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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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  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 2888249NX, 4969542NX, 4965317NX For Cummins ISX Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 2888249NX, 4969542NX, 4965317NX For Cummins ISX Engine

    GLOBAL EMISSIONS

    $2,264.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600054
    SKU:
    29-080600054
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $2,264.99
    Qty in Cart: 0
    Price:
    $2,264.99
    Subtotal:
  • AC Machine Spin-On Recycling Filter Dryer For Robinair

    AC Machine Spin-On Recycling Filter Dryer For Robinair

    AFTERMARKET

    $137.99
    Replacement Air Conditioner Recovery and Recycling Machine Filter DrierThe A/C Recycling Spin On Filter Dryer is the perfect solution for keeping your air conditioning system running smoothly. This...
    09-07000005
    SKU:
    09-07000005
    Truck Class:
    Heavy Duty
    Length Options:
    12 Inch
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $137.99
    Qty in Cart: 0
    Price:
    $137.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965284NX, 5287496NX For Cummins ISC/ISL Engines

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965284NX, 5287496NX For Cummins ISC/ISL Engines

    GLOBAL EMISSIONS

    $2,105.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISC & ISL Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability*...
    29-080600052
    SKU:
    29-080600052
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $2,105.99
    Qty in Cart: 0
    Price:
    $2,105.99
    Subtotal:
  • Stainless Steel Diesel Particulate Filter Replaces 2594165C91 For International W/ MaxxForce 7/DT Engine

    Stainless Steel Diesel Particulate Filter Replaces 2594165C91 For International W/ MaxxForce 7/DT Engine

    GLOBAL EMISSIONS

    $1,905.99
    Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce 7/DT Engines - Replaces 2594165C91* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...
    07-080600005
    SKU:
    07-080600005
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    International
    Product Type:
    Exhaust
    $1,905.99
    Qty in Cart: 0
    Price:
    $1,905.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Lower Extender Filler Panel For Freightliner Cascadia Replaces 22-69771-004 & 22-69771-005

    Lower Extender Filler Panel For Freightliner Cascadia Replaces 22-69771-004 & 22-69771-005

    OPP - ORIGINAL PARTS PROGRAM

    $41.61 - $48.89
    Protect and complete your Cascadia's exterior with the Lower Extender Filler Panel, engineered to replace 22-69771-004 and 22-69771-005 for a secure, precise fit. Available in driver and passenger...
    PPR_200574
    SKU:
    PPR_200574
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Material Options:
    Plastic/Poly
    Product Type:
    Exterior
    $41.61 - $48.89
    Qty in Cart: 0
    Price:
    $41.61 - $48.89
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 5287480NX, 4965285NX For Cummins ISB Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 5287480NX, 4965285NX For Cummins ISB Engine

    GLOBAL EMISSIONS

    $1,759.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISB Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600058
    SKU:
    29-080600058
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $1,759.99
    Qty in Cart: 0
    Price:
    $1,759.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965223NX, 5287521 For Cummins ISM Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965223NX, 5287521 For Cummins ISM Engine

    GLOBAL EMISSIONS

    $1,972.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISM Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600055
    SKU:
    29-080600055
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $1,972.99
    Qty in Cart: 0
    Price:
    $1,972.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965304NX, 2888247NX For Cummins ISX Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965304NX, 2888247NX For Cummins ISX Engine

    GLOBAL EMISSIONS

    $2,398.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine* High Quality Diesel Particulate Filter* Made Of 304 Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600057
    SKU:
    29-080600057
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $2,398.99
    Qty in Cart: 0
    Price:
    $2,398.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 2888248, 4965225NX For Cummins ISX Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 2888248, 4965225NX For Cummins ISX Engine

    GLOBAL EMISSIONS

    $2,362.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually...
    29-080600056
    SKU:
    29-080600056
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Product Type:
    Exhaust
    Make:
    Universal Items
    $2,362.99
    Qty in Cart: 0
    Price:
    $2,362.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965243NX, 5287191NX, A035G674 For Cummins ISM Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965243NX, 5287191NX, A035G674 For Cummins ISM Engine

    GLOBAL EMISSIONS

    $2,175.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISM Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...
    29-080600053
    SKU:
    29-080600053
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $2,175.99
    Qty in Cart: 0
    Price:
    $2,175.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 21716414, 21716416 For Volvo/Mack MP7, MP8 Engines

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 21716414, 21716416 For Volvo/Mack MP7, MP8 Engines

    GLOBAL EMISSIONS

    $2,324.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Volvo/Mack MP7 & MP8 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For...
    29-080600050
    SKU:
    29-080600050
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Mack
    Make:
    Volvo
    Product Type:
    Exhaust
    $2,324.99
    Qty in Cart: 0
    Price:
    $2,324.99
    Subtotal:
  • 1-Piece Stainless Steel Diesel Particulate Filter Replaces 5579356, 5295605 For Cummins ISX Engine

    1-Piece Stainless Steel Diesel Particulate Filter Replaces 5579356, 5295605 For Cummins ISX Engine

    GLOBAL EMISSIONS

    $1,971.99
    1-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually...
    29-080600051
    SKU:
    29-080600051
    Truck Class:
    Heavy Duty
    Style Options:
    Cummins
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $1,971.99
    Qty in Cart: 0
    Price:
    $1,971.99
    Subtotal:
  • High Flow Performance Air Filter With Washable Element Media For PACCAR, GM, Freightliner, Mack - Pair

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

    FLEET FILTERS

    $839.99
    High Performance Air Filter Media Fits PACCAR, GM, Freightliner, Mack - PairYou never need to waste money on paper filters again! 4 State Trucks proudly offers Fleet Air Filters, the only lifetime,...
    29-090500005
    SKU:
    29-090500005
    Truck Class:
    Heavy Duty
    Make:
    GMC
    Make:
    Freightliner
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Bus
    Make:
    Mack
    Product Type:
    Exterior
    $839.99
    Qty in Cart: 0
    Price:
    $839.99
    Subtotal:
  • Power Steering Pump Replaces 1419126005, 14-19126-005, 1414323005, 14-14323-005 For Freightliner

    Power Steering Pump Replaces 1419126005, 14-19126-005, 1414323005, 14-14323-005 For Freightliner

    AFTERMARKET

    $514.99
    EV Type Power Steering Pump Replaces 1419126005, 14-19126-005, 1414323005, 14-14323-005Keep your Freightliner truck steering responsive with this TRW-EV Type Power Steering Pump, compatible with...
    29-07120042
    SKU:
    29-07120042
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    Freightliner
    $514.99
    Qty in Cart: 0
    Price:
    $514.99
    Subtotal:
  • BESTfit Cabin Air Filter- 9 X 13.875 X 1 Inch Replaces 68012876AA For Freightliner Sprinter Van 2500 / 3500

    BESTfit Cabin Air Filter- 9 X 13.875 X 1 Inch Replaces 68012876AA For Freightliner Sprinter Van 2500 / 3500

    BESTFIT TRUCK PARTS

    $31.74
    9 X 13.875 X 1 Inch Cabin Air Filter By BESTfit Fits FreightlinerDon't let dust and debris compromise your driving comfort-choose the BESTfit 9 x 13.875 x 1 Inch Cabin Air Filter for Freightliner...
    03-150300005
    SKU:
    03-150300005
    Height Options:
    9 Inch
    Length Options:
    13 Inch
    Make:
    Freightliner
    Product Type:
    Interior
    Truck Class:
    Light Duty
    $31.74
    Qty in Cart: 0
    Price:
    $31.74
    Subtotal:
  • Cabin Air Filter, 5 X 10 Inch For Freightliner Century

    Cabin Air Filter, 5 X 10 Inch For Freightliner Century

    AUTOMANN USA

    $8.09
    Freightliner Cabin Air FilterEnsure the air in your vehicle is fresh and pollutant-free with the cabin air filter. Designed to keep out pollen, dust, odors, and other harmful particles, it guarantees...
    03-0713005
    SKU:
    03-0713005
    Length Options:
    10 Inch
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Interior
    $8.09
    Qty in Cart: 0
    Price:
    $8.09
    Subtotal:
  • BESTfit Diesel Particulate Filter For Cummins ISC Engine Replaces 3103617, 3978026, 52954

    BESTfit Diesel Particulate Filter For Cummins ISC Engine Replaces 3103617, 3978026, 52954

    BESTFIT TRUCK PARTS

    $1,952.99
    Diesel Particulate Filter By BESTfit Replaces 3103617, 3978026, 52954 Fits Cummins ISC EngineMaintain peak emissions performance with the BESTfit Volvo/Mack Diesel Particulate Filter (DPF), designed...
    29-08090056
    SKU:
    29-08090056
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $1,952.99
    Qty in Cart: 0
    Price:
    $1,952.99
    Subtotal:
  • 34 X 27.5 Inch Stainless Steel Diesel Particulate Filter For International

    34 X 27.5 Inch Stainless Steel Diesel Particulate Filter For International

    DAYTON / DORMAN

    $2,476.99
    Heavy Duty Diesel Particulate Filter Fits InternationalImprove your International truck's exhaust efficiency with this robust Stainless Steel Diesel Particulate Filter. Standard-grade and built to...
    07-0809005
    SKU:
    07-0809005
    Truck Class:
    Heavy Duty
    Make:
    International
    Product Type:
    Exhaust
    $2,476.99
    Qty in Cart: 0
    Price:
    $2,476.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Plastic Bumper Ends For Freightliner Columbia 112/120

    BESTfit Plastic Bumper Ends For Freightliner Columbia 112/120

    BESTFIT TRUCK PARTS

    $75.99
    For a cost effective and high?quality solution to bumper end replacement on your Freightliner Columbia?112 or?120, install the BESTfit Plastic Bumper End. Designed to replace OE numbers?21-26021-004...
    PPR_200552
    SKU:
    PPR_200552
    Truck Class:
    Heavy Duty
    Position:
    Driver Side
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Product Type:
    Bumpers
    Color:
    Black
    Position:
    Passenger Side
    Ready To Ship:
    Yes
    $75.99
    Qty in Cart: 0
    Price:
    $75.99
    Subtotal:
  • BESTfit Diesel Particulate Filter For Caterpillar Engine Replaces 20R0697, 20R5621, 20R8028

    BESTfit Diesel Particulate Filter For Caterpillar Engine Replaces 20R0697, 20R5621, 20R8028

    BESTFIT TRUCK PARTS

    $4,831.99
    Diesel Particulate Filter By BESTfit Replaces 20R0697, 20R5621, 20R8028 Fits Caterpillar EngineUpgrade your Caterpillar engine's emissions system with the BESTfit CAT DPF, a premium replacement for...
    29-08090059
    SKU:
    29-08090059
    Product Type:
    Exhaust
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $4,831.99
    Qty in Cart: 0
    Price:
    $4,831.99
    Subtotal:
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