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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

    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 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

    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

    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

    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. 

    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

    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

    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

    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

    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

    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

    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 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

    7 Best Exterior Chrome Upgrades for the Kenworth W900A(Post)

    Outfit your Kenworth W900A model with stunning exterior chrome accessories and stainless-steel upgrades that seamlessly tie together the entire truck’s theme. Classic big rig owners take a lot of prid

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  • Legendary 21 Diode White T15/912/921 LED Bulb

    Legendary 21 Diode White T15/912/921 LED Bulb

    LEGENDARY

    $14.99
    21 Diode White T15/912/921 LED BulbUpgrade your truck's reversing system with the Legendary 21 Diode White T15/912/921 LED Bulb, featuring 21 powerful SMD2016 diodes for 660 lumens of crisp, bright...
    09-1601001081
    SKU:
    09-1601001081
    Product Type:
    Lighting
    Style Options:
    LED
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $14.99
    Qty in Cart: 0
    Price:
    $14.99
    Subtotal:
  • 6 LED Tower Style Bulbs, 921/912

    6 LED Tower Style Bulbs, 921/912

    GRAND GENERAL

    $14.45 - $16.87
    Enhance your truck lighting with the 6 LED 921/912 Tower Style Bulb. This 12-volt LED replacement bulb features six 5630 SMD LEDs arranged in a tower-style design, with two LEDs on top and four on...
    PPR_205758
    SKU:
    PPR_205758
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $14.45 - $16.87
    Qty in Cart: 0
    Price:
    $14.45 - $16.87
    Subtotal:
  • 2.5 Inch Stainless Steel Cab Panels W/ 8 P3 Amber/Amber LEDs For 2012 thru 2016 Peterbilt 386 W/ Cab-Mount Exhaust

    2.5 Inch Stainless Steel Cab Panels W/ 8 P3 Amber/Amber LEDs For 2012 thru 2016 Peterbilt 386 W/ Cab-Mount Exhaust

    PHOENIX DESIGN

    $230.99
    2.5 Inch Stainless Steel Cab Panels W/ 8 P3 Amber LED Amber Lens Lights Fits Peterbilt 386 W/ Cab-Mount Exhaust* High Quality Cab Panels * Made Of 304 Stainless Steel * 4 P3 Lights Per Side* Amber...
    01-091200921
    SKU:
    01-091200921
    Location:
    Made In USA
    Light Options:
    With Lights
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Polished
    Length Options:
    40 Inch
    Product Type:
    Exterior
    $230.99
    Qty in Cart: 0
    Price:
    $230.99
    Subtotal:
  • Stainless Steel Diesel Particulate Filter Replaces 20869859, 20992181 For Mack, Volvo W/ MP7 Engine

    Stainless Steel Diesel Particulate Filter Replaces 20869859, 20992181 For Mack, Volvo W/ MP7 Engine

    GLOBAL EMISSIONS

    $2,020.99
    Stainless Steel Diesel Particulate Filter Fits Mack & Volvo W/ MP7 Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually...
    29-080600018
    SKU:
    29-080600018
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Mack
    Make:
    Volvo
    Product Type:
    Exhaust
    $2,020.99
    Qty in Cart: 0
    Price:
    $2,020.99
    Subtotal:
  • BESTfit Cummins 5.9 L Flywheel 3921264, 3901395, 3900269

    BESTfit Cummins 5.9 L Flywheel 3921264, 3901395, 3900269

    BESTFIT TRUCK PARTS

    $257.99
    BESTfit Cummins Flywheels B Series - 5.9L SAE #2* High Quality Flywheel* Fits Cummins Flywheels B Series - 5.9L* Flat Design* 8 Bolt Mounting Holes* Size: SAE #2 * 14 Inch Clutch Size* 17 Inch OD...
    29-0733921263
    SKU:
    29-0733921263
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Style Options:
    Flat
    Diameter Options:
    17 Inch
    $257.99
    Qty in Cart: 0
    Price:
    $257.99
    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:
  • FREE SHIPPING OVER $249
    BESTfit 6 Inch Rubber Hood Strap W/ Hook

    BESTfit 6 Inch Rubber Hood Strap W/ Hook

    BESTFIT TRUCK PARTS

    $27.59
    BESTfit Hood Strap and Hook - Without BumperThis high quality 6 inch rubber and stainless steel hood strap and hook without a bumper is made in the USA. The strap comes with a one year warranty.*...
    09-092100
    SKU:
    09-092100
    Material Options:
    Rubber
    Color:
    Black
    Product Type:
    Hood Parts & Acc.
    Length Options:
    6 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $27.59
    Qty in Cart: 0
    Price:
    $27.59
    Subtotal:
  • Legacy Semi Seat Base - Lo Pro Air Suspension Base W/ Isolator For Silver & Gold Series Seats

    Legacy Semi Seat Base - Lo Pro Air Suspension Base W/ Isolator For Silver & Gold Series Seats

    SEATS INC

    $666.99
    Legacy LO Pro Seat Base By Seats Incorporated For Silver & Gold Series SeatsThis Legacy LO Pro Seat Base with Isolator is a quality replacement part for the Silver And Gold Series Seats. Find quality...
    178921PS
    SKU:
    178921PS
    Truck Class:
    Heavy Duty
    Color:
    Black
    Make:
    Universal Items
    Type Options:
    Low Base
    Product Type:
    Seats
    $666.99
    Qty in Cart: 0
    Price:
    $666.99
    Subtotal:
  • V-Band Clamp Kit Replaces 2871862

    V-Band Clamp Kit Replaces 2871862

    AUTOMANN USA

    $93.99
    Stainless Steel V-Band Clamp Kit W/ 13.375 Inch Nominal Diameter V- ClampThis high-performance V-Band Clamp Kit is engineered for Kenworth, Peterbilt, Freightliner, International, and Western Star...
    29-0809210
    SKU:
    29-0809210
    Material Options:
    Stainless Steel
    Product Type:
    Exhaust
    Make:
    Peterbilt
    Make:
    International
    Make:
    Kenworth
    Make:
    Freightliner
    Make:
    Western Star
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    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:
  • Chrome Steel Steering Wheel Horn Button

    Chrome Steel Steering Wheel Horn Button

    GRAND GENERAL

    $44.52
    Chrome Steel Steering Wheel Horn Button* High Quality Steering Wheel Horn Button* Chrome-Plated Steel* Sold Individually* Warranty On Steering Wheel Horn Buttons Against Defects In Workmanship &...
    09-1500921
    SKU:
    09-1500921
    Product Type:
    Interior
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $44.52
    Qty in Cart: 0
    Price:
    $44.52
    Subtotal:
  • Brass Split Ferrule Male 90 Degree Elbow 1/8 X 1/16 Inch

    Brass Split Ferrule Male 90 Degree Elbow 1/8 X 1/16 Inch

    TRAMEC SLOAN

    $5.09
    90 Degree Elbow Split Ferrule Transmission Fitting* High Quality Elbow* Split Ferrule Male * 90 Degree* Sold Individually* Warranty On Elbows Against Defects In Workmanship & Material From Date Of...
    SF6921
    SKU:
    SF6921
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    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
    Huck Adapter Sleeve - White 15/16 Inch ID X 1-1/4 Inch OD 10 Pack

    Huck Adapter Sleeve - White 15/16 Inch ID X 1-1/4 Inch OD 10 Pack

    AFTERMARKET

    $5.29
    White Plastic Huck Adapter Sleeve 15/16 Inch ID X 1-1/4 Inch OD 10 Pack* High Quality Nut Cover Huck Adapter* Adapter For Mounting Nut Covers Over Hucks * 1-1/4 Inch Outer Diameter* 15/16 Inch Inner...
    09-050609210
    SKU:
    09-050609210
    Color:
    White
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $5.29
    Qty in Cart: 0
    Price:
    $5.29
    Subtotal:
  • Minimizer Slick Plate 33 X 36 X 18.25 For Simplex II Models Fifth Wheels

    Minimizer Slick Plate 33 X 36 X 18.25 For Simplex II Models Fifth Wheels

    MINIMIZER

    $395.99
    5th Wheel Slick Plate Simplex Model II to Protect the 5th Wheel PlateThe Minimizer Slick Plate is designed for Simplex II Fifth Wheels. It measures 36.3 inches in width and 32.8 inches in height. The...
    09-051100921
    SKU:
    09-051100921
    Product Type:
    Frame & Chassis
    Height Options:
    32 Inch
    Width Options:
    36 Inch
    Make:
    Universal Items
    $395.99
    Qty in Cart: 0
    Price:
    $395.99
    Subtotal:
  • FREE SHIPPING OVER $249
    921 Incandescent Bulb W/ T-5 Wedge

    921 Incandescent Bulb W/ T-5 Wedge

    UNITED PACIFIC

    $5.99
    Incandescent Bulb 921 W/ 12.8 V* High Quality Incandescent Bulb* Includes:  - (2) No. 921 Bulb* T-5 Wedge 12.8V 1.4A 21CP (W16W)* Sold As Pack (2)* Warranty On Incandescent Bulbs Against Defects In...
    09-16000222
    SKU:
    09-16000222
    Product Type:
    Lighting
    Location:
    Made In USA
    Make:
    Universal Items
    $5.99
    Qty in Cart: 0
    Price:
    $5.99
    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:
  • 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:
  • 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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