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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
Top 10 Semi Truck Winter Accessories for Heavy-Duty Drivers(Post)Winter truck driving can be downright trecherous to haul payloads in, especially when you don't have the right winter-ready trucker gear to get you through difficult drives in below-freezing temperatu
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
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
Adapt to the Diesel Fuel Crisis Using These 10 Truck Mods(Post)Small aftermarket semi truck accessories and performance upgrades save more money over time than their upfront price suggests. Here are 10 aftermarket truck upgrades to create cost-per-mile savings. T
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
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
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 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
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
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
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 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
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2.5 Inch Stainless Steel Cab Panels W/ 10 P1 Amber/Amber LEDs For Peterbilt 386 W/ Rear-Mount Exhaust
PHOENIX DESIGN
$308.992.5 Inch Stainless Steel Cab Panels W/ 10 P1 Amber LED Amber Lens Lights Fits Peterbilt 386 W/ Rear-Mount Exhaust* High Quality Cab Panels * Made Of 304 Stainless Steel * 5 P1 Lights Per Side* Amber...01-091200940- SKU:
- 01-091200940
- Light Options:
- With Lights
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Finish Options:
- Polished
- Length Options:
- 44 Inch
- Product Type:
- Exterior
$308.99Qty in Cart: 0Price:$308.99Subtotal: -
10 Micron Fuel Water Separator Filter
OPP - ORIGINAL PARTS PROGRAM
$42.04Donaldson 10 Micron Fuel Water Separator FilterRemove contaminates and water from your fuel system with this Donaldson fuel filter and water separator cartridge. It separates water in the fuel system...DNP550849- SKU:
- DNP550849
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$42.04Qty in Cart: 0Price:$42.04Subtotal: -
RigMaster APU 10 Ft AC Suction Hose # 10 - Evaporator To Frame Bulk For Caterpillar, Perkins LG200, Kohler
RIGMASTER
$157.99RigMaster 10 Foot Evaporator to Frame Bulkhead Suction Size 10 Hose- Low Pressure* High Quality Suction Hose* 10 Feet* Number 10* Evaporator To Frame Bulkhead* Low Pressure* Sold Individually*...LG9403- SKU:
- LG9403
- Location:
- Made In USA
- Material Options:
- Rubber
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$157.99Qty in Cart: 0Price:$157.99Subtotal: -
RigMaster APU Suction Hose # 10 Bulkhead To Compressor
RIGMASTER
$84.99Bulkhead To Compressor Suction Hose Size 10* High Quality Suction Hose* Number 10* Bulkhead To Compressor* Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From Date...RP9401- SKU:
- RP9401
- Material Options:
- Rubber
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Make:
- Universal Items
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$84.99Qty in Cart: 0Price:$84.99Subtotal: -
RigMaster APU Suction Hose #10 Bulkhead to Evaporator - Low
RIGMASTER
$184.99Bulkhead to Evaporator Suction Hose Size 10* High Quality Suction Hose* Number 10* Bulkhead To Evaporator * Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From...RP9404- SKU:
- RP9404
- Location:
- Made In USA
- Material Options:
- Rubber
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$184.99Qty in Cart: 0Price:$184.99Subtotal: -
RigMaster APU Suction Hose # 10 - Compressor To Frame For Kohler Engine
RIGMASTER
$84.99Compressor To Frame Suction Size 10 Hose* High Quality Suction Hose* Number 10 Size* Compressor To Frame* Sold Individually* Warranty On Suction Hoses Against Defects In Workmanship & Material From...LG9406- SKU:
- LG9406
- Location:
- Made In USA
- Material Options:
- Rubber
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$84.99Qty in Cart: 0Price:$84.99Subtotal: -
RigMaster APU Suction Hose # 10 - Compressor to Frame For Caterpillar, Perkins LG200
RIGMASTER
$78.99Compressor to Frame Suction Size 10 Hose* High Quality Suction Hose* Number 10 Size* Compressor To Frame* Sold Individually* Warranty On Suction Hoses Against Defects In Workmanship & Material From...LG9401- SKU:
