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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

    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

    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

    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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  • 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:
  • FREE SHIPPING OVER $249
    Intake Pre-Filter Cap For Freightliner Cascadia 113 & 125

    Intake Pre-Filter Cap For Freightliner Cascadia 113 & 125

    FREEDOM AIR FILTERS

    $75.99
    Intake Pre-Filter Cap Fits Freightliner Cascadia* High Quality Polyester * Fits Over Air Cleaner Housing Inlet 13.5 Inch Diameter* Color Black* UV Resistant* Sold Individually* Warranty On...
    03-072300
    SKU:
    03-072300
    Truck Class:
    Heavy Duty
    Color:
    Black
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $75.99
    Qty in Cart: 0
    Price:
    $75.99
    Subtotal:
  • Bendix Type PP8 Dash Control Valve - Replaces 287567BXW, KN20035, 287238N

    Bendix Type PP8 Dash Control Valve - Replaces 287567BXW, KN20035, 287238N

    AUTOMANN USA

    $42.03
    Push-Pull Dash Control ValveAchieve dependable air brake operation with the Bendix Type PP8 Dash Control Valve, designed as a replacement for 287567BXW, KN20035, and 287238N. Its push-pull mechanism...
    287238
    SKU:
    287238
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    $42.03
    Qty in Cart: 0
    Price:
    $42.03
    Subtotal:
  • FREE SHIPPING OVER $249
    5 Inch Exhaust Hanger Clamps K077-234 For Kenworth T800

    5 Inch Exhaust Hanger Clamps K077-234 For Kenworth T800

    OPP - ORIGINAL PARTS PROGRAM

    $77.99
    5 Inch Exhaust Hanger Clamps For Kenworth* High Quality Hanger Clamps* Sold Individually* Warranty On Clamps Against Defects In Workmanship & Material From Date Of Purchase*** This Is An OEM...
    02-08472340
    SKU:
    02-08472340
    Truck Class:
    Heavy Duty
    Length Options:
    5 Inch
    Make:
    Kenworth
    Product Type:
    Exhaust
    $77.99
    Qty in Cart: 0
    Price:
    $77.99
    Subtotal:
  • Air Restriction Indicator - Replaces A22 - 72244 - 000 For Western Star 5700XE 2016+

    Air Restriction Indicator - Replaces A22 - 72244 - 000 For Western Star 5700XE 2016+

    OPP - ORIGINAL PARTS PROGRAM

    $22.43
    Air Restriction Indicator For Western Star 5700XE* High Quality Air Restriction Indicator* Sold Individually* Warranty On Air Restriction Indicators Against Defects In Workmanship & Material From...
    14-0723000OE
    SKU:
    14-0723000OE
    Truck Class:
    Heavy Duty
    Make:
    Western Star
    OEM:
    OEM
    Product Type:
    Interior
    $22.43
    Qty in Cart: 0
    Price:
    $22.43
    Subtotal:
  • FREE SHIPPING
    BESTfit 3 Piece Exhaust Manifold Kit, Turbo Mount - High / Flat Center Section For Detroit 60 Series Engine

    BESTfit 3 Piece Exhaust Manifold Kit, Turbo Mount - High / Flat Center Section For Detroit 60 Series Engine

    BESTFIT TRUCK PARTS

    $479.99
    BESTfit Exhaust Manifold Kit With High & Flat Center Turbo MountIntroducing BESTfit CHROME EXHAUST KITS! These Kits Are Installer-Friendly, Produced With All High Quality Components, Offer The Best...
    29-0723512896
    SKU:
    29-0723512896
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    $479.99
    Qty in Cart: 0
    Price:
    $479.99
    Subtotal:
  • Flywheel Housing With 12MM Mounting Holes By BESTfit For Detroit 60 Series

    Flywheel Housing With 12MM Mounting Holes By BESTfit For Detroit 60 Series

    BESTFIT TRUCK PARTS

    $851.99
    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...
    29-0723505073
    SKU:
    29-0723505073
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    International
    Make:
    Freightliner
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $851.99
    Qty in Cart: 0
    Price:
    $851.99
    Subtotal:
  • RigMaster Electric Fan Puller 12 Volt 10 Blade

    RigMaster Electric Fan Puller 12 Volt 10 Blade

    RIGMASTER

    $102.99
    12v Puller Electric Fan - RP7-230* High Quality Electric Fan * 12 Volt* 10 Blades* Sold Individually* Warranty On Electric Fans Against Defects In Workmanship & Material From Date Of Purchase*** High...
    RP7230
    SKU:
    RP7230
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $102.99
    Qty in Cart: 0
    Price:
    $102.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Polyester Adjustable 2 Inch Wheel Tie Down Straps, Yellow For 13-16 Inch Tires

