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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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  • 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:
  • 3 Inch Stainless Steel Cab Panels W/ 8 - 2 Inch Light Holes For Peterbilt 386 W/ Cab-Mount Exhaust

    3 Inch Stainless Steel Cab Panels W/ 8 - 2 Inch Light Holes For Peterbilt 386 W/ Cab-Mount Exhaust

    PHOENIX DESIGN

    $151.99
    3 Inch Stainless Steel Cab Panels W/ 8 - 2 Inch Round Light Holes Fits Peterbilt 386 W/ Cab-Mount Exhaust* High Quality Cab Panels* Made Of 304 Stainless Steel* 4 - 2 Inch Round Light Holes Per Side*...
    01-091200930
    SKU:
    01-091200930
    Light Options:
    Without Lights
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Polished
    Length Options:
    40 Inch
    Product Type:
    Exterior
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • Grille Guard Mounting Brackets For Freightliner & Mercedes-Benz Sprinter Vans 2014-2017

    Grille Guard Mounting Brackets For Freightliner & Mercedes-Benz Sprinter Vans 2014-2017

    LUVERNE

    $231.99
    Brackets For Freightliner And Mercedes-Benz Sprinter Vans 2014-2017 (RT-205930)These grille guard brackets feature USA-made steel construction for maximum strength, and they are shielded in a...
    RT-205930
    SKU:
    RT-205930
    Product Type:
    Bumpers
    Material Options:
    Steel
    Color:
    Black
    Location:
    Made In USA
    Make:
    Freightliner
    Make:
    Other - Pickup Truck
    $231.99
    Qty in Cart: 0
    Price:
    $231.99
    Subtotal:
  • Kenworth W900L Day Cab Conversion W/ Full Interior, Rear Window, 6 Inch Extension

    Kenworth W900L Day Cab Conversion W/ Full Interior, Rear Window, 6 Inch Extension

    DAYCAB COMPANY

    $2,651.99
    Day Cab Conversion W/ Full Interior, Rear Window & 6 Inch Extension For Non Aerocab Models 2007-Older* High Quality Daycab Conversion* With 6 Inch Extension* Includes Full Interior Dome And Rear...
    02-093005
    SKU:
    02-093005
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Fiberglass
    Make:
    Kenworth
    Product Type:
    Exterior
    $2,651.99
    Qty in Cart: 0
    Price:
    $2,651.99
    Subtotal:
  • Aluminum Ultra Cab Day Cab Conversion Kit W/ Window For Peterbilt 378 & 379

    Aluminum Ultra Cab Day Cab Conversion Kit W/ Window For Peterbilt 378 & 379

    DAYCAB COMPANY

    $2,357.99
    Ultra Cab Day Cab Conversion Kit W/ Window Fits Peterbilt 378 & 379Enhance your Peterbilt Ultra Cab with this Aluminum Day Cab Conversion Kit, designed for 378 and 379 models to deliver a durable...
    01-0930023
    SKU:
    01-0930023
    Position:
    Kit Full
    Product Type:
    Exterior
    Cab Style:
    Ultra Cab
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Peterbilt
    $2,357.99
    Qty in Cart: 0
    Price:
    $2,357.99
    Subtotal:
  • Fibertech Day Cab Flat Panel Complete Conversion Kit W/ Black Interior For Peterbilt

    Fibertech Day Cab Flat Panel Complete Conversion Kit W/ Black Interior For Peterbilt

    FIBERTECH

    $2,456.99
    Peterbilt Day Cab Flat Panel W/ Aluminum Bracing, Window Trim, Rear Window Glass, & HardwareThe Day Cab Flat Panel Complete Conversion Kit with Black Interior adds an impressive 4 inches of extra leg...
    01-093007
    SKU:
    01-093007
    Truck Class:
    Heavy Duty
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    Product Type:
    Exterior
    $2,456.99
    Qty in Cart: 0
    Price:
    $2,456.99
    Subtotal:
  • 4 Inch Fiberglass High Roof Day Cab Conversion Kit W/ Window For Peterbilt 567 & 579

    4 Inch Fiberglass High Roof Day Cab Conversion Kit W/ Window For Peterbilt 567 & 579

    DAYCAB COMPANY

    $3,030.99
    4 Inch High Roof Day Cab Conversion Kit W/ Window Fits Peterbilt 567 & 579Give your Peterbilt a sleek upgrade with this 4 Inch Fiberglass High Roof Day Cab Conversion Kit with Window for 567 and 579...
    01-0930041
    SKU:
    01-0930041
    Position:
    Kit Full
    Material Options:
    Fiberglass
    Product Type:
    Exterior
    Cab Style:
    Day Cab
    Make:
    Peterbilt
    $3,030.99
    Qty in Cart: 0
    Price:
    $3,030.99
    Subtotal:
  • Fiberglass Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window For Peterbilt

    Fiberglass Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window For Peterbilt

    DAYCAB COMPANY

    $2,766.99
    Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window Fits PeterbiltUpgrade your Peterbilt with this Fiberglass Unibilt XL Standard Day Cab Conversion Kit with a 6 Inch Extended...
    01-0930042
    SKU:
    01-0930042
    Material Options:
    Fiberglass
    Position:
    Kit Full
    Product Type:
    Exterior
    Cab Style:
    Unibilt
    Style Options:
    Flat Top
    Make:
    Peterbilt
    $2,766.99
    Qty in Cart: 0
    Price:
    $2,766.99
    Subtotal:
  • Fibertech 6 Inch Extended Day Cab Deluxe Conversion Kit W/ 19 X 36 Inch Rear Window For Peterbilt Ultracab

    Fibertech 6 Inch Extended Day Cab Deluxe Conversion Kit W/ 19 X 36 Inch Rear Window For Peterbilt Ultracab

    FIBERTECH

    $2,688.99
    6 Inch Extended Day Cab Deluxe Conversion Kit W/ 19 X 36 Inch Rear Window Fits Peterbilt UltracabThis aftermarket 6-inch fiberglass cab extension adds 4 inches of extra legroom, giving you more...
    01-0930010
    SKU:
    01-0930010
    Truck Class:
    Heavy Duty
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    Finish Options:
    Paintable
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $2,688.99
    Qty in Cart: 0
    Price:
    $2,688.99
    Subtotal:
  • Fiberglass Ultra Cab XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab For Peterbilt 378, 379, 388 & 389 UltraCab

    Fiberglass Ultra Cab XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab For Peterbilt 378, 379, 388 & 389 UltraCab

    DAYCAB COMPANY

    $2,509.99
    Ultra Cab XL Standard Day Cab Conversion Kit Fiberglass W/ 6 Inch Extended Cab Fits Peterbilt 378, 379, 388 & 389 UltraCabAdd strength, style, and functionality to your Peterbilt with this Fiberglass...
    01-0930017
    SKU:
    01-0930017
    Cab Style:
    Ultra Cab
    Product Type:
    Exterior
    Truck Class:
    Heavy Duty
    Position:
    Kit Full
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    $2,509.99
    Qty in Cart: 0
    Price:
    $2,509.99
    Subtotal:
  • Fiberglass Day Cab Conversion Kit W/ 4 Inch Extended Back & 19 X 36 Inch Window For Peterbilt 567, 579 Ultra Cab

    Fiberglass Day Cab Conversion Kit W/ 4 Inch Extended Back & 19 X 36 Inch Window For Peterbilt 567, 579 Ultra Cab

    DAYCAB COMPANY

    $3,030.99
    Peterbilt 567 & 579 Ultracab Day Cab Conversion Kit W/ 4 Inch Extended Back & 19 X 36 Inch WindowStep into a cleaner day cab configuration with this Fiberglass Conversion Kit made specifically for...
    01-093000013
    SKU:
    01-093000013
    Position:
    Kit Full
    Material Options:
    Fiberglass
    Product Type:
    Exterior
    Cab Style:
    Ultra Cab
    Make:
    Peterbilt
    $3,030.99
    Qty in Cart: 0
    Price:
    $3,030.99
    Subtotal:
  • Sanguine Full Upholstery Kit For Peterbilt 379 W/ 63 Inch Flat Top Sleeper

    Sanguine Full Upholstery Kit For Peterbilt 379 W/ 63 Inch Flat Top Sleeper

    DAYCAB COMPANY

    $8,142.99
    Peterbilt 379 Full Upholstery Kit- SanguineMake a powerful interior statement with this Sanguine Full Upholstery Kit for the Peterbilt 379 63-inch Flat Top Sleeper. Crafted from premium vinyl, it...
    01-093000025
    SKU:
    01-093000025
    Color:
    Red
    Material Options:
    Vinyl
    Product Type:
    Interior
    Make:
    Peterbilt
    $8,142.99
    Qty in Cart: 0
    Price:
    $8,142.99
    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:
  • Stainless Steel Diesel Particulate Filter Replaces 2603961C91 For International W/ MaxxForce 13 Engine

    Stainless Steel Diesel Particulate Filter Replaces 2603961C91 For International W/ MaxxForce 13 Engine

    GLOBAL EMISSIONS

    $2,267.99
    Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce 13 Engine - Replaces 2603961C91* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...
    07-080600009
    SKU:
    07-080600009
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    International
    Product Type:
    Exhaust
    $2,267.99
    Qty in Cart: 0
    Price:
    $2,267.99
    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:
  • Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab

    Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab

    FIBERTECH

    $2,455.99
    Day Cab Flat Panel Complete Conversion Kit* High Quality Flat Panel Conversion Kit* Includes:  - One-piece Fiberglass Panel  - Bonded 1 Inch x 2 Inch Aluminum Bracing  - Fiberglass Interior Window...
    01-0930036
    SKU:
    01-0930036
    Product Type:
    Exterior
    Truck Class:
    Heavy Duty
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    $2,455.99
    Qty in Cart: 0
    Price:
    $2,455.99
    Subtotal:
  • Extended Day Cab Basic Interior Seal Kit For Kenworth T600, T800, W900B, W900L

    Extended Day Cab Basic Interior Seal Kit For Kenworth T600, T800, W900B, W900L

    FIBERTECH

    $514.07
    Basic Kit Factory Replacement Interior Seal Kit* High Quality Interior Seal Kit* Includes:  - OE Seal  - (2) Cab And Sleeper Trim* 3 Piece* Sold As Kit* Warranty On Interior Seal Kits Against Defects...
    02-093003
    SKU:
    02-093003
    Product Type:
    Exterior
    Material Options:
    Fiberglass
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Ready To Ship:
    Yes
    $514.07
    Qty in Cart: 0
    Price:
    $514.07
    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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