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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

    Semi-Truck Mattress Sizes: Fitment Chart & Buying Guide(Post)

    Looking for the right sized semi truck mattress? Every long-haul trucker should prioritize spending a sizeable portion of their budget on a quality mattress and driver's seat. That's where you spend

    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

    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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  • 304 SS Turbo Exhaust Adapter Replaces 04-17094-031

    304 SS Turbo Exhaust Adapter Replaces 04-17094-031

    BESTFIT TRUCK PARTS

    $926.99
    Stainless Steel Exhaust Turbo Adapter With 5 Inch Diameter* High Quality Exhaust Turbo Adapter* With Pyrometer Fitting* Made Of 304 Stainless Steel* 5 Inch OD* Sold Individually* Warranty On Exhaust...
    03-08140310
    SKU:
    03-08140310
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Make:
    Freightliner
    Product Type:
    Exhaust
    $926.99
    Qty in Cart: 0
    Price:
    $926.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 21905492, 85001353 For Mack/Volvo MP7/MP8 Engines

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 21905492, 85001353 For Mack/Volvo MP7/MP8 Engines

    GLOBAL EMISSIONS

    $2,070.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Mack/Volvo MP7 & MP8 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For...
    29-080600031
    SKU:
    29-080600031
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Volvo
    Make:
    Mack
    Product Type:
    Exhaust
    $2,070.99
    Qty in Cart: 0
    Price:
    $2,070.99
    Subtotal:
  • 3/8 Inch NPT Supply Line Filter ESL2550, RSL2550

    3/8 Inch NPT Supply Line Filter ESL2550, RSL2550

    AUTOMANN USA

    $35.86
    Supply Line Filter 3/8 Inch NPT Inlet & Outlet* High Quality Supply Line Filter* 3/8 Inch NPT Inlet And Outlet* Sold Individually* Warranty On Supply Line Filters Against Defects In Workmanship &...
    19-05170031
    SKU:
    19-05170031
    Product Type:
    Trailer
    Truck Class:
    Heavy Duty
    Make:
    Trailer
    Diameter Options:
    3/8 Inch
    $35.86
    Qty in Cart: 0
    Price:
    $35.86
    Subtotal:
  • FREE SHIPPING
    MV3 Dash Air Valve - Replaces K031483, K031484, K031485

    MV3 Dash Air Valve - Replaces K031483, K031484, K031485

    OPP - ORIGINAL PARTS PROGRAM

    $443.99
    MV-3 Type Push - Pull Tractor-Trailer Dash Air Control Brake Valve - 3/8 Inch Ports, 1/4 Inch -20 Mounting HolesThe MV3 Air Control Valve is a key component for your truck's air parking brake system...
    K031485
    SKU:
    K031485
    Truck Class:
    Heavy Duty
    Color:
    Black
    Material Options:
    Plastic/Poly
    Product Type:
    Interior
    $443.99
    Qty in Cart: 0
    Price:
    $443.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Aluminum HEXTHREAD ® Filter Cartridge Assembly Compatible With XTRACTOR ® XTR-8856 And XTRACTOR ® XTR-8058 For Trailer Axles

    Aluminum HEXTHREAD ® Filter Cartridge Assembly Compatible With XTRACTOR ® XTR-8856 And XTRACTOR ® XTR-8058 For Trailer Axles

    THE HUB CORPORATION

    $45.99
    HEXTHREAD Filter Cartridge For Trailer Axle ApplicationsThe HEXTHREAD Filter Cartridge is a high-quality replacement filtration component designed for trailer axle hub caps using the XTRACTOR...
    19-20200031
    SKU:
    19-20200031
    Product Type:
    Trailer
    Material Options:
    Aluminum
    Make:
    Trailer
    Ready To Ship:
    Yes
    $45.99
    Qty in Cart: 0
    Price:
    $45.99
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  • Black Guide H6024 Halogen Headlight W/ 5 LED Vintage 682-C Series Top Mount Light

    Black Guide H6024 Halogen Headlight W/ 5 LED Vintage 682-C Series Top Mount Light

    UNITED PACIFIC

    $212.99 - $225.99
    Bring a classic heavy-duty look together with modern functionality using the Black Guide H6024 halogen headlight with 5 LED Vintage 682-C Series top mount light. This style features a gloss black...
    PPR_203137
    SKU:
    PPR_203137
    Truck Class:
    Heavy Duty
    Shape Options:
    Round
    Make:
    GMC
    Make:
    Peterbilt
    Make:
    Freightliner
    Make:
    Mack
    Make:
    Kenworth
    Make:
    International
    Make:
    Sterling
    Material Options:
    Aluminum
    Product Type:
    Lighting
    $212.99 - $225.99
    Qty in Cart: 0
    Price:
    $212.99 - $225.99
    Subtotal:
  • CSM 36 Inch LED Glow Tube Light - Purple

    CSM 36 Inch LED Glow Tube Light - Purple

    CHROME SHOP MAFIA

    $42.65
    Purple 3 Foot Flush Mount Neon Glow LED Tube Light By Chrome Shop MafiaThis 36-inch-long purple glow tube light creates a brilliant neon look with 162 LEDs per meter and works with 12-volt systems...
    09-163003102
    SKU:
    09-163003102
    Color:
    Purple
    Length Options:
    36 Inch
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Lighting
    $42.65
    Qty in Cart: 0
    Price:
    $42.65
    Subtotal:
  • Mud Flap End Red Reflectors 1-5/8 Inch - 031-01269

    Mud Flap End Red Reflectors 1-5/8 Inch - 031-01269

    AUTOMANN USA

    $8.71
    1-5/8 Inch Red Reflectors End Caps For Round Spring Loaded Mud Flap HangersThese Mud Flap End Reflectors attach effortlessly to round spring loaded mud flap hangers. Each cap measures 1 5/8 inches...
    09-05070070
    SKU:
    09-05070070
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Mud Flaps
    $8.71
    Qty in Cart: 0
    Price:
    $8.71
    Subtotal:
  • Rear Driveshaft Assembly Replaces 26042110, 26050319, 7849724 For GMC, Chevrolet K1500, Tahoe

    Rear Driveshaft Assembly Replaces 26042110, 26050319, 7849724 For GMC, Chevrolet K1500, Tahoe

    DAYTON / DORMAN

    $569.99
    Rear Driveshaft Assembly Fits GMC, Chevrolet K1500 & Tahoe* High Quality Rear Driveshaft Assembly* Made Of Steel* Axle Nut Included: No* CV Joints Included: No* Driveshaft Length (In): 49.25 In*...
    12-052100031
    SKU:
    12-052100031
    Truck Class:
    Heavy Duty
    Make:
    Mack
    Product Type:
    Frame & Chassis
    $569.99
    Qty in Cart: 0
    Price:
    $569.99
    Subtotal:
  • Stainless Guide 682-C Headlight W/ H6014 Sealed Beam Bulb, Original Style 5 Diode Amber LED Turn Signal Light For Peterbilt, Freightliner, International & Mack

    Stainless Guide 682-C Headlight W/ H6014 Sealed Beam Bulb, Original Style 5 Diode Amber LED Turn Signal Light For Peterbilt, Freightliner, International & Mack

    UNITED PACIFIC

    $236.99
    Stainless Guide 682-C H6014 Halogen Headlight W/ Original Style 5 Diode Amber LED Turn Signal Light* High Quality Headlight * 304 Stainless Steel Headlight Housing And Bezel* H6014 Halogen Seal Beam...
    29-160600316
    SKU:
    29-160600316
    Truck Class:
    Heavy Duty
    Diameter Options:
    7 Inch
    Shape Options:
    Round
    Material Options:
    Stainless Steel
    Make:
    International
    Make:
    Sterling
    Make:
    GMC
    Make:
    Peterbilt
    Make:
    Freightliner
    Make:
    Mack
    Make:
    Kenworth
    Color:
    Amber
    Product Type:
    Lighting
    $236.99
    Qty in Cart: 0
    Price:
    $236.99
    Subtotal:
  • Stainless Guide 682-C H4 Headlight W/ 34 White LED Position Light, 5 Diode Amber/Clear LED Turn Signal Light For Peterbilt, Freightliner, International & Mack

    Stainless Guide 682-C H4 Headlight W/ 34 White LED Position Light, 5 Diode Amber/Clear LED Turn Signal Light For Peterbilt, Freightliner, International & Mack

    UNITED PACIFIC

    $315.99
    Stainless Guide 682-C H4 Halogen Headlight W/ 34 White LED Position Light, 5 Amber/Clear LED Turn Signal Light* High Quality Headlight * 304 Stainless Steel Headlight Housing And Bezel* Crystal Clear...
    29-160600313
    SKU:
    29-160600313
    Truck Class:
    Heavy Duty
    Diameter Options:
    7 Inch
    Material Options:
    Stainless Steel
    Shape Options:
    Round
    Make:
    GMC
    Make:
    Peterbilt
    Make:
    Freightliner
    Make:
    Mack
    Make:
    Kenworth
    Make:
    International
    Make:
    Sterling
    Product Type:
    Lighting
    $315.99
    Qty in Cart: 0
    Price:
    $315.99
    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:
  • Drag Link 32 Inch C To C Replaces 1415516000 For Freightliner

    Drag Link 32 Inch C To C Replaces 1415516000 For Freightliner

    AFTERMARKET

    $349.99
    32 Inch C To C Drag Link Replaces 1415516000, 14-15516-000, 1417299000, 14-17299-000Engineered for long-lasting performance, this 32-inch drag link replaces Freightliner OEM #1415516000 with precise...
    03-05090031
    SKU:
    03-05090031
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Length Options:
    32 Inch
    Make:
    Freightliner
    Product Type:
    Frame & Chassis
    $349.99
    Qty in Cart: 0
    Price:
    $349.99
    Subtotal:
  • Minimizer Black Poly Tool Box W/ Single Latch Lock, 2 Side Straps- 20 X 19 X 36 Inch

    Minimizer Black Poly Tool Box W/ Single Latch Lock, 2 Side Straps- 20 X 19 X 36 Inch

    MINIMIZER

    $543.99
    20 X 19 X 36 Inch Black Poly Tool Box With Single Latch Lock & 2 Side Straps By MinimizerProtect valuable tools and improve truck storage with the Minimizer Black Poly Toolbox. Built from...
    09-020100031
    SKU:
    09-020100031
    Height Options:
    19 Inch
    Truck Class:
    Universal
    Length Options:
    20 Inch
    Width Options:
    36 Inch
    Location:
    Made In USA
    Color:
    Black
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Toolboxes
    $543.99
    Qty in Cart: 0
    Price:
    $543.99
    Subtotal:
  • 1.25 Inch Wheel Bearing Cone 15123, 031-029-02

    1.25 Inch Wheel Bearing Cone 15123, 031-029-02

    AUTOMANN USA

    $6.25
    Replacement Wheel Bearing Cone* High Quality Wheel Bearing Cone* Dimensions:  - 1.25 Inch I.D.  - 0.715 Inch Bearing Width* Sold Individually* Warranty On Wheel Bearing Cones Against Defects In...
    09-20200147
    SKU:
    09-20200147
    Truck Class:
    Heavy Duty
    Product Type:
    Wheels
    Diameter Options:
    1 1/4 Inch
    Shape Options:
    Round
    Make:
    Universal Items
    $6.25
    Qty in Cart: 0
    Price:
    $6.25
    Subtotal:
  • Driveshaft Assembly Replaces 4L3Z4R602PA, 5L3Z4R602P, 5L3Z4R602PA For Ford F150

    Driveshaft Assembly Replaces 4L3Z4R602PA, 5L3Z4R602P, 5L3Z4R602PA For Ford F150

    DAYTON / DORMAN

    $855.99
    Driveshaft Assembly Fits Ford F150 2004-2006* High Quality Driveshaft Assembly* Made Of Steel* Driveshaft Length (In): 86.125 In* Driveshaft Wall Thickness (In): 0.083 In* Grade Type: Standard*...
    05-052100031
    SKU:
    05-052100031
    Truck Class:
    Heavy Duty
    Make:
    Ford
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Location:
    Made In USA
    $855.99
    Qty in Cart: 0
    Price:
    $855.99
    Subtotal:
  • 20 Inch Chrome Standard Rolled End Bumper, 10 Gauge W/ Center Tow Hole For Peterbilt 357, 378 & 379 SFA

    20 Inch Chrome Standard Rolled End Bumper, 10 Gauge W/ Center Tow Hole For Peterbilt 357, 378 & 379 SFA

    VALLEY CHROME PLATING

    $1,128.99
    Valley Chrome Standard Rolled End Bumper W/ Center Tow Hole Fits Peterbilt 357, 378 & 379 SFAThis replacement bumper, made from sturdy 10-gauge chrome-plated steel, is designed to last. It has handy...
    HC001031
    SKU:
    HC001031
    Make:
    Peterbilt
    Height Options:
    20 Inch
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Style Options:
    Standard Rolled End
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Type Options:
    Standard Mount
    Size Options:
    10 Gauge
    Product Type:
    Bumpers
    $1,128.99
    Qty in Cart: 0
    Price:
    $1,128.99
    Subtotal:
  • Dual Function Guide 682-C Headlight Turn Signal Light - Amber LED/Clear Lens

    Dual Function Guide 682-C Headlight Turn Signal Light - Amber LED/Clear Lens

    UNITED PACIFIC

    $16.92
    5 LED Dual Function Guide 682-C Headlight Turn Signal LightUpgrade your truck's lighting with this dual function headlight turn signal assembly designed for 682-C series bezels. The unit features...
    09-160103102
    SKU:
    09-160103102
    Style Options:
    LED
    Color:
    Amber
    Product Type:
    Lighting
    Make:
    Universal Items
    $16.92
    Qty in Cart: 0
    Price:
    $16.92
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 12V A/C Evaporator Thermistor W/ 2 Pin Connector For Sprinter Van, Mack & Volvo Replaces 85115771

    BESTfit 12V A/C Evaporator Thermistor W/ 2 Pin Connector For Sprinter Van, Mack & Volvo Replaces 85115771

    BESTFIT TRUCK PARTS

    $14.99
    12V A/C Evaporator Thermistor W/ 2 Pin Connector By BESTfit Replaces 85115771 Fits Sprinter Van, Mack & VolvoMaintain accurate temperature control in your truck's HVAC system with the BESTfit 12V A/C...
    29-07000031
    SKU:
    29-07000031
    Product Type:
    Engine Parts
    Make:
    Other - Pickup Truck
    Make:
    Mack
    Make:
    Volvo
    $14.99
    Qty in Cart: 0
    Price:
    $14.99
    Subtotal:
  • 20 Inch Stainless Steel Standard Rolled End Bumper W/ Tow Hole For Peterbilt 357, 378 & 379 SFA

    20 Inch Stainless Steel Standard Rolled End Bumper W/ Tow Hole For Peterbilt 357, 378 & 379 SFA

    VALLEY CHROME PLATING

    $1,221.99
    Valley Chrome 20 Inch To 16 Inch Rolled End Bumper W/ Tow Hook Holes Fits Peterbilt 378 & 379Are you looking to customize your truck with a big shiny bumper? 4 State Trucks offers this quality 20...
    HC001031S
    SKU:
    HC001031S
    Height Options:
    20 Inch
    Truck Class:
    Heavy Duty
    Light Options:
    Without Lights
    Style Options:
    Standard Rolled End
    Make:
    Peterbilt
    Material Options:
    Stainless Steel
    Type Options:
    Standard Mount
    Product Type:
    Bumpers
    $1,221.99
    Qty in Cart: 0
    Price:
    $1,221.99
    Subtotal:
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