    Polyester Adjustable 2 Inch Wheel Tie Down Straps, Yellow For 13-16 Inch Tires

    AFTERMARKET

    $43.54
    Yellow Adjustable Wheel Tie Down Straps W/ 3000 lbs Breaking StrengthTransport vehicles safely and securely with these quality adjustable wheel tie down straps with J-hooks. Sold in pairs, they wrap...
    09-020723
    SKU:
    09-020723
    Truck Class:
    Universal
    Color:
    Yellow
    Material Options:
    Vinyl
    Make:
    Universal Items
    Product Type:
    Cargo Control
    $43.54
    Qty in Cart: 0
    Price:
    $43.54
    Subtotal:
  • RigMaster Electric Fan Puller 12 Volt 10 Blade - Side Mounted

    RigMaster Electric Fan Puller 12 Volt 10 Blade - Side Mounted

    RIGMASTER

    $104.99
    APU Electric Fan with Female Delphi Connector - LG7-230The RigMaster APU fan help ensure optimal airflow and ventilation within the APU system, supporting efficient cooling and smooth operation. It...
    LG7230
    SKU:
    LG7230
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • BESTfit Detroit 60 Series Flywheel SAE 1 23514177, 23511177, 23509709

    BESTfit Detroit 60 Series Flywheel SAE 1 23514177, 23511177, 23509709

    BESTFIT TRUCK PARTS

    $432.99
    BESTfit Flywheel With 10 Inch Opening, 20 Inch OD Ring Gear With 118 TeethThis high quality flywheel SAE 1 that fits the Detroit 60 series has a ring gear with 118 teeth, it has 12 bolt mounting...
    29-0723514177
    SKU:
    29-0723514177
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Diameter Options:
    20 Inch
    Style Options:
    Flat
    $432.99
    Qty in Cart: 0
    Price:
    $432.99
    Subtotal:
  • 150 Combination Coupling

    150 Combination Coupling

    PREMIER

    $301.99
    150 Combination Coupling* High Quality Combination Coupling* 150 Coupling And 155 Ball Capacity MGTW- 10000 Lbs.* One Of Premiers Most Unique And Versatile Couplings Is Our Popular Model 150...
    09-051100723
    SKU:
    09-051100723
    Truck Class:
    Universal
    Location:
    Made In USA
    Rating:
    20000 LBS
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $301.99
    Qty in Cart: 0
    Price:
    $301.99
    Subtotal:
  • BESTfit Detroit 60 Series Flywheel Housing With 14MM Mounting Holes

    BESTfit Detroit 60 Series Flywheel Housing With 14MM Mounting Holes

    BESTFIT TRUCK PARTS

    $963.99
    BESTfit Aluminum Flywheel Housing, Replaces 23522643When precision matters, trust the BESTfit Detroit 60 Series Flywheel Housing to maintain your engine's performance. Made from durable aluminum,...
    29-0723522643
    SKU:
    29-0723522643
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Make:
    International
    Make:
    Peterbilt
    Make:
    Freightliner
    Product Type:
    Engine Parts
    $963.99
    Qty in Cart: 0
    Price:
    $963.99
    Subtotal:
  • Strap Mount Front Air Cleaner Bracket Kit With 5 Watermelon Light Holes - Pair For Peterbilt 589

    Strap Mount Front Air Cleaner Bracket Kit With 5 Watermelon Light Holes - Pair For Peterbilt 589

    JML KUSTOMS

    $346.99
    Peterbilt 589 Front Air Cleaner Brackets with Watermelon Light MountsThese strap-mount front air cleaner brackets fit the Peterbilt 589 and are designed to hold five watermelon-style lights...
    01-090500723
    SKU:
    01-090500723
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Product Type:
    Exterior
    Make:
    Peterbilt
    $346.99
    Qty in Cart: 0
    Price:
    $346.99
    Subtotal:
  • 3 Inch Stainless Steel Extended Cab Panels W/ 14 - 2 Inch Light Holes For Peterbilt 388, 389 123 BBC

    3 Inch Stainless Steel Extended Cab Panels W/ 14 - 2 Inch Light Holes For Peterbilt 388, 389 123 BBC

    PHOENIX DESIGN

    $188.99
    3 Inch Extended Cab Panels W/ 14 - 2 Inch Light Holes Fits Peterbilt 388 & 389 123 BBC* High Quality Cab Panels* Made Of 304 Stainless Steel* Extended* 7 - 2 Inch Round Light Holes Per Side* Lights...
    01-091200723
    SKU:
    01-091200723
    Location:
    Made In USA
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Polished
    Length Options:
    48 Inch
    Product Type:
    Exterior
    $188.99
    Qty in Cart: 0
    Price:
    $188.99
    Subtotal:
  • FREE SHIPPING
    Detroit 60 Series Engine 3 Piece Exhaust Manifold Kit, Turbo Mount - Medium Angled Center Section By BESTfit

    Detroit 60 Series Engine 3 Piece Exhaust Manifold Kit, Turbo Mount - Medium Angled Center Section By BESTfit

    BESTFIT TRUCK PARTS

    $370.99
    BESTfit Exhaust Manifold Kit With Medium Angled Center Turbo MountIntroducing BESTfit CHROME EXHAUST KITS! These Kits Are Installer-Friendly, Produced With All High Quality Components, Offer The Best...
    29-0723512897
    SKU:
    29-0723512897
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $370.99
    Qty in Cart: 0
    Price:
    $370.99
    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:
  • 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
    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:
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