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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
The Best Semi Truck Half Fenders for Your Big Rig(Post)Upgrading and customizing your truck is part of a long-term vision. After your bumpers and hoods, add some fenders - more specifically: half fenders. Semi truck half fenders are an exceptional way to
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
How to Install Rear Fenders on a Peterbilt 379(Post)The process of installing rear fenders on a semi truck, specifically a Peterbilt 379 model, will depend on the type of fender. Whether it’s a full fender or half fender, the difference comes down to:
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3 Layer Replacement Air Filter Wrap For 29-071300036 High Performance Air Filter For Freightliner Cascadia 116/126
FLEET FILTERS
$195.993 Layer Replacement Air Filter Wrap For High Performance Air Filter* High Quality Replacement Air Filter Wrap* For 29-071300036* 3 Layer Design* Does Not Come Pre-Oiled* Oil Is Required Before...29-071300038- SKU:
- 29-071300038
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
$195.99Qty in Cart: 0Price:$195.99Subtotal: -
Stainless Steel Diesel Particulate Filter Replaces 291-8515, 309-6991, 294-8692 For Caterpillar C7/C9 Engines
GLOBAL EMISSIONS
$2,940.99Stainless Steel Diesel Particulate Filter Fits Caterpillar C7 & C9 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold...29-080600038- SKU:
- 29-080600038
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,940.99Qty in Cart: 0Price:$2,940.99Subtotal: -
11 Inch Rectangular Multi-Mount Amber 24 Diode LED Mini Light Bar
BUYERS PRODUCTS
$108.99Rectangular Amber LED Amber Lens Mini Light Bar* High Quality Mini Light Bar* Light Color Amber* Plastic Housing* Lens Made Of Polycarbonate* Dimension - 11 Inch Width - 2.160 Inch Height - 11...09-160900038- SKU:
- 09-160900038
- Color:
- Amber
- Truck Class:
- Universal
- Material Options:
- Plastic/Poly
- Shape Options:
- Rectangular
- Make:
- Universal Items
- Length Options:
- 11 Inch
- Product Type:
- Lighting
$108.99Qty in Cart: 0Price:$108.99Subtotal: -
Merritt Aluminum Cab Rack W/ 2 Enclosures 80 X 68 X 11 Inch
MERRITT
$4,593.99Aluminum Cab Rack W/ Jail Bar WindowKeep your cab protected and your gear organized with the Merritt 68 x 80 Inch Aluminum Cab Rack. Equipped with two enclosures with chain racks and a 27" x 23" jail...320381M0115- SKU:
- 320381M0115
- Height Options:
- 68 Inch
- Width Options:
- 80 Inch
- Material Options:
- Aluminum
- Product Type:
- Cargo Control
- Location:
- Made In USA
- Make:
- Universal Items
- Length Options:
- 11 Inch
$4,593.99Qty in Cart: 0Price:$4,593.99Subtotal: -
Intake Pre-Filter For LAF3551 Air Filter
FREEDOM AIR FILTERS
$76.99Intake 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
$76.99Qty in Cart: 0Price:$76.99Subtotal: -
Turnpike Truck Trim 11 Inch Stainless Steel 2 Piece Drop Visor For Peterbilt
TURNPIKE TRUCK TRIM
$377.9911 Inch Stainless Steel 2 Piece Drop Visor By Turnpike Truck Trim Fits PeterbiltEnhance the front-end appearance of your Peterbilt flat top with the Turnpike Truck Trim 11 Inch Stainless Steel Drop...01-09003038- SKU:
- 01-09003038
- Height Options:
- 11 Inch
- Make:
- Peterbilt
- Light Options:
- Without Lights
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Type Options:
- Standard Mount
- Product Type:
- Exterior
- Cab Style:
- Flat Windshield
- Style Options:
- Drop
- Ready To Ship:
- Yes
$377.99Qty in Cart: 0Price:$377.99Subtotal: -
3 Inch Stainless Steel Cab Panels W/ 11 Total Amber/Clear Smoked LEDs For Peterbilt 389 131 BBC
PHOENIX DESIGN
$374.993 Inch Stainless Steel Cab Panels W/ 11 Total Amber/Clear Smoked LEDsWhen durability meets design, you get these 3 Inch Stainless Steel Cab Panels with 11 total amber/clear smoked LEDs, built for the...01-091200387- SKU:
- 01-091200387
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Light Options:
- With Lights
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Finish Options:
- Paintable
- Length Options:
- 47 Inch
- Product Type:
- Exterior
$374.99Qty in Cart: 0Price:$374.99Subtotal: -
12 X 11 Inch Black Powder-Coated Vertical Mount Traffic Cone Holders - Holds 10 - 28 Inch Cones
BUYERS PRODUCTS
$36.68Black Powder-Coated Carbon Steel Vertical Mount Traffic Cone Holder* High Quality Traffic Cone Holder* Color Powder Coat Black* Allows Easy Stacking* Dimensions - 11 Inch Width - 12 Inch Height -...09-02060038- SKU:
- 09-02060038
- Truck Class:
- Universal
- Width Options:
- 11 Inch
- Diameter Options:
- 11 Inch
- Height Options:
- 12 Inch
- Make:
- Universal Items
- Material Options:
- Steel
- Color:
- Black
- Product Type:
- Cargo Control
$36.68Qty in Cart: 0Price:$36.68Subtotal: -
BESTfit Chrome 18 Inch Texas Bumper, 10 Gauge W/ Boxed Ends & Tow Holes For Kenworth W990
BESTFIT TRUCK PARTS
$749.99BESTfit Kenworth 10 Gauge-Chrome Plated Steel 18 Inch Boxed End Texas Bumper W/ Mounting & Tow Holes* High Quality Bumper* Made Of 10 Gauge Chrome Plated Steel* 18 Inches Height * Standard Mount...02-010018038K- SKU:
- 02-010018038K
- Height Options:
- 18 Inch
- Truck Class:
- Heavy Duty
- Style Options:
- Texas Boxed End
- Material Options:
- Steel
- Make:
- Kenworth
- Finish Options:
- Chrome-Plated
- Product Type:
- Bumpers
- Type Options:
- Standard Mount
- Size Options:
- 10 Gauge
- Ready To Ship:
- Yes
$749.99Qty in Cart: 0Price:$749.99Subtotal: -
EPDM Molded Refrigerant NO8 Air Suction Hose 1 ID X 11 3/16 Inch Replaces 01-32303-000 For Freightliner
AUTOMANN USA
$14.01Freightliner 11 3/16 Inch Air Suction HoseThe EPDM Molded Refrigerant NO8 Air Suction Hose delivers superior durability and performance for Freightliner trucks. Crafted from premium EPDM material and...03-07020038- SKU:
- 03-07020038
- Material Options:
- Rubber
- Diameter Options:
- 1 Inch
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
$14.01Qty in Cart: 0Price:$14.01Subtotal: -
FREE SHIPPING OVER $249
4 Inch Stainless Steel Low Profile Bezel - Flange Mount
GRAND GENERAL
$20.52SS Bezel W/ Flange Mount For 4 Inch Round Low Profile LED Lights* High Quality Bezel* Made Of Stainless Steel* Fits Syder, Mega 10 Lights (Lights Not Included)* Low Profile* Anti Theft Design Using 3...09-1610038- SKU:
- 09-1610038
- Truck Class:
- Universal
- Shape Options:
- Round
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Diameter Options:
- 4 Inch
- Product Type:
- Lighting
- Ready To Ship:
- Yes
$20.52Qty in Cart: 0Price:$20.52Subtotal: -
Merritt Dyna-Light Aluminum Cab Rack 68 X 80 Inch W/ 2 Side Enclosures & Locking Doors 18 X 9 Inch
MERRITT
$4,692.99Diamond Plate Aluminum Cab Rack W/ Radius Corners & HangersReinforce your truck with the Merritt Dyna-Light 2 Door Cab Rack 68 x 80 Inch, a high-strength aluminum rack with diamond plate construction...320381M0098- SKU:
- 320381M0098
- Material Options:
- Aluminum
- Truck Class:
- Heavy Duty
- Finish Options:
- Diamond Plate
- Make:
- Universal Items
- Product Type:
- Cargo Control
$4,692.99Qty in Cart: 0Price:$4,692.99Subtotal: -
Merritt Dyna-Light Aluminum Cab Rack 68 X 80 Inch W/ 9 Inch Side Enclosures
MERRITT
$4,107.99Aluminum Cab Rack W/ 2 Side Enclosures 9 Inch & Radius Corners* High Quality Cab Rack* Made Of Aluminum * Dimensions: - 68 Inch Height - 80 Inch Length* 2- 9 Inch Side Enclosures* Merritt...320381- SKU:
- 320381
- Truck Class:
- Heavy Duty
- Product Type:
- Cargo Control
- Material Options:
- Aluminum
- Make:
- Universal Items
$4,107.99Qty in Cart: 0Price:$4,107.99Subtotal: -
FREE SHIPPING OVER $249
Interior Fresh Air Filter For Peterbilt
CAB FRESH FILTER CO.
$22.07Peterbilt Interior Fresh Air Filter AssemblyKeep the inside of your cab fresh with this aftermarket interior filter from CAB Fresh. This filter features internal antimicrobials that stops mold...01-1503026- SKU:
- 01-1503026
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Cloth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$22.07Qty in Cart: 0Price:$22.07Subtotal: -
On SaleLimited Quantity AvailableFREE SHIPPING OVER $249
Chrome LED Light Bar Bezel
UNITED PACIFIC
Now: $4.86Was: $18.79Chrome Single Light Bar BezelDress up an 11 diode single light bar with this shiny bezel by United Pacific. It is made of chrome plated plastic and simply snaps over your light. The bezel is sold...09-1605038- SKU:
- 09-1605038
- Truck Class:
- Universal
- Material Options:
- Plastic/Poly
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Product Type:
- Lighting
- Ready To Ship:
- Yes
Now: $4.86Was: $18.79Qty in Cart: 0Price:Now: $4.86Was: $18.79Subtotal: -
AirDog Champ High Pressure Fuel Air Separator For Detroit Diesel DD15 Engines
AIRDOG HD
$468.99High Pressure Fuel Air Separator Fits Detroit Diesel DD15 EnginesOptimize fuel flow on your Detroit Diesel DD15 engine with the AirDog Champ High Pressure Fuel Air Separator. The Champ Series kit...29-070300038- SKU:
- 29-070300038
- Product Type:
- Engine Parts
$468.99Qty in Cart: 0Price:$468.99Subtotal: -
FREE SHIPPING OVER $249
Pre-Filter For Air Cleaner For Kenworth & Peterbilt
CAB FRESH FILTER CO.
$33.71Pre-Filter For Air Cleaner Fits Kenworth & PeterbiltWe offer aftermarket CAB Fresh pre-filters for air cleaners that fits Kenworth T680, T880, Peterbilt 567 and 579 big rigs. It features activated...29-0905708- SKU:
- 29-0905708
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Cloth
- Make:
- Peterbilt
- Make:
- Kenworth
- Product Type:
- Exterior
- Ready To Ship:
- Yes
$33.71Qty in Cart: 0Price:$33.71Subtotal: -
FREE SHIPPING OVER $249
Cab Fresh Filter Only For Freightliner Cascadia, Century, Columbia & Coronado
CAB FRESH FILTER CO.
$17.91Cab Fresh Filter Only Fits FreightlinerFind your Cab Fresh Replacement Filter at 4 State Trucks. The highly effective filter is made with a primary layer and charcoal layer that traps and eliminates...03-091306- SKU:
- 03-091306
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Cloth
- Make:
- Freightliner
- Product Type:
- Exterior
$17.91Qty in Cart: 0Price:$17.91Subtotal: -
FREE SHIPPING OVER $249
Air Filter Assembly For HVAC For Peterbilt & Kenworth
CAB FRESH FILTER CO.
$38.75Air Filter Assembly Fits Peterbilt & KenworthAt 4 State Trucks we offer aftermarket CAB Fresh air filter assemblies for Peterbilt 567 and 579 models, and Kenworth T680 and T880 models. The air filter...29-1503002- SKU:
- 29-1503002
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Cloth
- Make:
- Peterbilt
- Make:
- Kenworth
- Product Type:
- Interior
- Ready To Ship:
- Yes
$38.75Qty in Cart: 0Price:$38.75Subtotal: -
Power Steering Pump Fits Cummins C, ISC & ISL Engines For Kenworth & Peterbilt
AFTERMARKET
$449.99PS Type Power Steering Pump Replaces K188252. K188-252. 21370253. 02-137025-3. 1002392. 10-02392. PS362815R102Maintain optimal steering performance with this high-quality TRW-PS Type Power Steering...29-07120038- SKU:
- 29-07120038
- Product Type:
- Engine Parts
- Style Options:
- Cummins
- Material Options:
- Aluminum
- Make:
- Peterbilt
- Make:
- Kenworth
$449.99Qty in Cart: 0Price:$449.99Subtotal: