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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

    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

    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

    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

    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

    Adapt to the Diesel Fuel Crisis Using These 10 Truck Mods(Post)

    Small aftermarket semi truck accessories and performance upgrades save more money over time than their upfront price suggests. Here are 10 aftermarket truck upgrades to create cost-per-mile savings. T

    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

    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

    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 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

    T880 Visor Ultimate Buyer's Guide(Post)

    There are countless Kenworth T880 visor options to choose from depending on the theme and style you’re going for. Here's a quick buyer's guide for Kenworth T880 aftermarket visors. Before you buy, con

    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

    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

    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

    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

    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

    How to Choose the Right W990 Drop Visor(Post)

    The best Kenworth W990 drop visor depends on your design preference, mounting configuration, and windshield type or cab style (curved or flat). Buying a Custom W990 Truck Visor Online?  If you're brow

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  • 2.5 Inch Stainless Steel Cab Panels W/ 10 P1 Amber/Amber LEDs For Peterbilt 386 W/ Rear-Mount Exhaust

    2.5 Inch Stainless Steel Cab Panels W/ 10 P1 Amber/Amber LEDs For Peterbilt 386 W/ Rear-Mount Exhaust

    PHOENIX DESIGN

    $308.99
    2.5 Inch Stainless Steel Cab Panels W/ 10 P1 Amber LED Amber Lens Lights Fits Peterbilt 386 W/ Rear-Mount Exhaust* High Quality Cab Panels * Made Of 304 Stainless Steel * 5 P1 Lights Per Side* Amber...
    01-091200940
    SKU:
    01-091200940
    Light Options:
    With Lights
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Polished
    Length Options:
    44 Inch
    Product Type:
    Exterior
    $308.99
    Qty in Cart: 0
    Price:
    $308.99
    Subtotal:
  • 10 Micron Fuel Water Separator Filter

    10 Micron Fuel Water Separator Filter

    OPP - ORIGINAL PARTS PROGRAM

    $42.04
    Donaldson 10 Micron Fuel Water Separator FilterRemove contaminates and water from your fuel system with this Donaldson fuel filter and water separator cartridge. It separates water in the fuel system...
    DNP550849
    SKU:
    DNP550849
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $42.04
    Qty in Cart: 0
    Price:
    $42.04
    Subtotal:
  • RigMaster APU 10 Ft AC Suction Hose # 10 - Evaporator To Frame Bulk For Caterpillar, Perkins LG200, Kohler

    RigMaster APU 10 Ft AC Suction Hose # 10 - Evaporator To Frame Bulk For Caterpillar, Perkins LG200, Kohler

    RIGMASTER

    $157.99
    RigMaster 10 Foot Evaporator to Frame Bulkhead Suction Size 10 Hose- Low Pressure* High Quality Suction Hose* 10 Feet* Number 10* Evaporator To Frame Bulkhead* Low Pressure* Sold Individually*...
    LG9403
    SKU:
    LG9403
    Location:
    Made In USA
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $157.99
    Qty in Cart: 0
    Price:
    $157.99
    Subtotal:
  • RigMaster APU Suction Hose # 10 Bulkhead To Compressor

    RigMaster APU Suction Hose # 10 Bulkhead To Compressor

    RIGMASTER

    $84.99
    Bulkhead To Compressor Suction Hose Size 10* High Quality Suction Hose* Number 10* Bulkhead To Compressor* Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From Date...
    RP9401
    SKU:
    RP9401
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $84.99
    Qty in Cart: 0
    Price:
    $84.99
    Subtotal:
  • RigMaster APU Suction Hose #10 Bulkhead to Evaporator - Low

    RigMaster APU Suction Hose #10 Bulkhead to Evaporator - Low

    RIGMASTER

    $184.99
    Bulkhead to Evaporator Suction Hose Size 10* High Quality Suction Hose* Number 10* Bulkhead To Evaporator * Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From...
    RP9404
    SKU:
    RP9404
    Location:
    Made In USA
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $184.99
    Qty in Cart: 0
    Price:
    $184.99
    Subtotal:
  • RigMaster APU Suction Hose # 10 - Compressor To Frame For Kohler Engine

    RigMaster APU Suction Hose # 10 - Compressor To Frame For Kohler Engine

    RIGMASTER

    $84.99
    Compressor To Frame Suction Size 10 Hose* High Quality Suction Hose* Number 10 Size* Compressor To Frame* Sold Individually* Warranty On Suction Hoses Against Defects In Workmanship & Material From...
    LG9406
    SKU:
    LG9406
    Location:
    Made In USA
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $84.99
    Qty in Cart: 0
    Price:
    $84.99
    Subtotal:
  • RigMaster APU Suction Hose # 10 - Compressor to Frame For Caterpillar, Perkins LG200

    RigMaster APU Suction Hose # 10 - Compressor to Frame For Caterpillar, Perkins LG200

    RIGMASTER

    $78.99
    Compressor to Frame Suction Size 10 Hose* High Quality Suction Hose* Number 10 Size* Compressor To Frame* Sold Individually* Warranty On Suction Hoses Against Defects In Workmanship & Material From...
    LG9401
    SKU:
    LG9401
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $78.99
    Qty in Cart: 0
    Price:
    $78.99
    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 10 Ft Liquid Hose # 6 - Frame Bulkhead To Evaporator High Pressure For Caterpillar, Perkins LG200, Kohler

    RigMaster APU 10 Ft Liquid Hose # 6 - Frame Bulkhead To Evaporator High Pressure For Caterpillar, Perkins LG200, Kohler

    RIGMASTER

    $85.99
    10 Foot Frame Bulkhead To Evaporator Size 6 Hose- High Pressure* High Quality Liquid Hose* 10 Feet* Number 8 Size* Bulkhead To Evaporator * High Pressure* Sold Individually* Warranty On Liquid Hoses...
    LG9404
    SKU:
    LG9404
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $85.99
    Qty in Cart: 0
    Price:
    $85.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Alumzd Steel Elbow Pipe W/ 90 Degree Bend For Peterbilt 377, 378 & 379

    BESTfit Alumzd Steel Elbow Pipe W/ 90 Degree Bend For Peterbilt 377, 378 & 379

    BESTFIT TRUCK PARTS

    $234.99
    Alumzd Steel Elbow Pipe W/ 5 Inch ID/OD By BESTfit Fits Peterbilt 377, 378 & 379The BESTfit 5 Inch I.D./O.D. 90 Degree Exhaust Elbow Pipe provides a perfect fit for Peterbilt 377, 378, and 379...
    01-08133940
    SKU:
    01-08133940
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Style Options:
    Elbow
    Degree Options:
    90
    Make:
    Peterbilt
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    Location:
    Made In USA
    Material Options:
    Aluminized Steel
    $234.99
    Qty in Cart: 0
    Price:
    $234.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Cab Fresh HVAC Pre-Filter W/ Black Housing For Peterbilt & Kenworth

    Cab Fresh HVAC Pre-Filter W/ Black Housing For Peterbilt & Kenworth

    CAB FRESH FILTER CO.

    $50.99
    Air Filter HVAC Pre-FilterHelp protect your cab's HVAC system with this complete pre-filter assembly featuring a durable housing and replaceable filter element. Designed to capture dust, debris, and...
    29-091300
    SKU:
    29-091300
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • 10 Micron Fuel-Water Separator Filter

    10 Micron Fuel-Water Separator Filter

    OPP - ORIGINAL PARTS PROGRAM

    $30.24
    10 Micron Fuel-Water Separator Filter* High Quality Fuel Water Separator Filter* Filter* Sold Individually * Warranty On Fuel Water Separator Filter Against Defects In Workmanship & Material From...
    FS19764FLG
    SKU:
    FS19764FLG
    Truck Class:
    Heavy Duty
    Make:
    Western Star
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $30.24
    Qty in Cart: 0
    Price:
    $30.24
    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:
  • Stainless Steel Diesel Particulate Filter Replaces 2517331C91 For International W/ MaxxForce 7/DT Engine

    Stainless Steel Diesel Particulate Filter Replaces 2517331C91 For International W/ MaxxForce 7/DT Engine

    GLOBAL EMISSIONS

    $1,634.99
    Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce 7/DT Engines - Replaces 2517331C91* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...
    07-080600002
    SKU:
    07-080600002
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    International
    Product Type:
    Exhaust
    $1,634.99
    Qty in Cart: 0
    Price:
    $1,634.99
    Subtotal:
  • 2 Way Lumbar Switch For Bostrom Seats

    2 Way Lumbar Switch For Bostrom Seats

    BOSTROM TRUCK SEATS

    $183.99
    Lumbar Switch For Bostrom SeatsIs the lumbar switch for your suspension seat not working? 4 State Trucks offers this high quality replacement 2 way switch for fit for a Bostrom Seat. It is sold...
    6222294001
    SKU:
    6222294001
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Seats
    $183.99
    Qty in Cart: 0
    Price:
    $183.99
    Subtotal:
  • Textured Black RB20 Running Boards For GMC Sierra, Chevrolet Silverado 2500HD, 3500HD Crew Cab

    Textured Black RB20 Running Boards For GMC Sierra, Chevrolet Silverado 2500HD, 3500HD Crew Cab

    GO RHINO

    $555.50
    Go Rhino 69405187PC RB20 Running Boards Plus Brackets Complete Kit* High Quality Running Boards* Cab Length Running Boards For Popular Crew Cab And Extended Cab Trucks* Includes Mounting Brackets For...
    69405187PC
    SKU:
    69405187PC
    Truck Class:
    Light Duty
    Color:
    Black
    Material Options:
    Steel
    Make:
    Chevrolet
    Make:
    GMC
    Finish Options:
    Galvanized
    Product Type:
    Frame & Chassis
    $555.50
    Qty in Cart: 0
    Price:
    $555.50
    Subtotal:
  • Lumbar Valve For Knoedler Air Chief Seat, Driver Side

    Lumbar Valve For Knoedler Air Chief Seat, Driver Side

    KNOEDLER

    $81.99
    Driver Side Lumbar Valve For Knoedler Air Chief SeatThis replacement valve allows for easy adjustment to maintain the appropriate pressure levels, ensuring optimal support and comfort even with...
    940004
    SKU:
    940004
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Seats
    $81.99
    Qty in Cart: 0
    Price:
    $81.99
    Subtotal:
  • RigMaster Liquid Hose #6 Bulkhead To Evaporator - High

    RigMaster Liquid Hose #6 Bulkhead To Evaporator - High

    RIGMASTER

    $135.99
    Bulkhead To Evaporator Liquid Hose Size 6* High Quality Liquid Hose* Number 6* Bulkhead To Evaporator * Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From Date Of...
    RP9405
    SKU:
    RP9405
    Material Options:
    Rubber
    Truck Class:
    Universal
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $135.99
    Qty in Cart: 0
    Price:
    $135.99
    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:
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