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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

    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

    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

    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

    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

    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

    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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  • 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:
  • 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:
  • 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:
  • Turnpike Truck Trim Custom Punched Grille Insert With Horizontal Ovals For Peterbilt 357, 377, 378, 379 & 385

    Turnpike Truck Trim Custom Punched Grille Insert With Horizontal Ovals For Peterbilt 357, 377, 378, 379 & 385

    TURNPIKE TRUCK TRIM

    $469.99
    42.25 X 33.75 Inch Punched Grille InsertThis high quality 42.25 X 33.75 inch stainless steel grille insert with horizontal oval cutouts is for the Peterbilt 357, 377, 378, 385, and 379 119 BBC. The...
    01-1210008
    SKU:
    01-1210008
    Truck Class:
    Heavy Duty
    Product Type:
    Hood Parts & Acc.
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $469.99
    Qty in Cart: 0
    Price:
    $469.99
    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:
  • 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:
  • Shackle Hanger Rear Of Rear - B7Q5335A For Ford F & C Series

    Shackle Hanger Rear Of Rear - B7Q5335A For Ford F & C Series

    AFTERMARKET

    $67.99
    Ford Steer Axle Rear Hanger Replaces B7Q5335A* High Quality Hanger* Rear Of Rear* With 2-1/2 Inch And 3 Inch Spring* Made In USA* Sold Individually* Warranty On Hangers Against Defects In Workmanship...
    05-05090008
    SKU:
    05-05090008
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Ford
    Product Type:
    Frame & Chassis
    $67.99
    Qty in Cart: 0
    Price:
    $67.99
    Subtotal:
  • Smooth Aluminum Underbody Tool Box W/ Dual Barn Doors- 72 X 36 X 36 Inch

    Smooth Aluminum Underbody Tool Box W/ Dual Barn Doors- 72 X 36 X 36 Inch

    ICONIC

    $2,014.99
    72 X 36 X 36 Inch Smooth Aluminum Underbody Tool Box W/ Dual Barn DoorsTake your truck organization to the next level with this oversized 72-inch underbody tool box crafted from smooth marine-grade...
    09-020100850
    SKU:
    09-020100850
    Finish Options:
    Smooth
    Height Options:
    36 Inch
    Product Type:
    Toolboxes
    Width Options:
    36 Inch
    Length Options:
    72 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    $2,014.99
    Qty in Cart: 0
    Price:
    $2,014.99
    Subtotal:
  • BESTfit 1/16 Inch Thick X 5.688 Inch C To C Torque Rod Shim Replaces 488916C1 For International Rear New Corporate Air & IROS Air Spring

    BESTfit 1/16 Inch Thick X 5.688 Inch C To C Torque Rod Shim Replaces 488916C1 For International Rear New Corporate Air & IROS Air Spring

    BESTFIT TRUCK PARTS

    $6.23
    BESTfit 1/16 Inch Thick Torque Rod Shim Fits International Air SpringsSecure the alignment of your International truck's rear suspension with the BESTfit 1/16 Inch Thick X 5.688 Inch C To C Torque...
    07-051008
    SKU:
    07-051008
    Truck Class:
    Heavy Duty
    Width Options:
    3 Inch
    Make:
    International
    Product Type:
    Frame & Chassis
    $6.23
    Qty in Cart: 0
    Price:
    $6.23
    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:
  • 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:
  • 3.5 Inch C to C Hood Locating Receptacle Replaces L67-1014 For Kenworth

    3.5 Inch C to C Hood Locating Receptacle Replaces L67-1014 For Kenworth

    AFTERMARKET

    $130.99
    Hood Locating Receptacle Fits KenworthAchieve accurate hood positioning with the 3.5 Inch C to C Hood Locating Receptacle, designed to replace L67-1014 for Kenworth trucks. This high-quality...
    02-12400008
    SKU:
    02-12400008
    Truck Class:
    Heavy Duty
    Length Options:
    5 Inch
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Hood Parts & Acc.
    $130.99
    Qty in Cart: 0
    Price:
    $130.99
    Subtotal:
  • 24 X 36 Inch Heavy Duty Black Rubber Mud Flaps

    24 X 36 Inch Heavy Duty Black Rubber Mud Flaps

    BUYERS PRODUCTS

    $46.11
    1/4 Inch Thick Heavy Duty Black Rubber 24 X 36 Inch Mud FlapsStart getting your truck ready for harsh weather conditions with durable mud flaps. Sold as a pair, these heavy duty black rubber mud...
    09-050700008
    SKU:
    09-050700008
    Truck Class:
    Universal
    Height Options:
    36 Inch
    Color:
    Black
    Width Options:
    24 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Mud Flaps
    Ready To Ship:
    Yes
    $46.11
    Qty in Cart: 0
    Price:
    $46.11
    Subtotal:
  • Radiator Gasket 3.55 Inch C To C For Kenworth

    Radiator Gasket 3.55 Inch C To C For Kenworth

    AUTOMANN USA

    $17.97
    Kenworth Radiator Gasket W/ 2.95 Inch ID Replaces D29653713, K134356* High Quality Radiator Gasket* Dimensions: - 0.375 Inch Bolt Holes - 2.95 Inch I.D. - 3.00 Inch And 3.55 Inch C To C* Sold...
    02-07020008
    SKU:
    02-07020008
    Diameter Options:
    3/8 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Engine Parts
    $17.97
    Qty in Cart: 0
    Price:
    $17.97
    Subtotal:
  • Drag Link 27.875 Inch C To C - L24VU8338A11 For Peterbilt

    Drag Link 27.875 Inch C To C - L24VU8338A11 For Peterbilt

    AFTERMARKET

    $295.99
    27.875 Inch C To C Drag Link Replaces L24VU8338A11Restore your truck's steering integrity with this high-quality Drag Link, measuring 27.875 inches center to center, a direct replacement for...
    01-05090008
    SKU:
    01-05090008
    Length Options:
    28 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $295.99
    Qty in Cart: 0
    Price:
    $295.99
    Subtotal:
  • Drag Link 28.578 Inch C To C - Replaces 4C403304AA For International, Ford

    Drag Link 28.578 Inch C To C - Replaces 4C403304AA For International, Ford

    AFTERMARKET

    $143.99
    28.578 Inch C To C Drag Link Replaces 4C403304AA, 4C4O3304AA, 4C4Z3304AA, 3533795C91, L20VU8118A11Maintain optimal handling with this robust 28.578 Inch C to C Drag Link for International and Ford...
    29-05090087
    SKU:
    29-05090087
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Length Options:
    29 Inch
    Product Type:
    Frame & Chassis
    $143.99
    Qty in Cart: 0
    Price:
    $143.99
    Subtotal:
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