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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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  • BESTfit Oil Pan Isolator Seal Gasket For Caterpillar C15 & Late 3406E Engines

    BESTfit Oil Pan Isolator Seal Gasket For Caterpillar C15 & Late 3406E Engines

    BESTFIT TRUCK PARTS

    $119.99
    BESTfit Diesel CAT C15 & Late 3406E Oil Pan GasketMade of HNBR rubber, this oil pan gasket seal has a one piece design and can withstand service temperatures of -40 to 115C. It is resistant to fuel,...
    09-071685248
    SKU:
    09-071685248
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $119.99
    Qty in Cart: 0
    Price:
    $119.99
    Subtotal:
  • 7 LED 194/168 Dome Type Bulb

    7 LED 194/168 Dome Type Bulb

    GRAND GENERAL

    $14.46
    Revamp your truck lighting with the 7 LED 194/168 Dome Type Bulb. This LED replacement bulb uses the 194/168 bulb number and a dome-style design, making it a direct replacement for compatible...
    PPR_205754
    SKU:
    PPR_205754
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $14.46
    Qty in Cart: 0
    Price:
    $14.46
    Subtotal:
  • 10 LED 194/168 Tower Style Bulb

    10 LED 194/168 Tower Style Bulb

    GRAND GENERAL

    $15.19
    The 10 LED 194/168 Tower Style Bulb is an LED replacement for select truck lighting applications. Designed for 12-volt systems, this tower-style bulb uses 5630 SMD LEDs, with the white version...
    PPR_205757
    SKU:
    PPR_205757
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $15.19
    Qty in Cart: 0
    Price:
    $15.19
    Subtotal:
  • 194/168 Tower Style 6 LED Light Bulb

    194/168 Tower Style 6 LED Light Bulb

    GRAND GENERAL

    $14.25 - $14.72
    Refresh truck lighting with the 194/168 Tower Style 6 LED Light Bulb. Made as an aftermarket replacement for 194/168 bulbs, this 12-volt tower-style bulb uses six 5630 SMD LEDs, with two positioned...
    PPR_205747
    SKU:
    PPR_205747
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $14.25 - $14.72
    Qty in Cart: 0
    Price:
    $14.25 - $14.72
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Bezel For 168 Series Lights

    Chrome Bezel For 168 Series Lights

    PETERSON MFG

    $2.74
    168 Series Bezel* High Quality Bezel* Chrome Plated* Fits M168 Series Lights* Bezel Only* Sold Individually* Made In USA* Warranty On Bezel Against Defects In Workmanship & Material From Date Of...
    09-1605073
    SKU:
    09-1605073
    Location:
    Made In USA
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Lighting
    $2.74
    Qty in Cart: 0
    Price:
    $2.74
    Subtotal:
  • Oil Plug Replaces 168-2288, 1682288 For Caterpillar C7 Engines

    Oil Plug Replaces 168-2288, 1682288 For Caterpillar C7 Engines

    AUTOMANN USA

    $15.24
    0.953 Inch Oil Plug W/ 1.122 Inch A/F & M18 x 1.5 ThreadReplace worn or damaged plugs with this premium Oil Plug for Caterpillar C7 engines. With a 1.122-inch A/F, 0.953-inch length, and M18 x 1.5...
    29-07200009
    SKU:
    29-07200009
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $15.24
    Qty in Cart: 0
    Price:
    $15.24
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch 2 Diode Red LED 168 Marker Light

    2 Inch 2 Diode Red LED 168 Marker Light

    PETERSON MFG

    $14.02
    Clearance/Marker Light* High Quality Light* LED 168* LED 2 Diodes* Red Light* Sold Individually* Made in the USA* Warranty on lights against defects in workmanship & material from date of purchase...
    09-160106081
    SKU:
    09-160106081
    Truck Class:
    Universal
    Make:
    Universal Items
    Location:
    Made In USA
    Color:
    Red
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $14.02
    Qty in Cart: 0
    Price:
    $14.02
    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:
  • 3 Inch Sleeper Panels W/ 4 P1 Amber/Clear LED Lights, 12 In Spacing For Peterbilt W/ 36/44 Inch Unibilt Sleepers No Extenders

    3 Inch Sleeper Panels W/ 4 P1 Amber/Clear LED Lights, 12 In Spacing For Peterbilt W/ 36/44 Inch Unibilt Sleepers No Extenders

    PHOENIX DESIGN

    $266.99
    Sleeper Panels W/ 4 P1 Amber LED Clear Lens LED Lights Fit Peterbilt W/ 36/44 Inch Unibilt Sleepers* High Quality Sleeper Panels * Made Of 304 Stainless Steel * 3 Inch* With 2 P1 Amber/Clear LED...
    01-10123168
    SKU:
    01-10123168
    Light Options:
    With Lights
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Make:
    Peterbilt
    Length Options:
    44 Inch
    Product Type:
    Exterior
    $266.99
    Qty in Cart: 0
    Price:
    $266.99
    Subtotal:
  • 4 Inch SS Sleeper Panels W/ 18 Amber/Amber P3 LEDs For Peterbilt W/ 63/72 Inch Unibilt Sleeper

    4 Inch SS Sleeper Panels W/ 18 Amber/Amber P3 LEDs For Peterbilt W/ 63/72 Inch Unibilt Sleeper

    PHOENIX DESIGN

    $589.99
    4 Inch Stainless Steel Sleeper Panels Fits Peterbilt W/ 63/72 Inch Unibilt Sleeper - No Extenders* High Quality Sleeper Panels* Made of high quality 304 Stainless Steel* 1 (Pair) Stainless Sleeper...
    01-101200168
    SKU:
    01-101200168
    Light Options:
    With Lights
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Length Options:
    72 Inch
    Make:
    Peterbilt
    Finish Options:
    Polished
    Product Type:
    Exterior
    $589.99
    Qty in Cart: 0
    Price:
    $589.99
    Subtotal:
  • Isspro 3 Inch Type J Pyrometer 0-1000F W/ Black Bezel, Black Face, Red Pointer

    Isspro 3 Inch Type J Pyrometer 0-1000F W/ Black Bezel, Black Face, Red Pointer

    ISSPRO

    $221.99
    3 Inch Type J Pyrometer 0-1000F W/ Black Bezel, Black Face & Red Pointer* High Quality Pyrometer* Type J* 3 Inch* 0-1000F* With Black Bezel, Black Face, Red Pointer* Sold Individually* Made In USA*...
    09-150100168
    SKU:
    09-150100168
    Color:
    Red
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Analog
    Shape Options:
    Round
    Make:
    Universal Items
    Product Type:
    Interior
    $221.99
    Qty in Cart: 0
    Price:
    $221.99
    Subtotal:
  • AirDog Low Pressure Indicator Light Kit W/ 5 PSI Pressure Switch & 45 Degree Elbow Adapter

    AirDog Low Pressure Indicator Light Kit W/ 5 PSI Pressure Switch & 45 Degree Elbow Adapter

    AIRDOG HD

    $134.00
    Low Pressure Indicator Light Kit W/ 5 PSI Pressure Switch & 45 Degree Elbow Adapter By AirDog* High Quality Low Pressure Indicator Light Kit* Warning Light Illuminates If Fuel Pressure Drops Below 5...
    09-07030168
    SKU:
    09-07030168
    Product Type:
    Engine Parts
    $134.00
    Qty in Cart: 0
    Price:
    $134.00
    Subtotal:
  • FREE SHIPPING OVER $249
    1 Diode Bulkhead Light - Amber LED/ Clear Lens

    1 Diode Bulkhead Light - Amber LED/ Clear Lens

    AFTERMARKET

    $16.92
    Amber LED Clear Lens Bulkhead Light Threaded W/ Backing NutLooking for a simple light that can withstand heavy use and exposure to extreme conditions? 4 State Trucks offers this high quality single...
    09-160101168
    SKU:
    09-160101168
    Truck Class:
    Universal
    Color:
    Amber
    Make:
    Universal Items
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $16.92
    Qty in Cart: 0
    Price:
    $16.92
    Subtotal:
  • Rear AC Light Panels W/ P3 Red LEDs/ Clear Lens For Peterbilt 378, 379, 388, 389 - Pair

    Rear AC Light Panels W/ P3 Red LEDs/ Clear Lens For Peterbilt 378, 379, 388, 389 - Pair

    PHOENIX DESIGN

    $257.99
    Rear Air Cleaner Panels W/ 6 P3 Red LEDs On Each PanelGive your Peterbilt 378, 379, 388, or 389 a durable lighting upgrade with these Rear AC Light Panels featuring twelve P3 red LED lights housed...
    01-0905168
    SKU:
    01-0905168
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Peterbilt
    Material Options:
    Stainless Steel
    Product Type:
    Exterior
    $257.99
    Qty in Cart: 0
    Price:
    $257.99
    Subtotal:
  • Bostrom Isolator Assembly W/ Driver Side Seat Swivel

