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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
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
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
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
Blatant Signs Your Turbocharger is Failing (And When to Replace it) (Post)If your semi truck turbocharger is failing, you'll encounter a few common signs. In this post, we'll cover what those are, and similar symptoms that aren't actually the turbo, but a related part. Sig
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
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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16-14 AWG Blue Crimp Seal Heat Shrink Male Bullet For .157 Dia. - 10 PCS
AFTERMARKET
$8.9016-14 AWG Heat Shrink Male Bullet For .157 Dia. - 10 PCS* High Quality Heat Shrink Male Bullet* Blue* 10 Pieces* 16-14 AWG .157 Dia.* Adhesive-Lined To Seal The Connection* The Translucent Tubing...09-16030157- SKU:
- 09-16030157
- Truck Class:
- Universal
- Make:
- Universal Items
- Product Type:
- Air, Electrical, & Safety
- Ready To Ship:
- Yes
$8.90Qty in Cart: 0Price:$8.90Subtotal: -
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6 Diode Red LED 157 Hardhat Marker Light
PETERSON MFG
$19.66Hardhat Clearance & Marker Light* High Quality Light * LED 157* LED 6 Diodes* Red Light* Sold Individually* Made in the USA* Warranty on lights against defects in workmanship & material from date of...09-160106071- SKU:
- 09-160106071
- Truck Class:
- Universal
- Make:
- Universal Items
- Color:
- Red
- Location:
- Made In USA
- Shape Options:
- Rectangular
- Material Options:
- Plastic/Poly
- Product Type:
- Lighting
$19.66Qty in Cart: 0Price:$19.66Subtotal: -
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6 Diode Amber LED 157 Hardhat Marker Light
PETERSON MFG
$18.93Hardhat Clearance & Marker Light* High Quality Light* LED 157* LED 6 Diodes* Amber Light* Sold Individually* Made in the USA* Warranty on light against defects in workmanship & material from date of...09-160101070- SKU:
- 09-160101070
- Location:
- Made In USA
- Truck Class:
- Universal
- Material Options:
- Plastic/Poly
- Make:
- Universal Items
- Color:
- Amber
- Shape Options:
- Rectangular
- Product Type:
- Lighting
$18.93Qty in Cart: 0Price:$18.93Subtotal: -
3 Inch Poly Torque Rod Bushing, Hutch Type Replaces E-934 For Watson & Chalin, TL, STL Series
AUTOMANN USA
$4.53Hutch Torque Rod Bushing Replaces D94, E7453, E-7453, R307453Keep your suspension components aligned and protected with this Hutch Type 3-Inch Poly Torque Rod Bushing for Watson & Chalin TL and STL...19-05180157- SKU:
- 19-05180157
- Truck Class:
- Heavy Duty
- Diameter Options:
- 1 Inch
- Material Options:
- Plastic/Poly
- Make:
- Trailer
- Product Type:
- Trailer
$4.53Qty in Cart: 0Price:$4.53Subtotal: -
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: -
Air Spring Cabin 7064, 1S5-157, 67768, 11020074 For International, Kenworth
AFTERMARKET
$48.65Heavy-Duty Air Spring for Superior Cabin SuspensionRide in comfort with new cabin air springs, designed to meet OEM specifications. Built with compressed air technology, these components absorb road...13-09500002- SKU:
- 13-09500002
- Product Type:
- Exterior
- Make:
- International
- Make:
- Kenworth
- Style Options:
- Sleeve
$48.65Qty in Cart: 0Price:$48.65Subtotal: -
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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: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 2871578 For Cummins ISX Engine
GLOBAL EMISSIONS
$2,110.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISX Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600025- SKU:
- 29-080600025
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,110.99Qty in Cart: 0Price:$2,110.99Subtotal: -
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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: -
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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: -
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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: -
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Interior Fresh Air Filter Assembly For Peterbilt
CAB FRESH FILTER CO.
$46.91Peterbilt Fresh Air Filter AssemblyFind aftermarket interior filters with assembly from CAB Fresh at 4 State Trucks. This filter features internal antimicrobials that stops mold growth, reduces odor...01-1503025- SKU:
- 01-1503025
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Cloth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$46.91Qty in Cart: 0Price:$46.91Subtotal: -
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Air Filter Assembly For HVAC No Housing For Peterbilt & Kenworth
CAB FRESH FILTER CO.
$14.27Air Filter Assembly Fits Peterbilt & KenworthWe offer aftermarket CAB Fresh air filter assemblies for Peterbilt 567 and 579 models, and Kenworth T680 and T880 models. The air filter is only for HVAC...29-1503003- SKU:
- 29-1503003
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Cloth
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$14.27Qty in Cart: 0Price:$14.27Subtotal: -
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Black Plastic Cab Fresh Filter For Freightliner Cascadia, Century, Columbia & Coronado
CAB FRESH FILTER CO.
$51.99Cab Fresh Filter Fits FreightlinerReplace your original filter with this cab fresh filter with a charcoal spor-ax antimicrobial layer. This charcoal layer has adsorption properties that help capture...03-091305- SKU:
- 03-091305
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Plastic/Poly
- Make:
- Freightliner
- Color:
- Black
- Product Type:
- Exterior
$51.99Qty in Cart: 0Price:$51.99Subtotal: -
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Interior Cab Fresh Air Filter Replacement For Peterbilt 377, 378, 379 & 385
CAB FRESH FILTER CO.
$43.85Peterbilt Interior Cab Fresh Air FilterThis air filter fits under the dashboard on the passenger side. Simply slide the filter into the existing track next to the passenger door. It replaces the...01-1503017- SKU:
- 01-1503017
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Cloth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$43.85Qty in Cart: 0Price:$43.85Subtotal: -
FREE SHIPPING OVER $249
Cab Fresh Replacement HVAC Pre-Filter For Peterbilt & Kenworth
CAB FRESH FILTER CO.
$14.27Air Filter HVAC Pre-FilterKeep your HVAC system running clean and efficient with this replacement pre-filter designed to fit inside the existing housing assembly. It helps capture dust, debris, and...29-091301- SKU:
- 29-091301
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Make:
- Peterbilt
- Make:
- Kenworth
- Ready To Ship:
- Yes
- Product Type:
- Interior
$14.27Qty in Cart: 0Price:$14.27Subtotal: -
Stainless Steel Cab Panels W/ 10 - 2 Inch Light Holes For Kenworth T800, W900
PHOENIX DESIGN
$181.99Cab Panels W/ 10 - 2 Inch Light Holes Fits Kenworth T800 & W900* High Quality Cab Panel* Made Of 304 Stainless Steel* 5 - 3/4 Inch Round Light Holes Per Side* Lights Not Included* 8 Inch Spacing *...02-091200157- SKU:
- 02-091200157
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Stainless Steel
- Make:
- Kenworth
- Finish Options:
- Paintable
- Length Options:
- 40 Inch
- Light Options:
- Without Lights
- Product Type:
- Exterior
$181.99Qty in Cart: 0Price:$181.99Subtotal: -
Stainless Steel Blank Sleeper Panels W/ Fuel Door Access For Kenworth T800 W/ 86 Inch Sleeper
PHOENIX DESIGN
$464.99Blank Sleeper Panels W/ Fuel Door Access Fit Kenworth T800 W/ 86 Inch Sleeper* High Quality Sleeper Panel * Made Of 304 Stainless Steel * Blank* With Fuel Door * For Trucks With 86 Inch Sleepers*...02-10123157- SKU:
- 02-10123157
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- Kenworth
- Finish Options:
- Paintable
- Length Options:
- 86 Inch
- Light Options:
- Without Lights
- Product Type:
- Exterior
$464.99Qty in Cart: 0Price:$464.99Subtotal: -
Bright Diamond Plate Aluminum Low Profile Crossover Tool Box W/ Rail- 69 Inch For Pickup Trucks
AFTERMARKET
$715.9969 Inch Bright Diamond Plate Aluminum Low Profile Crossover Tool Box W/ Rail Fits Pickup TrucksDesigned for hardworking pickup owners, the Bright Aluminum 69-Inch Low Profile Tool Box with Rail...09-020100157- SKU:
- 09-020100157
- Length Options:
- 69 Inch
- Truck Class:
- Universal
- Height Options:
- 14 Inch
- Width Options:
- 20 Inch
- Material Options:
- Aluminum
- Make:
- Universal Items
- Finish Options:
- Diamond Plate
- Product Type:
- Toolboxes
$715.99Qty in Cart: 0Price:$715.99Subtotal: -
On SaleFREE SHIPPING OVER $249Limited Quantity Available
9005 To H4 Headlight Adapter 9005 Low Beam
UNITED PACIFIC
Now: $3.43Was: $6.24High Beam Wire Harness* High Quality Wire Harness* Replacement Adapter For Projection Headlights With 9005 Bulbs* Sold Individually* Warranty On Wire Harnesses Against Defects In Workmanship &...09-1606157- SKU:
- 09-1606157
- Truck Class:
- Universal
- Make:
- Universal Items
- Product Type:
- Lighting
- Ready To Ship:
- Yes
Now: $3.43Was: $6.24Qty in Cart: 0Price:Now: $3.43Was: $6.24Subtotal: