 12 Round 3/4 Inch Amber LED Amber Lens Lights, Block Heater Plug Fits Kenworth T800 & W900* High Quality Cab Panel* Made Of 304 Stainless Steel* 6 - 3/4 Inch Round Lights Per...
    02-091200290
    SKU:
    02-091200290
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Light Options:
    With Lights
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Finish Options:
    Paintable
    Length Options:
    52 Inch
    Product Type:
    Exterior
    $293.99
    Qty in Cart: 0
    Price:
    $293.99
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  • 2.5 Inch Stainless Steel Cab Panels W/ 12 Amber/Amber P3 LEDs W/ Hole For Block Heater For Peterbilt 567 121BBC SFA

    2.5 Inch Stainless Steel Cab Panels W/ 12 Amber/Amber P3 LEDs W/ Hole For Block Heater For Peterbilt 567 121BBC SFA

    PHOENIX DESIGN

    $322.99
    2.5 X 37.625 Inch 430 Stainless Steel Cab Panels W/ 1 Block Heater Plug HoleDrive with confidence and style with these 2.5-inch stainless steel cab panels for your Peterbilt 567. With 12...
    01-091200290
    SKU:
    01-091200290
    Light Options:
    With Lights
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Polished
    Length Options:
    37 Inch
    Product Type:
    Exterior
    $322.99
    Qty in Cart: 0
    Price:
    $322.99
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  • Robert James Snap Kit For International 4300, 4400, 8500

    Robert James Snap Kit For International 4300, 4400, 8500

    ROBERT JAMES ENTERPRISES

    $19.19
    Snap Kit With 12 Snaps W/ Brass Backs & SS ScrewsEasily secure your Robert James bug screen or winter front with this quality Snap Kit! The kit includes 12 brass snap backs and No. 6 stainless steel...
    07-120400290
    SKU:
    07-120400290
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    International
    Product Type:
    Hood Parts & Acc.
    $19.19
    Qty in Cart: 0
    Price:
    $19.19
    Subtotal:
  • FREE SHIPPING OVER $249
    Interior Fresh Air Filter For Peterbilt

    Interior Fresh Air Filter For Peterbilt

    CAB FRESH FILTER CO.

    $22.07
    Peterbilt Interior Fresh Air Filter AssemblyKeep the inside of your cab fresh with this aftermarket interior filter from CAB Fresh. This filter features internal antimicrobials that stops mold...
    01-1503026
    SKU:
    01-1503026
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Cloth
    Make:
    Peterbilt
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $22.07
    Qty in Cart: 0
    Price:
    $22.07
    Subtotal:
  • FREE SHIPPING OVER $249
    Pre-Filter For Air Cleaner For Kenworth & Peterbilt

    Pre-Filter For Air Cleaner For Kenworth & Peterbilt

    CAB FRESH FILTER CO.

    $33.71
    Pre-Filter For Air Cleaner Fits Kenworth & PeterbiltWe offer aftermarket CAB Fresh pre-filters for air cleaners that fits Kenworth T680, T880, Peterbilt 567 and 579 big rigs. It features activated...
    29-0905708
    SKU:
    29-0905708
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Cloth
    Make:
    Peterbilt
    Make:
    Kenworth
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $33.71
    Qty in Cart: 0
    Price:
    $33.71
    Subtotal:
  • FREE SHIPPING OVER $249
    Interior Fresh Air Filter Assembly For Peterbilt

    Interior Fresh Air Filter Assembly For Peterbilt

    CAB FRESH FILTER CO.

    $46.91
    Peterbilt Fresh Air Filter AssemblyFind aftermarket interior filters with assembly from CAB Fresh at 4 State Trucks. This filter features internal antimicrobials that stops mold growth, reduces odor...
    01-1503025
    SKU:
    01-1503025
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Cloth
    Make:
    Peterbilt
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $46.91
    Qty in Cart: 0
    Price:
    $46.91
    Subtotal:
  • FREE SHIPPING OVER $249
    Cab Fresh Filter Only For Freightliner Cascadia, Century, Columbia & Coronado

    Cab Fresh Filter Only For Freightliner Cascadia, Century, Columbia & Coronado

    CAB FRESH FILTER CO.

    $17.91
    Cab Fresh Filter Only Fits FreightlinerFind your Cab Fresh Replacement Filter at 4 State Trucks. The highly effective filter is made with a primary layer and charcoal layer that traps and eliminates...
    03-091306
    SKU:
    03-091306
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Cloth
    Make:
    Freightliner
    Product Type:
    Exterior
    $17.91
    Qty in Cart: 0
    Price:
    $17.91
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Filter Assembly For HVAC For Peterbilt & Kenworth

    Air Filter Assembly For HVAC For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $38.75
    Air Filter Assembly Fits Peterbilt & KenworthAt 4 State Trucks we offer aftermarket CAB Fresh air filter assemblies for Peterbilt 567 and 579 models, and Kenworth T680 and T880 models. The air filter...
    29-1503002
    SKU:
    29-1503002
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Cloth
    Make:
    Peterbilt
    Make:
    Kenworth
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $38.75
    Qty in Cart: 0
    Price:
    $38.75
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Filter Assembly For HVAC No Housing For Peterbilt & Kenworth

    Air Filter Assembly For HVAC No Housing For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $14.27
    Air Filter Assembly Fits Peterbilt & KenworthWe offer aftermarket CAB Fresh air filter assemblies for Peterbilt 567 and 579 models, and Kenworth T680 and T880 models. The air filter is only for HVAC...
    29-1503003
    SKU:
    29-1503003
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Cloth
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $14.27
    Qty in Cart: 0
    Price:
    $14.27
    Subtotal:
  • FREE SHIPPING OVER $249
    Interior Cab Fresh Air Filter Replacement For Peterbilt 377, 378, 379 & 385

    Interior Cab Fresh Air Filter Replacement For Peterbilt 377, 378, 379 & 385

    CAB FRESH FILTER CO.

    $43.85
    Peterbilt Interior Cab Fresh Air FilterThis air filter fits under the dashboard on the passenger side. Simply slide the filter into the existing track next to the passenger door. It replaces the...
    01-1503017
    SKU:
    01-1503017
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Cloth
    Make:
    Peterbilt
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $43.85
    Qty in Cart: 0
    Price:
    $43.85
    Subtotal:
  • FREE SHIPPING OVER $249
    Black Plastic Cab Fresh Filter For Freightliner Cascadia, Century, Columbia & Coronado

    Black Plastic Cab Fresh Filter For Freightliner Cascadia, Century, Columbia & Coronado

    CAB FRESH FILTER CO.

    $51.99
    Cab Fresh Filter Fits FreightlinerReplace your original filter with this cab fresh filter with a charcoal spor-ax antimicrobial layer. This charcoal layer has adsorption properties that help capture...
    03-091305
    SKU:
    03-091305
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Color:
    Black
    Product Type:
    Exterior
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Release Handle Kit For Front Side Fairings Replaces 85125440 For Volvo VNL Gen II 2004-2018

    BESTfit Release Handle Kit For Front Side Fairings Replaces 85125440 For Volvo VNL Gen II 2004-2018

    BESTFIT TRUCK PARTS

    $128.99
    Side Fairing Mounting Kit With Handles Fits Volvo VNL Gen II 2004-2017Restore full functionality to your Volvo VNL Gen II front fairings with the BESTfit Release Handle Kit, a high-quality...
    13-0512900
    SKU:
    13-0512900
    Truck Class:
    Heavy Duty
    Color:
    Black
    Make:
    Volvo
    Product Type:
    Frame & Chassis
    $128.99
    Qty in Cart: 0
    Price:
    $128.99
    Subtotal:
  • 18 Inch Chrome Boxed End Bumper W/ Hitch, Step, Fog Light Holes For Kenworth T800 Wide Nose 1988-2005

    18 Inch Chrome Boxed End Bumper W/ Hitch, Step, Fog Light Holes For Kenworth T800 Wide Nose 1988-2005

    VALLEY CHROME PLATING

    $904.99
    Valley Chrome Boxed End Bumper W/ Hitch, Step & Fog Light Holes Fits Kenworth T800 Wide Nose* High Quality Bumper* Made Of Chrome Plated Steel * 18 Inch Boxed End* Has Cutouts For:  - Mounting...
    FP229011
    SKU:
    FP229011
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Height Options:
    18 Inch
    Style Options:
    Texas Boxed End
    Make:
    Kenworth
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Type Options:
    Standard Mount
    Product Type:
    Bumpers
    $904.99
    Qty in Cart: 0
    Price:
    $904.99
    Subtotal:
  • 25.12 Inch Crimped T-Rod W/ Rubber Bushings For Kenworth AG380,Peterbilt FlexAir

    25.12 Inch Crimped T-Rod W/ Rubber Bushings For Kenworth AG380,Peterbilt FlexAir

    AFTERMARKET

    $190.99
    T-Rod Crimped W/ Rubber Bush* High Quality T-Rod* 25.12 Inch Length* With Rubber Bushing * Crimped End Design* Front Axle* Made In USA* Sold Individually* Warranty On T-Rods Against Defects In...
    29-05100290
    SKU:
    29-05100290
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Length Options:
    25 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $190.99
    Qty in Cart: 0
    Price:
    $190.99
    Subtotal:
  • BESTfit 5 Inch 90 Degree BOM Multi-Bend Aluminized Exhaust Elbow For Peterbilt

    BESTfit 5 Inch 90 Degree BOM Multi-Bend Aluminized Exhaust Elbow For Peterbilt

    BESTFIT TRUCK PARTS

    $265.99
    Multi-Bend Aluminized Exhaust Elbow Fits Single Exhaust Peterbilt 1999-2006The BESTfit 5 Inch 90 Degree BOM Multi-Bend Aluminized Exhaust Elbow is a high-quality down pipe designed for Peterbilt...
    01-08150290
    SKU:
    01-08150290
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Style Options:
    Elbow Multi-Bend
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Peterbilt
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $265.99
    Qty in Cart: 0
    Price:
    $265.99
    Subtotal:
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