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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

    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

    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

    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

    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

    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

    7 Best Exterior Chrome Upgrades for the Kenworth W900A(Post)

    Outfit your Kenworth W900A model with stunning exterior chrome accessories and stainless-steel upgrades that seamlessly tie together the entire truck’s theme. Classic big rig owners take a lot of prid

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  • 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:
  • Knuckle Spacer Replaces 005208, R-005208

    Knuckle Spacer Replaces 005208, R-005208

    AFTERMARKET

    $104.99
    2.937 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleReduce alignment issues and extend component life with a knuckle spacer built for accuracy. This high-quality replacement spacer is...
    29-05200030
    SKU:
    29-05200030
    Product Type:
    Trailer
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • FASS Fuel Filter Delete Kit For Ford F250, F350, F450 W/ Powerstroke 6.7L Engine

    FASS Fuel Filter Delete Kit For Ford F250, F350, F450 W/ Powerstroke 6.7L Engine

    FASS

    $101.99
    Fuel Filter Delete Kit For Powerstroke 6.7L Engine 2011-2023Improve your fuel system setup with the FASS Fuel Filter Delete Kit for Ford F250, F350, and F450 trucks equipped with the 6.7L Powerstroke...
    05-07030052
    SKU:
    05-07030052
    Style Options:
    Powerstroke
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Ford
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • Rear Driveshaft Assembly Replaces 52105278AB For Dodge Ram 2500, 3500 1998-2002

    Rear Driveshaft Assembly Replaces 52105278AB For Dodge Ram 2500, 3500 1998-2002

    DAYTON / DORMAN

    $980.99
    Rear Driveshaft Assembly Fits Dodge Ram 2500 & 3500Searching for a cost effective and easy to install driveshaft for your Dodge Ram? 4 State Trucks has what you need with this complete direct...
    17-05210039
    SKU:
    17-05210039
    Truck Class:
    Light Duty
    Make:
    Dodge
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    $980.99
    Qty in Cart: 0
    Price:
    $980.99
    Subtotal:
  • TPHD Auto-Trans Shaft Control Cable Replace 8971486051, 8971486052

    TPHD Auto-Trans Shaft Control Cable Replace 8971486051, 8971486052

    TURNPIKE TRUCK TRIM

    $103.99
    Auto-Trans Shaft Control Cable* High Quality Shaft Control Cable* 128 Inch Length* Sold Individually* Warranty On Shaft Control Cables Against Defects In Workmanship & Material From Date Of...
    29-05210016
    SKU:
    29-05210016
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Length Options:
    128 Inches
    Make:
    Isuzu
    Make:
    GMC
    $103.99
    Qty in Cart: 0
    Price:
    $103.99
    Subtotal:
  • 11 Inch Hex Bolt 7/8in-14 Thread Grade 8

    11 Inch Hex Bolt 7/8in-14 Thread Grade 8

    AUTOMANN USA

    $16.18
    Grade 8 - 11 Inch Hex Bolt Replaces OE 1140023* High Quality Bolt* Dimensions: - 7/8 Inch Bolt Diameter - 11 Inch Bolt Length * 14 Threads* Pitch- Fine* Grade- 8* Sold Individually* Warranty On Bolts...
    09-05200015
    SKU:
    09-05200015
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $16.18
    Qty in Cart: 0
    Price:
    $16.18
    Subtotal:
  • Flanged Lock Nut 5/8 Inch-11 TPI

    Flanged Lock Nut 5/8 Inch-11 TPI

    AUTOMANN USA

    $1.15
    Flanged Lock Nut Replaces D85020649, W300306, 14003012, 95112H, 8397202, And A344X6200* High Quality Flanged Lock Nut* Dimensions: - A/F- 0.91 Inch - Height- 0.56 Inch* Threads- 5/8 Inch-11* Sold...
    29-05250004
    SKU:
    29-05250004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $1.15
    Qty in Cart: 0
    Price:
    $1.15
    Subtotal:
  • Cap Screw Bolt 7/8-9 Thread X 11 Inch - Grade 8 - S21488M2

