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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

    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

    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

    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

    Blatant Signs Your Turbocharger is Failing (And When to Replace it) (Post)

    If your semi truck turbocharger is failing, you'll encounter a few common signs. In this post, we'll cover what those are, and similar symptoms that aren't actually the turbo, but a related part.  Sig

    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

    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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  • 35 X 79 X 6.5 Inch Convoluted Gel Foam Truck Mattress For International & Volvo

    35 X 79 X 6.5 Inch Convoluted Gel Foam Truck Mattress For International & Volvo

    OPP - ORIGINAL PARTS PROGRAM

    $216.99
    35 X 79 X 6.5 Inch Convoluted Gel Foam MattressThe Convoluted Gel Foam Truck Mattress measures 6.5 x 35 x 79 inches and features a practical one-sided design. It consists of a 4.5-inch convoluted...
    29-154500011
    SKU:
    29-154500011
    Length Options:
    79 Inch
    Truck Class:
    Heavy Duty
    Color:
    Black
    Width Options:
    35 Inch
    Make:
    International
    Make:
    Volvo
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $216.99
    Qty in Cart: 0
    Price:
    $216.99
    Subtotal:
  • Actuator Dump Pump- Metering

    Actuator Dump Pump- Metering

    AFTERMARKET

    $289.99
    Actuator Dump Pump Replaces C-3805-DM, C3805DM* High Quality Actuator Dump Pump* Metering* Hardware Included* Sold Individually* Warranty On Actuator Dump Pumps Against Defects In Workmanship &...
    09-02500154
    SKU:
    09-02500154
    Product Type:
    Cargo Control
    Make:
    Universal Items
    $289.99
    Qty in Cart: 0
    Price:
    $289.99
    Subtotal:
  • 35 X 79 X 7.5 Inch Gray Camouflage Bed Sheet Set For Mack & Volvo

    35 X 79 X 7.5 Inch Gray Camouflage Bed Sheet Set For Mack & Volvo

    JAKES CAB SOLUTIONS

    $46.27
    Camouflage Bed Sheet Set Fits Mack & Volvo* High Quality Bed Sheet Set* 35 X 79 X 7.5 Inch * 4 Pieces Include:  - 2? Pillow Cases  - 1 Fitted Sheet With 2 Pockets On Each Side For Easy Storage*...
    29-1546021
    SKU:
    29-1546021
    Length Options:
    35 Inch
    Color:
    Camo
    Width Options:
    79 Inch
    Truck Class:
    Heavy Duty
    Height Options:
    7 Inch
    Make:
    Mack
    Make:
    Volvo
    Product Type:
    Interior
    $46.27
    Qty in Cart: 0
    Price:
    $46.27
    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:
  • 32 X 79 Inch Mattress W/ 7 Inch Base Height & 1 Inch C-Gell Height

    32 X 79 Inch Mattress W/ 7 Inch Base Height & 1 Inch C-Gell Height

    DESIGNS INTERNATIONAL

    $302.99
    Mattress 32 X 79 Inch W/ 7 Inch Base Height & 1 Inch C-Gell Height* High Quality Mattress* Includes:  - 7 Inch Base Height  - 1 Inch C-Gell Height* Dimensions:  - 32 Inch Length Of The Truck  - 79...
    29-1545007
    SKU:
    29-1545007
    Product Type:
    Interior
    Height Options:
    8 Inch
    Width Options:
    79 Inch
    Length Options:
    32 Inch
    Make:
    Universal Items
    $302.99
    Qty in Cart: 0
    Price:
    $302.99
    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
    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 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
    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
    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
    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:
  • Stainless Steel Wrapped Cab Panels W/ 16 P3 Amber/Clear LEDs For Peterbilt 378, 379, 388, 389

    Stainless Steel Wrapped Cab Panels W/ 16 P3 Amber/Clear LEDs For Peterbilt 378, 379, 388, 389

    PHOENIX DESIGN

    $508.99
    Stainless Steel Wrapped Cab Panels W/ 16 P3 Amber LED Clear Lens Lights Fit Peterbilt 378, 379, 388 & 389* High Quality Cab Panel* Made Of 304 Stainless Steel* 8 P3 Lights Per Side* Amber LED/Clear...
    01-091201154
    SKU:
    01-091201154
    Light Options:
    With Lights
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Paintable
    Length Options:
    58 Inch
    Product Type:
    Exterior
    $508.99
    Qty in Cart: 0
    Price:
    $508.99
    Subtotal:
  • 2.09 X 7.15 Inch Stainless Steel Radio Face Plate For Peterbilt 359

    2.09 X 7.15 Inch Stainless Steel Radio Face Plate For Peterbilt 359

    PHOENIX DESIGN

    $35.69
    2.09 X 7.15 Inch Stainless Steel Radio Face Plate Fits Peterbilt 359* High Quality Radio Face Plate* Made Of 304 Stainless Steel * Inside Measurements: - 2.09 Inch X 7.15 Inch * Sold Individually *...
    01-150100154
    SKU:
    01-150100154
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Peterbilt
    Product Type:
    Electronics
    Ready To Ship:
    Yes
    $35.69
    Qty in Cart: 0
    Price:
    $35.69
    Subtotal:
  • 5 Drawer Storage Solution 14 X 38 X 18.5 Inch For Peterbilt

    5 Drawer Storage Solution 14 X 38 X 18.5 Inch For Peterbilt

    IOWA CUSTOMS

    $1,167.99
    Stainless Steel 5 Drawer Storage Solution Fits Peterbilt* High Quality 5 Drawer Storage Solution* Made Of Stainless Steel* Heavy Duty* Full Extend Ball Bearing Drawer Slides With Stay Close...
    01-1540015
    SKU:
    01-1540015
    Length Options:
    14 Inch
    Height Options:
    38 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Interior
    $1,167.99
    Qty in Cart: 0
    Price:
    $1,167.99
    Subtotal:
  • Refrigerator Mounting Trim Kit For 2008 Through 2015 Peterbilt 389 Flat Top W/ 63 Inch Sleepers

    Refrigerator Mounting Trim Kit For 2008 Through 2015 Peterbilt 389 Flat Top W/ 63 Inch Sleepers

    IOWA CUSTOMS

    $5.09
    Refrigerator Mounting Trim Kit* High Quality Refrigerator Mounting Trim Kit* For Refrigerator Mounting* Made In USA* Sold Individually* Warranty On Refrigerator Mounting Trim Kits Against Defects In...
    01-1540028
    SKU:
    01-1540028
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Interior
    Ready To Ship:
    Yes
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    Subtotal:
  • Flange Kit For CX50 Iowa Customs Refrigerator For Peterbilt 389 Sleepers 2008 -2012

    Flange Kit For CX50 Iowa Customs Refrigerator For Peterbilt 389 Sleepers 2008 -2012

    IOWA CUSTOMS

    $62.99
    Peterbilt 389 Refrigerator Flange Kit For CR-50Fill in the gaps around your CX50 Iowa Customs Refrigerator with this flange kit. Designed specifically for Peterbilt 389 trucks from 2008 through 2012,...
    01-1540033
    SKU:
    01-1540033
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Interior
    Finish Options:
    Polished
    Color:
    Black
    $62.99
    Qty in Cart: 0
    Price:
    $62.99
    Subtotal:
  • Stainless Steel 3 Drawer Solution Fridge & Trim Kit For Peterbilt 379 Driver Side 1987-2007

    Stainless Steel 3 Drawer Solution Fridge & Trim Kit For Peterbilt 379 Driver Side 1987-2007

    IOWA CUSTOMS

    $2,739.99
    Stainless Steel 3 Drawer Solution Fridge & Trim Kit* High Quality Fridge And Trim Kit* Driver Side* For 63 Inch Sleeper* Sold Individually* Warranty On Fridge And Trim Kit Against Defects In...
    01-1540039
    SKU:
    01-1540039
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    $2,739.99
    Qty in Cart: 0
    Price:
    $2,739.99
    Subtotal:
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