- LG9401
- Truck Class:
- Heavy Duty
- Material Options:
- Aluminum
- Location:
- Made In USA
- Make:
- Universal Items
- Product Type:
- Engine Parts
$78.99Qty in Cart: 0Price:$78.99Subtotal: -
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: -
RigMaster APU 10 Ft Liquid Hose # 6 - Frame Bulkhead To Evaporator High Pressure For Caterpillar, Perkins LG200, Kohler
RIGMASTER
$85.9910 Foot Frame Bulkhead To Evaporator Size 6 Hose- High Pressure* High Quality Liquid Hose* 10 Feet* Number 8 Size* Bulkhead To Evaporator * High Pressure* Sold Individually* Warranty On Liquid Hoses...LG9404- SKU:
- LG9404
- Material Options:
- Rubber
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Make:
- Universal Items
- Product Type:
- Engine Parts
$85.99Qty in Cart: 0Price:$85.99Subtotal: -
FREE SHIPPING OVER $249
BESTfit Alumzd Steel Elbow Pipe W/ 90 Degree Bend For Peterbilt 377, 378 & 379
BESTFIT TRUCK PARTS
$234.99Alumzd Steel Elbow Pipe W/ 5 Inch ID/OD By BESTfit Fits Peterbilt 377, 378 & 379The BESTfit 5 Inch I.D./O.D. 90 Degree Exhaust Elbow Pipe provides a perfect fit for Peterbilt 377, 378, and 379...01-08133940- SKU:
- 01-08133940
- Diameter Options:
- 5 Inch
- Truck Class:
- Heavy Duty
- Style Options:
- Elbow
- Degree Options:
- 90
- Make:
- Peterbilt
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
- Location:
- Made In USA
- Material Options:
- Aluminized Steel
$234.99Qty in Cart: 0Price:$234.99Subtotal: -
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: -
10 Micron Fuel-Water Separator Filter
OPP - ORIGINAL PARTS PROGRAM
$30.2410 Micron Fuel-Water Separator Filter* High Quality Fuel Water Separator Filter* Filter* Sold Individually * Warranty On Fuel Water Separator Filter Against Defects In Workmanship & Material From...FS19764FLG- SKU:
- FS19764FLG
- Truck Class:
- Heavy Duty
- Make:
- Western Star
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$30.24Qty in Cart: 0Price:$30.24Subtotal: -
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: -
Stainless Steel Diesel Particulate Filter Replaces 2517331C91 For International W/ MaxxForce 7/DT Engine
GLOBAL EMISSIONS
$1,634.99Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce 7/DT Engines - Replaces 2517331C91* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...07-080600002- SKU:
- 07-080600002
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- International
- Product Type:
- Exhaust
$1,634.99Qty in Cart: 0Price:$1,634.99Subtotal: -
2 Way Lumbar Switch For Bostrom Seats
BOSTROM TRUCK SEATS
$183.99Lumbar Switch For Bostrom SeatsIs the lumbar switch for your suspension seat not working? 4 State Trucks offers this high quality replacement 2 way switch for fit for a Bostrom Seat. It is sold...6222294001- SKU:
- 6222294001
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Seats
$183.99Qty in Cart: 0Price:$183.99Subtotal: -
Textured Black RB20 Running Boards For GMC Sierra, Chevrolet Silverado 2500HD, 3500HD Crew Cab
GO RHINO
$555.50Go Rhino 69405187PC RB20 Running Boards Plus Brackets Complete Kit* High Quality Running Boards* Cab Length Running Boards For Popular Crew Cab And Extended Cab Trucks* Includes Mounting Brackets For...69405187PC- SKU:
- 69405187PC
- Truck Class:
- Light Duty
- Color:
- Black
- Material Options:
- Steel
- Make:
- Chevrolet
- Make:
- GMC
- Finish Options:
- Galvanized
- Product Type:
- Frame & Chassis
$555.50Qty in Cart: 0Price:$555.50Subtotal: -
Lumbar Valve For Knoedler Air Chief Seat, Driver Side
KNOEDLER
$81.99Driver Side Lumbar Valve For Knoedler Air Chief SeatThis replacement valve allows for easy adjustment to maintain the appropriate pressure levels, ensuring optimal support and comfort even with...940004- SKU:
- 940004
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Seats
$81.99Qty in Cart: 0Price:$81.99Subtotal: -
RigMaster Liquid Hose #6 Bulkhead To Evaporator - High
RIGMASTER
$135.99Bulkhead To Evaporator Liquid Hose Size 6* High Quality Liquid Hose* Number 6* Bulkhead To Evaporator * Sold Individually* Warranty On A/C Hoses Against Defects In Workmanship & Material From Date Of...RP9405- SKU:
- RP9405
- Material Options:
- Rubber
- Truck Class:
- Universal
- Location:
- Made In USA
- Make:
- Universal Items
- Product Type:
- Engine Parts
$135.99Qty in Cart: 0Price:$135.99Subtotal: -
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: