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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

    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

    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

    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

    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

    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

    5 Unique Lug Nut Cover Styles to Give Your Truck a More Polished Look(Post)

    Semi truck lug nut covers aren’t just useful in protecting your lug nut and wheel studs, but they’re a great way to achieve a more polished, cleaner look at a low-cost.  Here are some of the coolest-l

    Signs of a Failing Heater Box & What to Do About It(Post)

    Experiencing refreshing cool air in the summer and warm air in the winter is nearly priceless when behind the wheel of a big rig for 11 hours a day. However, if your A/C heater box isn’t working, your

    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

    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

    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

    How to Buy the Right Peterbilt 379 Radiator(Post)

    If you want to keep your diesel engine from overheating you need a well-functioning replacement Peterbilt radiator to properly carry the hot coolant through small passages, transfer engine heat into t

    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. 

    What are Semi Truck Winter Fronts?(Post)

    A semi-truck winter front is a heavy-duty, weather-resistant cover designed to mount directly over a truck’s front grille. Typically manufactured from reinforced vinyl, canvas, or quilted fabric, it s

    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

    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

    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

    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

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  • FREE SHIPPING OVER $249
    FS1065 Fleetguard Fuel Filter/Water Separator Cummins ISL

    FS1065 Fleetguard Fuel Filter/Water Separator Cummins ISL

    OPP - ORIGINAL PARTS PROGRAM

    $48.77
    FS1065 Fleetguard Fuel Filter With Water Separator Cummins ISLThe filter has efficient filtration function, which can improve the fuel rate of the engine, protect your engine and prolong its service...
    FS1065FLG
    SKU:
    FS1065FLG
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $48.77
    Qty in Cart: 0
    Price:
    $48.77
    Subtotal:
  • FREE SHIPPING OVER $249
    Ball Style Hood Latch Replaces K147-107 & K147-C-106 For Kenworth T300, T600, T800 & W900

    Ball Style Hood Latch Replaces K147-107 & K147-C-106 For Kenworth T300, T600, T800 & W900

    BESTFIT TRUCK PARTS

    $16.01
    Kenworth Ball Style Hood LatchAre you having trouble keeping your latch closed on your hood? 4 State Trucks has the quality aftermarket part that will get your hood back into working order. This ball...
    02-124001
    SKU:
    02-124001
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Color:
    Black
    Material Options:
    Rubber
    Product Type:
    Hood Parts & Acc.
    Ready To Ship:
    Yes
    $16.01
    Qty in Cart: 0
    Price:
    $16.01
    Subtotal:
  • Air Intake Pre-Filter For Freightliner M2-106

    Air Intake Pre-Filter For Freightliner M2-106

    FREEDOM AIR FILTERS

    $48.55
    Air Intake Pre-Filter Fits Freightliner M2-106Clogged filters mean compromising peak air flow and horsepower. Use this high quality air intake pre-filter for your Freightliner M2-106 to keep the...
    03-12336
    SKU:
    03-12336
    Truck Class:
    Heavy Duty
    Color:
    Black
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Product Type:
    Hood Parts & Acc.
    $48.55
    Qty in Cart: 0
    Price:
    $48.55
    Subtotal:
  • FREE SHIPPING OVER $249
    Carrier Bearing Kit With Bracket Replaces 210661-1X CB2106611XSA

    Carrier Bearing Kit With Bracket Replaces 210661-1X CB2106611XSA

    OPP - ORIGINAL PARTS PROGRAM

    $146.99
    Carrier Bearing Kit* High Quality Carrier Bearing Kit* 18N Series With Bracket* Replaces OEM # 210121-1X, CB2106611XSA* Sold As Kit* Warranty On Hub Adapter Against Defects In Workmanship & Material...
    CB2106611XSA
    SKU:
    CB2106611XSA
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $146.99
    Qty in Cart: 0
    Price:
    $146.99
    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
    Subtotal:
  • On Sale
    Limited Quantity Available
    Rear Axle Oil Temperature Gauge - Replaces A22 - 73647 - 106 For Western Star 5700XE 2018+

    Rear Axle Oil Temperature Gauge - Replaces A22 - 73647 - 106 For Western Star 5700XE 2018+

    OPP - ORIGINAL PARTS PROGRAM

    Now: $177.55
    Was: $299.99
    Western Star 5700XE Rear Axle Oil Temperature Gauge* High Quality Rear Axle Oil Temperature Gauge * Direct Replacement * Sold Individually * Warranty On Rear Axle Oil Temperature Gauge Against...
    14-1502000OE
    SKU:
    14-1502000OE
    Truck Class:
    Heavy Duty
    Make:
    Western Star
    OEM:
    OEM
    Product Type:
    Interior
    Ready To Ship:
    Yes
    Now: $177.55
    Was: $299.99
    Qty in Cart: 0
    Price:
    Now: $177.55
    Was: $299.99
    Subtotal:
  • Jones Performance Fiberglass Hood Shell W/ 39 Inch Centerline & Fenders For Freightliner M2 Series, M2-106 Replaces A17-21139-106, A17-21151-062

    Jones Performance Fiberglass Hood Shell W/ 39 Inch Centerline & Fenders For Freightliner M2 Series, M2-106 Replaces A17-21139-106, A17-21151-062

    JONES PERFORMANCE

    $1,762.50
    Fiberglass Hood Shell W/ 39 Inch Centerline & Fenders By Jones Performance Replaces A17-21139-106, A17-21151-062 Fits Freightliner M2 Series, M2-106* High Quality Hood* Extended Breather* Cofab...
    03-12500015
    SKU:
    03-12500015
    Product Type:
    Hood Shell
    Material Options:
    Fiberglass
    Color:
    White
    Location:
    Made In USA
    Make:
    Freightliner
    $1,762.50
    Qty in Cart: 0
    Price:
    $1,762.50
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Plastic Outer A/C Knob For Kenworth

    Chrome Plastic Outer A/C Knob For Kenworth

    UNITED PACIFIC

    $6.16
    Outer A/C Control Knob Fits Kenworth* High Quality Knob* Made Of Chrome Plated Plastic* Sold Individually* Warranty On Knob Against Defects In Workmanship & Material From Date Of Purchase***High...
    02-1501061
    SKU:
    02-1501061
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Finish Options:
    Chrome-Plated
    Product Type:
    Interior
    Ready To Ship:
    Yes
    Location:
    Made In USA
    $6.16
    Qty in Cart: 0
    Price:
    $6.16
    Subtotal:
  • Minimizer Black Floor Mat 2 Piece For Freightliner M2-106, M2-112, 108SD & 114SD

    Minimizer Black Floor Mat 2 Piece For Freightliner M2-106, M2-112, 108SD & 114SD

    MINIMIZER

    $232.99 - $237.99
    Keep your truck's interior clean with the Minimizer Black Floor Mat 2-Piece Set. Designed for heavy-duty trucking, these durable floor mats are made from proprietary thermoplastic to withstand the...
    PPR_206021
    SKU:
    PPR_206021
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Freightliner
    Product Type:
    Interior
    $232.99 - $237.99
    Qty in Cart: 0
    Price:
    $232.99 - $237.99
    Subtotal:
  • On Sale
    High Performance Stage 1.5 Turbocharger For Caterpillar 3406B, C, E, C15 & C16 Engines

    High Performance Stage 1.5 Turbocharger For Caterpillar 3406B, C, E, C15 & C16 Engines

    BULLY DOG

    Now: $1,800.00
    Was: $2,050.00
    Bully Dog High Performance Stage 1.5 Turbocharger Fits Caterpillar 3406B/C/E/C15/C16Increase horsepower and decrease fuel costs of your class 8 vehicle with this high performance Stage 1.5...
    29-0704106
    SKU:
    29-0704106
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Color:
    Black
    Finish Options:
    Black Powder Coat
    Style Options:
    Caterpillar
    Make:
    Universal Items
    Location:
    Made In USA
    Material Options:
    Aluminum
    Type Options:
    Bolt Mount
    Now: $1,800.00
    Was: $2,050.00
    Qty in Cart: 0
    Price:
    Now: $1,800.00
    Was: $2,050.00
    Subtotal:
  • Black Stainless Steel Low-Profile Bumper Guard For Freightliner B2, M2-106

    Black Stainless Steel Low-Profile Bumper Guard For Freightliner B2, M2-106

    LUVERNE

    $794.99
    Black Stainless Steel Low-Profile Bumper Guard* High Quality Bumper Guard* Made Of Stainless Steel * Black* Sleek Subtle Design Contours To The Truck Bumper For A Streamlined Fit * Low Profile For...
    03-013000382
    SKU:
    03-013000382
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Freightliner
    Size Options:
    14 Gauge
    Product Type:
    Bumpers
    $794.99
    Qty in Cart: 0
    Price:
    $794.99
    Subtotal:
  • Polished Stainless Steel Low-Profile Bumper Guard For Freightliner B2, M2-106

    Polished Stainless Steel Low-Profile Bumper Guard For Freightliner B2, M2-106

    LUVERNE

    $947.99
    Polished Stainless Steel Low-Profile Bumper Guard W/ Mounting Brackets* High Quality Bumper Guard* Made Of Polished Stainless Steel * Includes Bumper Guard And Mounting Brackets * Sleek Subtle Design...
    03-013000380
    SKU:
    03-013000380
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Size Options:
    14 Gauge
    Make:
    Freightliner
    Finish Options:
    Polished
    Product Type:
    Bumpers
    $947.99
    Qty in Cart: 0
    Price:
    $947.99
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For T4-6 Units W/ Kohler Engine

    RigMaster Analog Speed Sensor Upgrade Kit For T4-6 Units W/ Kohler Engine

    RIGMASTER

    $181.99
    Kohler Analog Kit - KT7-106K* High Quality Analog Kit * Includes:  - Mechanical/Analog Speed Sensor   - Analog Speed Sensor Connector With Pigtail   - Tensioner Bracket   - Ring Terminal With Extra...
    KT7106K
    SKU:
    KT7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $181.99
    Qty in Cart: 0
    Price:
    $181.99
    Subtotal:
  • 18 Inch American Eagle Rolled End Bumper W/ 8 Inch Ears Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel For Kenworth W900L 1982-2010

    18 Inch American Eagle Rolled End Bumper W/ 8 Inch Ears Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel For Kenworth W900L 1982-2010

    VALLEY CHROME PLATING

    $1,820.99
    Valley Chrome 18 Inch American Eagle Rolled End Bumper W/ 8 Inch Ears Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel* High Quality Bumper* Made Of Stainless Steel* Has Cutouts For: - Mounting...
    FE001066S
    SKU:
    FE001066S
    Truck Class:
    Heavy Duty
    Height Options:
    18 Inch
    Style Options:
    American Eagle Rolled End
    Make:
    Kenworth
    Material Options:
    Stainless Steel
    Product Type:
    Bumpers
    $1,820.99
    Qty in Cart: 0
    Price:
    $1,820.99
    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:
  • Bumper Hardware Kit For Freightliner Century 120

    Bumper Hardware Kit For Freightliner Century 120

    AFTERMARKET

    $144.99
    Freightliner Century 120 Bumper Hardware KitKeep your Freightliner Century 120 bumper properly secured with this premium hardware kit. Including all nuts, bolts, and washers necessary for assembly,...
    03-01060004
    SKU:
    03-01060004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Freightliner
    Product Type:
    Bumpers
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For LG200 Units W/ Kohler Engine

    RigMaster Analog Speed Sensor Upgrade Kit For LG200 Units W/ Kohler Engine

    RIGMASTER

    $131.99
    Kohler Analog Speed Sensor Upgrade Kit - KL7-106K* High Analog Kit * Includes  - Mechanical/Analog Speed Sensor   - Analog Speed Sensor Connector With Pigtail   - Speed Sensor Bracket  - (2)...
    KL7106K
    SKU:
    KL7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • Cogged V - Serpentine Belt 42 Inch For Chevrolet S10, GMC Sonoma, Isuzu Hombre, Ram

    Cogged V - Serpentine Belt 42 Inch For Chevrolet S10, GMC Sonoma, Isuzu Hombre, Ram

    AFTERMARKET

    $16.65
    42 inch Cogged V - Serpentine Belt* High Quality V-Belt* Effective Length 42.00 Inch* Raw Edge * Cogged* No Ribs* Sold Individually* Warranty On V-Belts Against Defects In Workmanship & Material From...
    29-07060106
    SKU:
    29-07060106
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Ford
    Product Type:
    Engine Parts
    $16.65
    Qty in Cart: 0
    Price:
    $16.65
    Subtotal:
  • RigMaster Air Top Cabin Heater 12 Volt W/ Smart Temp Controller

    RigMaster Air Top Cabin Heater 12 Volt W/ Smart Temp Controller

    RIGMASTER

    $1,323.99
    12 Volt Air Top Cabin Heater 12V with Smartemp Controller Kit - RP14-5010609B* High Quality Cabin Heater * 12 Volt* With Smart Temp Controller Kit * Sold Individually* Warranty On Cabin Heaters...
    RP145010609B
    SKU:
    RP145010609B
    Material Options:
    Plastic/Poly
    Truck Class:
    Universal
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Interior
    $1,323.99
    Qty in Cart: 0
    Price:
    $1,323.99
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For Caterpillar, Perkins Engines

    RigMaster Analog Speed Sensor Upgrade Kit For Caterpillar, Perkins Engines

    RIGMASTER

    $128.99
    Analog Speed Sensor Upgrade Kit - RP7-106KThe Analog Kit includes a Mechanical/Analog Speed Sensor, an Analog Speed Sensor Connector with Pigtail, a Speed Sensor Bracket, two Yellow Zinc Cap Screws,...
    RP7106K
    SKU:
    RP7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $128.99
    Qty in Cart: 0
    Price:
    $128.99
    Subtotal:
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