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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
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
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 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 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
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
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.
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 Boot Brush Guide: Does it Really Keep Your Cab Clean?(Post)Boot Brushes: The Key Takeaways Benefits: Keeps cab floors clean, improves footwear grip on steps and pedals, projects a professional appearance, prevents grit from grinding down interior flooring, a
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 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
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:
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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5 Inch ID/OD Aluminized Steel Exhaust Elbow BOM For Volvo
AFTERMARKET
$91.9990 Degree 5 Inch ID/OD Exhaust Elbow BOM Fits VolvoMaintain efficient exhaust flow and durability on your Volvo truck with this 5 Inch ID/OD Aluminized Steel Exhaust Elbow BOM. Built from aluminized...13-08191800- SKU:
- 13-08191800
- Truck Class:
- Heavy Duty
- Diameter Options:
- 5 Inch
- Degree Options:
- 90
- Make:
- Volvo
- Style Options:
- Elbow
- Product Type:
- Exhaust
$91.99Qty in Cart: 0Price:$91.99Subtotal: -
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: -
FREE SHIPPING OVER $249
FleetGuard Air Filter 13.5 X 16 Inch
OPP - ORIGINAL PARTS PROGRAM
$84.99Air Filter AF25139MFLG* High Quality Air Filter * 13.5 Inch x 16 Inch* Sold Individually* Warranty On Air Filter Against Defects In Workmanship & Material From Date Of Purchase*|** This Is An OEM...AF25139MFLG- SKU:
- AF25139MFLG
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$84.99Qty in Cart: 0Price:$84.99Subtotal: -
18 Inch Chrome-Plated Aluminum 4 Spoke Scorpion Style Wood Steering Wheel
UNITED PACIFIC
$613.99Chrome Aluminum Scorpion Wood Steering WheelThis high quality 18 inch aluminum 4 spoke scorpion style steering wheel has a hand crafted wood rim and is only the wheel, it does not include a hub or...09-1500918- SKU:
- 09-1500918
- Truck Class:
- Universal
- Make:
- Universal Items
- Material Options:
- Aluminum
- Product Type:
- Interior
$613.99Qty in Cart: 0Price:$613.99Subtotal: -
Roadworks 2.25 Inch SS Cab Panel W/ 12 Bullseye LED Lights- Amber LED/ Amber Lens For Peterbilt 386 W/ Fairings & Rear Or Horizontal Exhausts
ROADWORKS
$308.992.25 Inch SS Cab Panel W/ 6 Bullseye Amber- Amber LED Lights Per Panel By Roadworks Fits Peterbilt 386 W/ Fairings & Rear Or Horizontal ExhaustsAdd a bold, illuminated touch to your Peterbilt 386...01-0912101918- SKU:
- 01-0912101918
- Material Options:
- Stainless Steel
- Location:
- Made In USA
- Light Options:
- With Lights
- Color:
- Amber
- Product Type:
- Exterior
- Make:
- Peterbilt
$308.99Qty in Cart: 0Price:$308.99Subtotal: -
FREE SHIPPING OVER $249
Seats Inc. Seat Adapter For Freightliner & Sterling With Ez Rider Seats
SEATS INC
$151.99Seats Inc. Seat Adapter W/ Tethers For Freightliner & Sterling Models With Ez Rider Seats4 State Trucks can help you adapt a new Seat Inc. seat to your Freightliner with an Ez Rider seat with this...179181PS- SKU:
- 179181PS
- Truck Class:
- Heavy Duty
- Make:
- Sterling
- Make:
- Freightliner
- Product Type:
- Seats
- Ready To Ship:
- Yes
$151.99Qty in Cart: 0Price:$151.99Subtotal: -
Holland 5th Wheel Pivot Pocket Insert Kit
OPP - ORIGINAL PARTS PROGRAM
$72.99Holland Replacement Pivot Pocket Insert Kit Fits FW35, FW31, FW33, FW17, FW16, FW83, FWS1, & FWS2 Fifth Wheels.* High Quality Pocket Inserts* Includes: - (2) Inserts - (2) Double Sided Tape* For...09-051100918- SKU:
- 09-051100918
- Product Type:
- Frame & Chassis
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
$72.99Qty in Cart: 0Price:$72.99Subtotal: -
Stainless Steel Rear Air Cleaner Panel W/ 12 Red LED Clear Lens Button Lights For Kenworth W900
ROADWORKS
$402.9915 Inch Stainless Steel Rear Breather PanelThis high quality stainless steel 15 inch rear air cleaner panel the fits Kenworth W900 models has 12 red LED lights with a clear lens. The panel includes...02-0905918- SKU:
- 02-0905918
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Stainless Steel
- Make:
- Kenworth
- Position:
- Rear
- Height Options:
- 15 Inch
- Light Options:
- With Lights
- Product Type:
- Exterior
$402.99Qty in Cart: 0Price:$402.99Subtotal: -
Big Strappers Delta Pro Flexfit Olive Green Hat
BIG STRAPPERS APPAREL
$65,536.00nullppr_299189- SKU:
- ppr_299189
- Product Type:
- Apparel
- Make:
- Universal Items
$65,536.00Qty in Cart: 0Price:$65,536.00Subtotal: -
2.5 Inch Stainless Steel Cab Panels W/ 8 P1 Light Holes For 2012 thru 2016 Peterbilt 386 W/ Cab-Mount Exhaust
PHOENIX DESIGN
$171.992.5 Inch Stainless Steel Cab Panels W/ 8 P1 Light Holes Fits Peterbilt 386 W/ Cab-Mount Exhaust* High Quality Cab Panels * Made Of 304 Stainless Steel * 4 P1 Light Holes Per Side * Lights Not...01-091200918- SKU:
- 01-091200918
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Light Options:
- Without Lights
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Finish Options:
- Polished
- Length Options:
- 40 Inch
- Product Type:
- Exterior
$171.99Qty in Cart: 0Price:$171.99Subtotal: -
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: -
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
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: -
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: -
FREE SHIPPING OVER $249
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: -
FREE SHIPPING OVER $249
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
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: -
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: -
FREE SHIPPING OVER $249
Cab Fresh HVAC Pre-Filter W/ Black Housing For Peterbilt & Kenworth
CAB FRESH FILTER CO.
$50.99Air Filter HVAC Pre-FilterHelp protect your cab's HVAC system with this complete pre-filter assembly featuring a durable housing and replaceable filter element. Designed to capture dust, debris, and...29-091300- SKU:
- 29-091300
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$50.99Qty in Cart: 0Price:$50.99Subtotal: