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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

    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

    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

    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

    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

    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

    CB Radios Ultimate Guide(Post)

    “10-4 Roger.” Despite the rise of messaging apps, GPS devices with voice-activated messaging, and push-to-talk (PTT) apps, the classic CB radio remains among the most trusted and well-used accessorie

    What Should Be in a Semi Truck Emergency Kit? (Free PDF Checklist for Drivers)(Post)

    Semi-truck breakdowns cost money and time; but they aren't inevitable. With the right emergency accessories, truck drivers can minimize costly delays, tackle minor repairs on the fly, and safely power

    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

    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

    Top 10 Semi Truck Winter Accessories for Heavy-Duty Drivers(Post)

    Winter truck driving can be downright trecherous to haul payloads in, especially when you don't have the right winter-ready trucker gear to get you through difficult drives in below-freezing temperatu

    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

    Haul of Fame: The Murder Pete Truck(Post)

    They call it the Murder Pete. Blacked-out, rugged, and raw, it’s a notorious big rig known for its “murdered out” style. Supported by the custom fab shop work of Chrome Shop Mafia (CMS) and supplied w

    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:
  • 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:
  • FREE SHIPPING OVER $249
    TPHD 12 Volt Cigarette Lighter Socket Extension Cord - 12 Ft Long

    TPHD 12 Volt Cigarette Lighter Socket Extension Cord - 12 Ft Long

    TPHD

    $18.72
    TPHD 12 Foot 12V Extension Cord - Plugs Into Cigarette Lighter SocketAre you looking for a very simple way to power your favorite small appliances and gadgets when traveling? 4 State Trucks offers...
    09-140000008
    SKU:
    09-140000008
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Electronics
    $18.72
    Qty in Cart: 0
    Price:
    $18.72
    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:
  • 1 X 4 X 12 Inch Semi Round U-Bolt Kit For International

    1 X 4 X 12 Inch Semi Round U-Bolt Kit For International

    AFTERMARKET

    $92.99
    Semi Round U-Bolt Kit Replaces 531724C1Secure your suspension components with this high-quality 1 X 4 X 12 Inch Semi Round U-Bolt Kit, designed for International trucks. This durable kit includes two...
    07-05090086
    SKU:
    07-05090086
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    International
    Product Type:
    Frame & Chassis
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    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:
  • 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:
  • 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:
  • FREE SHIPPING OVER $249
    12 Inch Stainless Under Body Glow Light Bracket W/ 6 Round 3/4 Inch Light Holes

    12 Inch Stainless Under Body Glow Light Bracket W/ 6 Round 3/4 Inch Light Holes

    IOWA CUSTOMS

    $50.99
    12 Inch Underglow Light Bracket SectionCreate a smooth, custom underglow look with this 12 inch polished stainless steel under body light bracket designed for mini button style LED lighting. Built...
    09-1610085
    SKU:
    09-1610085
    Truck Class:
    Universal
    Make:
    Universal Items
    Length Options:
    12 Inch
    Material Options:
    Steel
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    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:
  • 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:
  • BESTfit Shackle Side Bar W/O Ears Type 12, 3.313 Inch - 4006001, 13130 For Advance Mixer Front 20K Axle

    BESTfit Shackle Side Bar W/O Ears Type 12, 3.313 Inch - 4006001, 13130 For Advance Mixer Front 20K Axle

    BESTFIT TRUCK PARTS

    $24.28
    BESTfit Type 12 C To C Shackle Side Bar Without Ears, With 1-1/4In Holes Replaces 4006001, 13130* High Quality Side Bar* Dimensions: - 5.344 Inch Length - 2.00 Inch Width - 3.313 Inch C To C - 1.00...
    80-05090008
    SKU:
    80-05090008
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Width Options:
    2 Inch
    Height Options:
    1 Inch
    $24.28
    Qty in Cart: 0
    Price:
    $24.28
    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 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:
  • FREE SHIPPING OVER $249
    SC3 Single Check Valve - Replaces 800839

    SC3 Single Check Valve - Replaces 800839

    OPP - ORIGINAL PARTS PROGRAM

    $33.28
    Single Check Valve* High Quality SC3 Check Valve * Sold Individually * Warranty On SC3 Check Valve Against Defects In Workmanship & Material From Date Of Purchase*** This Is An OEM Replacement Part/...
    800839
    SKU:
    800839
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $33.28
    Qty in Cart: 0
    Price:
    $33.28
    Subtotal:
  • Drag Link 18.68 Inch C To C - W0008096 For International

    Drag Link 18.68 Inch C To C - W0008096 For International

    AFTERMARKET

    $183.99
    18.68 Inch C To C Drag Link Replaces W0008096* High Quality Drag Link* C To C- 18.68 Inch* C To E- 13.50 Inch* Type- 2-D. E Toe- 14.50 Inch* Shaft Diameter- 1.66 Inch* Taper Pin Length 1- 1.08 Inch*...
    07-05090084
    SKU:
    07-05090084
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    International
    Product Type:
    Frame & Chassis
    $183.99
    Qty in Cart: 0
    Price:
    $183.99
    Subtotal:
  • Wiper Motor Replaces 21000862, 85122759, 85150366 For Volvo VHD, VNL Gen I, Gen II

    Wiper Motor Replaces 21000862, 85122759, 85150366 For Volvo VHD, VNL Gen I, Gen II

    AFTERMARKET

    $160.99
    Volvo Wiper MotorAvoid poor visibility on the road with this premium Wiper Motor, designed for Volvo VHD and VNL Gen I & II and replacing OE numbers 21000862, 85122759, and 85150366. Built for...
    13-0911008
    SKU:
    13-0911008
    Truck Class:
    Heavy Duty
    Make:
    Volvo
    Product Type:
    Exterior
    $160.99
    Qty in Cart: 0
    Price:
    $160.99
    Subtotal:
  • Air Brake Spider Flange Replaces 6261, B13231, R00864, M16TF101, 102102002

    Air Brake Spider Flange Replaces 6261, B13231, R00864, M16TF101, 102102002

    AFTERMARKET

    $97.99
    Air Brake Spider Backing Plate - Flange* High Quality Brake Spider Flange* Dimensions:  - 7-5/8 Inch Outer Diameter   - 5-1/8 Inch Inner Diameter  - 1/2 Inch Thickness* Made In USA* Sold...
    09-05170081
    SKU:
    09-05170081
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Cabin Air Spring Replaces T811001, 7092, W023587092, W026007109, 1B15377, 1B15-377, 1B15378, 1B15-378, 578913375, 578-91-3-375, 11020083, 1102K083 For Kenworth T600, T800 AeroCabs

    Cabin Air Spring Replaces T811001, 7092, W023587092, W026007109, 1B15377, 1B15-377, 1B15378, 1B15-378, 578913375, 578-91-3-375, 11020083, 1102K083 For Kenworth T600, T800 AeroCabs

    AUTOMANN USA

    $48.29
    Sleeve Type Cabin Air Spring For 86 Inch Kenworth AeroCabRestore ride comfort and cab stability with this Cabin Air Spring for Kenworth T600 and T800 AeroCabs. Built as a high-quality sleeve-type air...
    02-09500008
    SKU:
    02-09500008
    Product Type:
    Exterior
    Length Options:
    86 Inch
    Cab Style:
    Curved Windshield
    Make:
    Peterbilt
    Make:
    Kenworth
    $48.29
    Qty in Cart: 0
    Price:
    $48.29
    Subtotal:
  • On Sale
    Limited Quantity Available
    FREE SHIPPING OVER $249
    12-10 AWG Yellow Vinyl Ring Terminal For 5/16 Inch Stud - 12 Pack

    12-10 AWG Yellow Vinyl Ring Terminal For 5/16 Inch Stud - 12 Pack

    AFTERMARKET

    Now: $0.89
    Was: $3.70
    Insulated Ring Terminal For 5/16 Inch Stud And 12-10 AWG Wires* High Quality Vinyl Insulated Ring Terminal* Yellow* 12-10 AWG * 5/16 Inch* 12 Piece Set* PVC Injection Molded With Funnel Entry For...
    09-16030084
    SKU:
    09-16030084
    Color:
    Yellow
    Truck Class:
    Universal
    Material Options:
    Vinyl
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    Now: $0.89
    Was: $3.70
    Qty in Cart: 0
    Price:
    Now: $0.89
    Was: $3.70
    Subtotal:
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