    Bostrom Isolator Assembly W/ Driver Side Seat Swivel

    BOSTROM TRUCK SEATS

    $531.99
    Bostrom Seat Swivel - Base Not IncludedExperience superior cab ergonomics with the Bostrom Isolator Assembly with Driver Side Swivel. Designed exclusively for Bostrom T Series seats, this assembly...
    6222168003
    SKU:
    6222168003
    Truck Class:
    Heavy Duty
    Style Options:
    Swivel
    Make:
    Universal Items
    Product Type:
    Seats
    $531.99
    Qty in Cart: 0
    Price:
    $531.99
    Subtotal:
  • Stainless Steel Wide / Standard Cowl Panels W/ 8 - 3/4 Inch Round Amber/Clear LEDs For Peterbilt 389 131BBC 2018 - Current

    Stainless Steel Wide / Standard Cowl Panels W/ 8 - 3/4 Inch Round Amber/Clear LEDs For Peterbilt 389 131BBC 2018 - Current

    PHOENIX DESIGN

    $313.99
    Stainless Steel Standard/Wide Cowl Panels W/ 8 - 3/4 Inch Round Amber LED Clear Lens Lights Fit Peterbilt 389 131BBC* High Quality Cowl Panel* Made Of 304 Stainless Steel* 4 - 3/4 Inch Lights Per...
    01-091201168
    SKU:
    01-091201168
    Light Options:
    With Lights
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Finish Options:
    Paintable
    Length Options:
    27 Inch
    Product Type:
    Exterior
    $313.99
    Qty in Cart: 0
    Price:
    $313.99
    Subtotal:
  • Stainless Steel Cab Panels W/ 8 P1 Light Holes, Block Heater Plug, Step Light Hole For Kenworth T800, W900

    Stainless Steel Cab Panels W/ 8 P1 Light Holes, Block Heater Plug, Step Light Hole For Kenworth T800, W900

    PHOENIX DESIGN

    $205.99
    Cab Panels W/ 8 P1 Light Holes, Block Heater Plug, Step Light Hole Fits Kenworth T800 & W900* High Quality Cab Panel* Made Of 304 Stainless Steel* 4 P1 Light Holes Per Side* Lights Not Included * 8...
    02-091200168
    SKU:
    02-091200168
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Finish Options:
    Paintable
    Length Options:
    40 Inch
    Light Options:
    Without Lights
    Product Type:
    Exterior
    $205.99
    Qty in Cart: 0
    Price:
    $205.99
    Subtotal:
  • Go Rhino Black Steel Side Bar & Brackets - Complete Kit W/ 5 In. Step Pads For Jeep Gladiator JT W/ 4 Doors & Crew Cab

    Go Rhino Black Steel Side Bar & Brackets - Complete Kit W/ 5 In. Step Pads For Jeep Gladiator JT W/ 4 Doors & Crew Cab

    GO RHINO

    $581.87
    Jeep Gladiator J Black Steel Contoured 5 Inch Wide Ellipse Shaped Side Bars & Brackets* High Quality Side Bar And Brackets* Made Of Aluminum* Textured Black Powder Coat* Corrosion-Resistant Aluminum...
    V3451687T
    SKU:
    V3451687T
    Width Options:
    5 Inch
    Color:
    Black
    Truck Class:
    Light Duty
    Material Options:
    Aluminum
    Make:
    Jeep
    Product Type:
    Frame & Chassis
    $581.87
    Qty in Cart: 0
    Price:
    $581.87
    Subtotal:
  • On Sale
    Limited Quantity Available
    FREE SHIPPING OVER $249
    3 LB Sledge Hammer W/ 14 Inch Fiberglass Handle

    3 LB Sledge Hammer W/ 14 Inch Fiberglass Handle

    AFTERMARKET

    Now: $18.47
    Was: $35.69
    Carbon Steel Sledge HammerKeep this No. 3 Sledge Hammer handy in your toolbox. It is great for making emergency repairs, breaking up concrete or asphalt, driving stakes to secure posts or tents, and...
    09-21000168
    SKU:
    09-21000168
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Tools
    Ready To Ship:
    Yes
    Now: $18.47
    Was: $35.69
    Qty in Cart: 0
    Price:
    Now: $18.47
    Was: $35.69
    Subtotal:
  • Purple Super Kit W/ Adapter For 13-18 Speed Shifters

    Purple Super Kit W/ Adapter For 13-18 Speed Shifters

    TWISTED SHIFTERZ

    $402.99
    Purple Semi Truck Air Shifter Threaded Adapter Kit Fits 13-18 Speed ShiftersUpgrade your truck's shifter assembly with the Purple Super Kit for 13-18 Speed Shifters. Crafted from high-quality CNC...
    09-151300168
    SKU:
    09-151300168
    Product Type:
    Interior
    Material Options:
    Aluminum
    Color:
    Purple
    Location:
    Made In USA
    Make:
    Universal Items
    $402.99
    Qty in Cart: 0
    Price:
    $402.99
    Subtotal:
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