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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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  • 6-5 X 36 Inch Chrome Curve Turn Exhaust Stack

    6-5 X 36 Inch Chrome Curve Turn Exhaust Stack

    TRUX ACCESSORIES

    $188.99
    6-5 OD X 36 Inch Curve Turn Exhaust Stack* High Quality Exhaust Stack* Curved Top Style* Plain End* Chrome Plated Steel* 36 Inch Height* 6 Inch Reduced To 5 Inch Outer Diameter* Sold Individually*...
    09-08011453
    SKU:
    09-08011453
    Height Options:
    36 Inch
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    Make:
    Universal Items
    Material Options:
    Steel
    Diameter Options:
    6 To 5 Inch
    $188.99
    Qty in Cart: 0
    Price:
    $188.99
    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:
  • RigMaster APU Water Pump For Caterpillar, Perkins

    RigMaster APU Water Pump For Caterpillar, Perkins

    RIGMASTER

    $485.99
    OEM RigMaster Water Pump For Caterpillar & Perkins Engines* High Quality Water Pump* Sold Individually* Warranty On Water Pumps Against Defects In Workmanship & Material From Date Of Purchase*** High...
    145017380
    SKU:
    145017380
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $485.99
    Qty in Cart: 0
    Price:
    $485.99
    Subtotal:
  • BESTfit Front Engine Cover For Cummins N-14 Models For Cummins N14 Series Engine

    BESTfit Front Engine Cover For Cummins N-14 Models For Cummins N14 Series Engine

    BESTFIT TRUCK PARTS

    $522.99
    BESTfit N-14 Cummins Front Engine Cover For Tilt Engine ApplicationThis high quality front engine cover that fits Cummins N-14 models has the accessory drive bushing installed and for a tilt engine...
    29-073411458
    SKU:
    29-073411458
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    International
    Make:
    Kenworth
    Make:
    Freightliner
    Make:
    Western Star
    Make:
    Volvo
    Style Options:
    Cummins
    $522.99
    Qty in Cart: 0
    Price:
    $522.99
    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:
  • 53.54 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 970581

    53.54 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 970581

    AFTERMARKET

    $125.99
    53.54 Inch C To C Cross Tube Replaces 970581, A3102S4543, A3102Y3847, 370044412Replace worn or damaged cross tubes with the 53.54 Inch Cross Tube. Featuring a 1.75-inch O.D., 1-1/4 Inch-12 ends, and...
    29-05090145
    SKU:
    29-05090145
    Length Options:
    53 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $125.99
    Qty in Cart: 0
    Price:
    $125.99
    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:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 2871459, 2871482 For Cummins ISL, ISC, PX8 Engines

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 2871459, 2871482 For Cummins ISL, ISC, PX8 Engines

    GLOBAL EMISSIONS

    $1,740.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISL, ISC & PX8 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For...
    29-080600032
    SKU:
    29-080600032
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $1,740.99
    Qty in Cart: 0
    Price:
    $1,740.99
    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:
  • 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 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
    Cab Fresh Replacement HVAC Pre-Filter For Peterbilt & Kenworth

    Cab Fresh Replacement HVAC Pre-Filter For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $14.27
    Air Filter HVAC Pre-FilterKeep your HVAC system running clean and efficient with this replacement pre-filter designed to fit inside the existing housing assembly. It helps capture dust, debris, and...
    29-091301
    SKU:
    29-091301
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Make:
    Kenworth
    Ready To Ship:
    Yes
    Product Type:
    Interior
    $14.27
    Qty in Cart: 0
    Price:
    $14.27
    Subtotal:
  • FREE SHIPPING OVER $249
    6-Way FM Squared Trailer Connector And M 6-Way Squared Trailer Connector W/ 12 Inch 18 AWG Wires

    6-Way FM Squared Trailer Connector And M 6-Way Squared Trailer Connector W/ 12 Inch 18 AWG Wires

    AFTERMARKET

    $8.00
    Moisture Proof 6-Way Squared Trailer Connectors W/ Polarized Plugs & Color Coded Wires* High Quality Trailer Connector* 12 Inch Length * 6-Way Squared * Moisture Proof* Female/Male * With Polarized...
    09-055000145
    SKU:
    09-055000145
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $8.00
    Qty in Cart: 0
    Price:
    $8.00
    Subtotal:
  • BESTfit 8 OD X 20 Inch OAL 90 Degree Tangent Cut Cold Rolled Steel Elbow

    BESTfit 8 OD X 20 Inch OAL 90 Degree Tangent Cut Cold Rolled Steel Elbow

    BESTFIT TRUCK PARTS

    $338.99
    BESTfit 8 Inch Diameter X 20 Inch OAL 90 Degree Tangent Cut Cold Rolled Steel Elbow* High Quality Elbow* Tangent Cut* Made Of Cold Rolled Steel* Dimensions  - 40 Inch Overall Length (20x20)  - 8 Inch...
    09-080100145
    SKU:
    09-080100145
    Truck Class:
    Universal
    Diameter Options:
    8 Inch
    Style Options:
    Elbow
    Material Options:
    Aluminized Steel
    Degree Options:
    90
    Make:
    Universal Items
    Length Options:
    20 Inch
    Product Type:
    Exhaust
    $338.99
    Qty in Cart: 0
    Price:
    $338.99
    Subtotal:
  • Black Steel Bull Bar Brackets For GMC Canyon & Chevrolet Canyon 2015-Current

    Black Steel Bull Bar Brackets For GMC Canyon & Chevrolet Canyon 2015-Current

    GO RHINO

    $73.99
    Go Rhino 55145 Rhino Charger RC2 Mounting Brackets* High Quality Bull Bar Brackets* Made Of Mild Steel* Color: Black Powder Coat* No Drilling Required* Sold Individually* Warranty On Bull Bar...
    55145
    SKU:
    55145
    Color:
    Black
    Truck Class:
    Light Duty
    Material Options:
    Steel
    Make:
    Chevrolet
    Make:
    GMC
    Product Type:
    Bumpers
    Ready To Ship:
    Yes
    $73.99
    Qty in Cart: 0
    Price:
    $73.99
    Subtotal:
  • SS 45 Degree Elbow, 8 x 10 Inch

    SS 45 Degree Elbow, 8 x 10 Inch

    BESTFIT TRUCK PARTS

    $93.99
    4 Inch OD Stainless Steel 45 Degree Elbow* High Quality Elbow* Stainless Steel * 4 Inch OD* 8 Inch X 10 Inch* 45 Degree Bend * Sold Individually* Warranty On Elbows Against Defects In Workmanship &...
    09-0801451
    SKU:
    09-0801451
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Style Options:
    Elbow
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    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:
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