-
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
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
FREE SHIPPING OVER $249
BESTfit Intermediate Elbow Replaces M66-1215 For Kenworth T600, T800 & W900
BESTFIT TRUCK PARTS
$215.99BESTfit Intermediate Elbow Fits Kenworth 1986-2006* High Quality Elbow* Made Of Aluminized Steel* Located on Driver Side Between the Exhaust Tee Flex Pipe and BOM Elbow* Sold Individually* Warranty...02-08112150- SKU:
- 02-08112150
- Truck Class:
- Heavy Duty
- Style Options:
- Elbow
- Material Options:
- Aluminized Steel
- Make:
- Kenworth
- Diameter Options:
- 5 Inch
- Degree Options:
- 45
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$215.99Qty in Cart: 0Price:$215.99Subtotal: -
Ridewell RCA-215HM High Mount Lift Axle - Pre-plumbed W/ Outside Monitor
RIDEWELL
$6,109.99Ridewell RCA-215HM High Mount Lift Axle - Professional Pre-Plumbed SystemEnhance your vehicle's load-bearing capabilities with the premium Ridewell RCA-215HM system. This professional-grade solution...2150205-01- SKU:
- 2150205-01
- Product Type:
- Frame & Chassis
$6,109.99Qty in Cart: 0Price:$6,109.99Subtotal: -
BESTfit D13 Flywheel Replaces 21514067 For Mack MP8 & Volvo
BESTFIT TRUCK PARTS
$442.99BESTfit Flywheel For Mack MP8 & Volvo D13 Engines* High Quality Flywheel* For Mack MP8 And Volvo D13* Sold Individually* Warranty On Flywheels Against Defects In Workmanship & Material From Date Of...29-0721514067- SKU:
- 29-0721514067
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Mack
- Make:
- Volvo
- Product Type:
- Engine Parts
$442.99Qty in Cart: 0Price:$442.99Subtotal: -
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 Electric Fan Temperature Sensor Kit For Caterpillar, Perkins Engines
RIGMASTER
$65.99Temperature Sensor Kit For Electric Fan - RP7-215A-K* High Quality Temperature Sensor Kit * For Electric Fan * Sold Individually * Warranty On Temperature Sensor Kits Against Defects In Workmanship &...RP7215AK- SKU:
- RP7215AK
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$65.99Qty in Cart: 0Price:$65.99Subtotal: -
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
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
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: -
Shackle Wear Plate Type 17 For Mack, Volvo, Hendrickson
AUTOMANN USA
$11.55Hendrickson Shackle Plate For RB Bushing* High Quality Shackle Plate* Dimensions: - 207 MM Length - 164 MM Width - 124 MM C To C - 21 MM Height* For RB Bushing* Side Bar Type- 17* Sold...29-05091215- SKU:
- 29-05091215
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Volvo
- Make:
- Mack
- Product Type:
- Frame & Chassis
$11.55Qty in Cart: 0Price:$11.55Subtotal: -
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: -
TPHD 80 Inch Stainless Steel Half Fenders With Extra Long Front Drop, 14 Gauge
TPHD
$764.9980 Inch 14 Gauge Stainless Steel Low Straight Drop Half Fenders By TPHDIntroducing the 80-inch Low Straight Drop Half Fenders crafted from durable 14-gauge stainless steel by TPHD. These 80-inch low...09-11030215- SKU:
- 09-11030215
- Truck Class:
- Universal
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Finish Options:
- Polished
- Product Type:
- Rear Fenders
- Height Options:
- 35 Inch
- Style Options:
- Half Fender
- Length Options:
- 80 Inch
- Location:
- Made In USA
- Width Options:
- 24 Inch
- Size Options:
- 14 Gauge
- Ready To Ship:
- Yes
$764.99Qty in Cart: 0Price:$764.99Subtotal: -
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
Chrome LED Indicator Light - Green
VELVAC
$7.34Green LED Indicator LightThis green LED indicator light features chrome plated housing and mounts in a 7/16 inch hole. It is rated for 15mA at 12VDC and has a 100,000 hours estimated bulb life...090215- SKU:
- 090215
- Truck Class:
- Universal
- Make:
- Universal Items
- Color:
- Green
- Product Type:
- Lighting
$7.34Qty in Cart: 0Price:$7.34Subtotal: -
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
CAT Fuel Filter FF5319 3406 C-E
OPP - ORIGINAL PARTS PROGRAM
$21.42FF5319 CAT Fuel Filter 3406 C-EThis Fleetguard Spin-On Fuel Filter actively filters and improves fuel efficiency for your vehicle. It removes contaminants, enhances engine performance, and reduces...FF5319FLG- SKU:
- FF5319FLG
- Truck Class:
- Heavy Duty
- Material Options:
- Plastic/Poly
- Make:
- Freightliner
- Make:
- International
- Make:
- Other - Semi-Truck
- Make:
- Kenworth
- Make:
- Peterbilt
- Make:
- Mack
- Make:
- Volvo
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$21.42Qty in Cart: 0Price:$21.42Subtotal: -
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: -
FREE SHIPPING OVER $249
CSM SS 7 Inch Wide Lower Step Cover For 34 Inch Box For Kenworth W900
CHROME SHOP MAFIA
$114.997 Inch Wide Stainless Steel Lower Step Cover For 34 Inch Box By Chrome Shop Mafia* High Quality Lower Step Cover* 304 Stainless Steel* Lower* Step Cover* For 34 Inch Box* With 7 Inch Wide Lower Step*...02-0503215- SKU:
- 02-0503215
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Width Options:
- 7 Inch
- Position:
- Lower
- Material Options:
- Stainless Steel
- Make:
- Kenworth
- Product Type:
- Frame & Chassis
$114.99Qty in Cart: 0Price:$114.99Subtotal: