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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

    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

    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 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. 

    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

    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

    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

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  • Stainless Steel Diesel Particulate Filter Replaces CP232717 For International W/ MaxxForce 13 Engine

    Stainless Steel Diesel Particulate Filter Replaces CP232717 For International W/ MaxxForce 13 Engine

    GLOBAL EMISSIONS

    $2,235.99
    Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce 13 Engine - Replaces CP232717* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...
    07-080600008
    SKU:
    07-080600008
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    International
    Product Type:
    Exhaust
    $2,235.99
    Qty in Cart: 0
    Price:
    $2,235.99
    Subtotal:
  • Stainless Front Air Cleaner Panels W/ 6 P1 Amber/Amber LEDs For Freightliner Classic XL W/ 11 Inch Nelson

    Stainless Front Air Cleaner Panels W/ 6 P1 Amber/Amber LEDs For Freightliner Classic XL W/ 11 Inch Nelson

    PHOENIX DESIGN

    $239.99
    Front Air Cleaner Panels W/ 6 P1 Amber LED Amber Lens Lights Fit Freightliner Classic XL W/ 11 Inch Nelson* High Quality Front Air Cleaner Panel * Made Of 304 Stainless Steel * 3 P1 Lights Per Side*...
    03-090500008
    SKU:
    03-090500008
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Freightliner
    Finish Options:
    Polished
    Position:
    Front
    Light Options:
    With Lights
    Product Type:
    Exterior
    $239.99
    Qty in Cart: 0
    Price:
    $239.99
    Subtotal:
  • High Flow Performance Air Filter With Washable Element Media For GM, Freightliner, Mack, Western Star - Pair

    High Flow Performance Air Filter With Washable Element Media For GM, Freightliner, Mack, Western Star - Pair

    FLEET FILTERS

    $839.99
    High Performance Air Filter Media Fits GM, Freightliner, Mack, Western Star - PairYou never need to waste money on paper filters again! 4 State Trucks proudly offers Fleet Air Filters, the only...
    29-090500008
    SKU:
    29-090500008
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Exterior
    $839.99
    Qty in Cart: 0
    Price:
    $839.99
    Subtotal:
  • 17 Inch Shock Strap W/ 14.370 Inch Travel Limit Replaces C2404111, C-24041-11 For Hendrickson Trailer

    17 Inch Shock Strap W/ 14.370 Inch Travel Limit Replaces C2404111, C-24041-11 For Hendrickson Trailer

    AFTERMARKET

    $16.64
    Shock Strap With 14.37 Inch Travel LimitSupport your Hendrickson trailer suspension with the 17 Inch Shock Strap with 14.370 Inch Travel Limit, engineered to replace C2404111, C-24041-11. With 14...
    19-05000008
    SKU:
    19-05000008
    Length Options:
    14 1/4 Inch
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Trailer
    Product Type:
    Trailer
    $16.64
    Qty in Cart: 0
    Price:
    $16.64
    Subtotal:
  • FREE SHIPPING OVER $249
    DEF Filter Kit W/ Element, Cartridge & End Cap Replaces 4388378, 5579176 For Freightliner

    DEF Filter Kit W/ Element, Cartridge & End Cap Replaces 4388378, 5579176 For Freightliner

    AFTERMARKET

    $113.99
    DEF Filter Kit W/ Element, Cartridge & End Cap By Freightliner Replaces 4388378, 5579176Restore proper DEF system filtration with this premium DEF Filter Kit, a direct replacement for Freightliner...
    03-06070008
    SKU:
    03-06070008
    Product Type:
    Fuel Tanks
    $113.99
    Qty in Cart: 0
    Price:
    $113.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 1.5 Inch Oil Filler Cap W/ T Handle

    TPHD 1.5 Inch Oil Filler Cap W/ T Handle

    TURNPIKE TRUCK TRIM

    $10.94
    Oil Filler Cap By TPHDMaintain peak engine performance with the TPHD 1.5 Inch Oil Filler Cap with T Handle, a high-quality, durable solution for your truck. Its secure design prevents oil leaks and...
    09-072008
    SKU:
    09-072008
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $10.94
    Qty in Cart: 0
    Price:
    $10.94
    Subtotal:
  • Filter Wrench Ratcheting Chain

    Filter Wrench Ratcheting Chain

    AUTOMANN USA

    $51.99
    Filter Wrench Racheting Chain* High Quality Ratcheting Chain* Fits 3 Inch Thru 4.5 Inch Diameters* Sold Individually* Warranty On Ratcheting Chain Against Defects In Workmanship & Material From Date...
    09-2100088
    SKU:
    09-2100088
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Power Steering Reservoir J86-1045-008 For Kenworth T680 , Peterbilt 579

    Power Steering Reservoir J86-1045-008 For Kenworth T680 , Peterbilt 579

    AFTERMARKET

    $312.99
    Power Steering Reservoir ReplacementThis replacement power steering reservoir is designed for select Kenworth and Peterbilt trucks. The reservoir comes with a cap, cover, gasket, and clamp to replace...
    29-07120011
    SKU:
    29-07120011
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $312.99
    Qty in Cart: 0
    Price:
    $312.99
    Subtotal:
  • Engine Fuel Filter Cap Replaces A4720920408, A472092708 For Detroit Diesel DD15 EPA07 EPA10

    Engine Fuel Filter Cap Replaces A4720920408, A472092708 For Detroit Diesel DD15 EPA07 EPA10

    AFTERMARKET

    $57.99
    Engine Fuel Filter Cap* High Quality Filter Cap * Sold Individually* Warranty On Filter Caps Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement...
    29-07120008
    SKU:
    29-07120008
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $57.99
    Qty in Cart: 0
    Price:
    $57.99
    Subtotal:
  • Roadworks 11 X 13 Inch Stainless Steel Intimidator Contender Bowtie Drop Visor For Kenworth W900B, W900L W/ Flat Glass

    Roadworks 11 X 13 Inch Stainless Steel Intimidator Contender Bowtie Drop Visor For Kenworth W900B, W900L W/ Flat Glass

    ROADWORKS

    $464.99
    11 X 13 Inch Stainless Steel Intimidator Contender Bowtie Drop Visor By Roadworks Fits Kenworth W900B, W900L W/ Flat Glass* High Quality Bowtie Visor* Intimidator Contender Series* Made Of Stainless...
    02-090100008
    SKU:
    02-090100008
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Light Options:
    Without Lights
    Height Options:
    13 Inch
    Product Type:
    Exterior
    Cab Style:
    Flat Windshield
    $464.99
    Qty in Cart: 0
    Price:
    $464.99
    Subtotal:
  • Roadworks 11 X 13 Inch Stainless Steel Monster Drop Bowtie Visor For Peterbilt W/ Curved Glass

    Roadworks 11 X 13 Inch Stainless Steel Monster Drop Bowtie Visor For Peterbilt W/ Curved Glass

    ROADWORKS

    $468.99
    11 X 13 Inch Stainless Steel Monster Drop Bowtie Visor By Roadworks Fits Peterbilt W/ Curved GlassMake your Peterbilt 389 stand out with the 13 to 11 Inch Stainless Steel Monster Drop Bowtie Visor,...
    01-090100008
    SKU:
    01-090100008
    Height Options:
    13 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Style Options:
    Bow Tie
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Light Options:
    Without Lights
    Product Type:
    Exterior
    $468.99
    Qty in Cart: 0
    Price:
    $468.99
    Subtotal:
  • 30 Inch Fan Blade W/ 11 Blades Replaces 4735-44003-14

    30 Inch Fan Blade W/ 11 Blades Replaces 4735-44003-14

    OPP - ORIGINAL PARTS PROGRAM

    $322.99
    Engine Cooling Fan Blade* High Quality Fan Blade* 30 Inch * Width 3.62 * Pilot Dia. 2.562* Bolt Circle 3.50* With 11 Blades* Sold Individually* Warranty On Fan Blades Against Defects In Workmanship &...
    29-0706008
    SKU:
    29-0706008
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Engine Parts
    $322.99
    Qty in Cart: 0
    Price:
    $322.99
    Subtotal:
  • BESTfit Black Grille 34.5 X 58 Inch W/ Bug Screen For Freightliner Cascadia 116 & 126 Replaces A17-20832-008

    BESTfit Black Grille 34.5 X 58 Inch W/ Bug Screen For Freightliner Cascadia 116 & 126 Replaces A17-20832-008

    BESTFIT TRUCK PARTS

    $409.99
    34.5 X 58 Inch Black Grille W/ Bug Screen By BESTfit Replaces A17-20832-008 Fits Freightliner Cascadia 116 & 126The BESTfit Black Grille with Bug Screen combines heavy-duty protection and...
    03-1210330
    SKU:
    03-1210330
    Color:
    Black
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Length Options:
    34 Inch
    Product Type:
    Hood Parts & Acc.
    Width Options:
    58 Inch
    $409.99
    Qty in Cart: 0
    Price:
    $409.99
    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:
  • Grille Logo Clip W/O Logo Emblem Replaces 23-09457-008, AUV8868 For Freightliner

    Grille Logo Clip W/O Logo Emblem Replaces 23-09457-008, AUV8868 For Freightliner

    AUTOMANN USA

    $2.53
    Freightliner Replacement Grille Logo Clip OnlySecure your Freightliner grille emblem with confidence using this high-quality Grille Logo Clip, compatible with 23-09457-008 and AUV8868. Its 0.625-inch...
    03-1210339
    SKU:
    03-1210339
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Product Type:
    Hood Parts & Acc.
    $2.53
    Qty in Cart: 0
    Price:
    $2.53
    Subtotal:
  • 20 X 13.9 X 17 Inch Heavy Duty Diesel Particulate Filter - Replaces 4965229, 4965286, 4965286NX, 4969838

    20 X 13.9 X 17 Inch Heavy Duty Diesel Particulate Filter - Replaces 4965229, 4965286, 4965286NX, 4969838

    DAYTON / DORMAN

    $2,675.99
    Heavy Duty DPF - Replaces 4969838NX, 4969839, 4969839NX, Q621371, Q623316 & Q623804* High Quality DPF* Body Height: 20 Inch* Body Length: 13.9 Inch* Body Material: Stainless Steel* Body Width: 17...
    29-080600008
    SKU:
    29-080600008
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Make:
    Kenworth
    Product Type:
    Exhaust
    $2,675.99
    Qty in Cart: 0
    Price:
    $2,675.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Fuel Tank Strap W/ Opposing Midpoint Brackets Replaces 3676585C1 For International ProStar

    BESTfit Fuel Tank Strap W/ Opposing Midpoint Brackets Replaces 3676585C1 For International ProStar

    BESTFIT TRUCK PARTS

    $177.99
    Fuel Tank Strap Used W/ M203852 Isolator By BESTfit Fits International ProStarProtect your fuel tank and maintain truck safety with the BESTfit Fuel Tank Strap with Opposing Midpoint Brackets for the...
    07-0601008
    SKU:
    07-0601008
    Truck Class:
    Heavy Duty
    Make:
    International
    Product Type:
    Fuel Tanks
    $177.99
    Qty in Cart: 0
    Price:
    $177.99
    Subtotal:
  • Low Pressure AC Switch - 18-03599 For Kenworth, Peterbilt

    Low Pressure AC Switch - 18-03599 For Kenworth, Peterbilt

    AFTERMARKET

    $67.99
    Normally Open Air Conditioning Low Pressure Switch Paccar* High Quality Low Pressure AC Switch* 7.75 Inch Length* Sensors / Switches Control The Ac Compressor* Fan And Expansion Valve For An...
    29-07100008
    SKU:
    29-07100008
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Make:
    Kenworth
    Product Type:
    Engine Parts
    $67.99
    Qty in Cart: 0
    Price:
    $67.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 41.5 Inch Hood Strap Replaces A17-12994-003, A17-20380-008 For Freightliner Cascadia

    BESTfit 41.5 Inch Hood Strap Replaces A17-12994-003, A17-20380-008 For Freightliner Cascadia

    BESTFIT TRUCK PARTS

    $30.92
    BESTfit Hood Strap Fits FreightlinerKeep your hood properly secured with the BESTfit 41.5 Inch Hood Strap, a precision replacement for Freightliner Cascadia trucks. Designed to replace OEM...
    03-124028
    SKU:
    03-124028
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Color:
    Black
    Material Options:
    Polyester
    Product Type:
    Hood Parts & Acc.
    Ready To Ship:
    Yes
    $30.92
    Qty in Cart: 0
    Price:
    $30.92
    Subtotal:
  • Wear Gage 2-11/16 Inch For 2880 Coupling

    Wear Gage 2-11/16 Inch For 2880 Coupling

    PREMIER

    $38.47
    2 11/16 Inch Wear Gage* High Quality Wear Gauge * 2-11/16 Inch* For Use With 2880 Coupling* Made In USA* Sold Individually* Warranty On Wear Gages Against Defects In Workmanship & Material From Date...
    09-051100859
    SKU:
    09-051100859
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $38.47
    Qty in Cart: 0
    Price:
    $38.47
    Subtotal:
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