    Cap Screw Bolt 7/8-9 Thread X 11 Inch - Grade 8 - S21488M2

    AUTOMANN USA

    $28.15
    Grade 8 - 11 Inch Cap screw Bolt With 7/8 Inch -9 Thread* High Quality Cap Screw* Dimensions: - 7/8 Inch Bolt Diameter - 11 Inch Bolt Length* Bolt Type- Hex Bolts* Thread- 9* Sold Individually*...
    19-05250007
    SKU:
    19-05250007
    Material Options:
    Steel
    Length Options:
    11 Inch
    Truck Class:
    Heavy Duty
    Make:
    Trailer
    Product Type:
    Trailer
    $28.15
    Qty in Cart: 0
    Price:
    $28.15
    Subtotal:
  • Hex Head Flange Bolt 5/8-11 X 1-1/2 Inch Grade 8

    Hex Head Flange Bolt 5/8-11 X 1-1/2 Inch Grade 8

    AUTOMANN USA

    $2.31
    Grade 8 Hex Head Flange Bolt W/ Coarse Pitch Replaces D8502-0402, And 8397076* High Quality Flange Bolt* Dimensions: - 5/8 Inch Bolt Diameter - 1-1/2 Inch Bolt Length* Threads- 11* Sold Individually...
    29-05250008
    SKU:
    29-05250008
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    5/8 Inch
    Product Type:
    Frame & Chassis
    $2.31
    Qty in Cart: 0
    Price:
    $2.31
    Subtotal:
  • Hex Head Flange Bolt 5/8-11 X 2-1/2 Inch Grade 8

    Hex Head Flange Bolt 5/8-11 X 2-1/2 Inch Grade 8

    AUTOMANN USA

    $2.30
    Grade 8 Flanged Bolt* High Quality Flange Bolt* 5/8 Inch Bolt Diameter* 2-1/2 Inch Bolt Length* Bolt Type- Flanged Bolts* Thread- 11* Pitch- Coarse* Grade- 8* Sold Individually* Warranty On Flange...
    29-05250047
    SKU:
    29-05250047
    Length Options:
    2 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $2.30
    Qty in Cart: 0
    Price:
    $2.30
    Subtotal:
  • On Sale
    Limited Quantity Available
    Hex Head Flange Bolt 5/8-11 X 1-3/4 Inch Grade 8

    Hex Head Flange Bolt 5/8-11 X 1-3/4 Inch Grade 8

    AUTOMANN USA

    Now: $0.96
    Was: $2.14
    Grade 8 Hex Head Flange Bolt W/ Coarse Pitch Replaces D85020415* High Quality Flange Bolt* Dimensions: - 5/8 Inch Bolt Diameter - 1-3/4 Inch Bolt Length* Bolt Type- Flanged Bolt* Thread- 11* Coarse...
    02-05250000
    SKU:
    02-05250000
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Diameter Options:
    5/8 Inch
    Now: $0.96
    Was: $2.14
    Qty in Cart: 0
    Price:
    Now: $0.96
    Was: $2.14
    Subtotal:
  • Thrust Washer, 3.98 OD For Freightliner Motor Mount

    Thrust Washer, 3.98 OD For Freightliner Motor Mount

    AUTOMANN USA

    $18.50
    Washer Replaces 680-242-00-52, 6802420052, A-680-242-00-52* High Quality Suspension Washer* Dimensions:  - 3.9 Inch OD  - 0.787 Inch ID   - 0.250 Inch Thickness * Sold Individually* Warranty On...
    03-05250003
    SKU:
    03-05250003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Freightliner
    Product Type:
    Frame & Chassis
    $18.50
    Qty in Cart: 0
    Price:
    $18.50
    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:
  • 22 Inch Stainless Steel Boxed End Bumper W/ Center Tow Hole For Peterbilt 362 1981-2002

    22 Inch Stainless Steel Boxed End Bumper W/ Center Tow Hole For Peterbilt 362 1981-2002

    VALLEY CHROME PLATING

    $1,425.99
    Valley Chrome Stainless Steel Boxed End Bumper W/ Center Tow Hole Fits Peterbilt 362* High Quality Bumper* Made Of Stainless Steel * 22 Inch Boxed End* Has Cutouts For:  - Center Tow Hole  - Hitch...
    HK001052S
    SKU:
    HK001052S
    Height Options:
    22 Inch
    Light Options:
    Without Lights
    Make:
    Peterbilt
    Truck Class:
    Heavy Duty
    Style Options:
    Texas Boxed End
    Material Options:
    Stainless Steel
    Type Options:
    Standard Mount
    Product Type:
    Bumpers
    $1,425.99
    Qty in Cart: 0
    Price:
    $1,425.99
    Subtotal:
  • Valley Chrome Boxed End Bumper, 22 Inch W/ Mounting & Tow/Hitch Holes For International

    Valley Chrome Boxed End Bumper, 22 Inch W/ Mounting & Tow/Hitch Holes For International

    VALLEY CHROME PLATING

    $891.99
    22 Inch Boxed End Bumper With Mounting & Tow/Hitch Holes* High Quality Replacement Bumper* Made Of Chrome Plated Steel* Boxed End* 22 Inch* Has Cutouts For: - Mounting Holes - Tow/Hitch Holes* Does...
    EN001052
    SKU:
    EN001052
    Truck Class:
    Heavy Duty
    Height Options:
    22 Inch
    Make:
    International
    Light Options:
    Without Lights
    Style Options:
    Texas Boxed End
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Type Options:
    Standard Mount
    Product Type:
    Bumpers
    $891.99
    Qty in Cart: 0
    Price:
    $891.99
    Subtotal:
  • 22 Inch Chrome Steel Boxed End Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel For Peterbilt 378/ 379 Conventional 1987-2007

    22 Inch Chrome Steel Boxed End Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel For Peterbilt 378/ 379 Conventional 1987-2007

    VALLEY CHROME PLATING

    $1,425.99
    Valley Chrome 22 Inch Chrome Steel Boxed End Bumper W/ Mounting & Tow/Hitch Holes Stainless Steel* High Quality Bumper* Made Of Stainless Steel* Has Cutouts For: - Mounting Holes - Tow/Hitch Holes*...
    HC001052S
    SKU:
    HC001052S
    Truck Class:
    Heavy Duty
    Height Options:
    22 Inch
    Make:
    Peterbilt
    Material Options:
    Stainless Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Bumpers
    $1,425.99
    Qty in Cart: 0
    Price:
    $1,425.99
    Subtotal:
  • Torque Arm Bolt Kit E-5277, 49176001 For Hendrickson Rear E4 Series

    Torque Arm Bolt Kit E-5277, 49176001 For Hendrickson Rear E4 Series

    AUTOMANN USA

    $5.44
    Torque Arm Bolt Kit With Cap Screw, Lock Nut, U-Bolt Washer* High Quality Bolt Kit* Includes - Cap Screw  - Lock Nut  - U Bolt Washer* For Torque Arm* Sold Individually * Warranty On Bolt Kits...
    09-05250074
    SKU:
    09-05250074
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $5.44
    Qty in Cart: 0
    Price:
    $5.44
    Subtotal:
  • Stainless Steel Steerable Lift Axle APSCO Control Panel

    Stainless Steel Steerable Lift Axle APSCO Control Panel

    AUTOMANN USA

    $899.99
    7 X 3 X 5 14 Gauge Stainless Steel APSCO Steer Axle Control Panel* High Quality Control Panel* Silver Finish* 14 Gauge Stainless Steel* Dimensions  - 7 Inch Length  - 3 Inch Width  - 5 Inch Diameter*...
    09-052000002
    SKU:
    09-052000002
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Width Options:
    3 Inch
    Length Options:
    7 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $899.99
    Qty in Cart: 0
    Price:
    $899.99
    Subtotal:
  • Stainless Steel Lift Axle APSCO Control Panel

    Stainless Steel Lift Axle APSCO Control Panel

    AUTOMANN USA

    $662.99
    7 X 3 X 5 14 Gauge Stainless Steel APSCO Lift Axle Control Panel* High Quality Control Panel* Silver Finish* 14 Gauge Stainless Steel* Dimensions  - 7 Inch Length  - 3 Inch Width  - 5 Inch Diameter*...
    09-052000001
    SKU:
    09-052000001
    Diameter Options:
    5 Inch
    Width Options:
    3 Inch
    Length Options:
    7 Inch
    Truck Class:
    Universal
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $662.99
    Qty in Cart: 0
    Price:
    $662.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 5 Inch OD 90 Degree Exhaust Elbow For Kenworth T600, T800, W900 AeroCab W/ 45 Inch Boxes

    BESTfit 5 Inch OD 90 Degree Exhaust Elbow For Kenworth T600, T800, W900 AeroCab W/ 45 Inch Boxes

    BESTFIT TRUCK PARTS

    $97.99
    BESTfit Kenworth Steel 90 Degree Exhaust Pipe ElbowThis exhaust elbow is designed to be installed above the muffler inlet elbow for Kenworth trucks. It replaces the original equipment part number...
    02-08105250
    SKU:
    02-08105250
    Diameter Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Style Options:
    Elbow
    Material Options:
    Steel
    Degree Options:
    90
    Make:
    Kenworth
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
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