-
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
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
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
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
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
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 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
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
BESTfit 5 Inch Aluminized Multi-Bend Turbo Pipe Replaces 04-17094-030 For Freightliner FLD
BESTFIT TRUCK PARTS
$135.99Multi-Bend 5 Inch Aluminized Turbo Pipe With Pyrometer Fitting Fits Freightliner FLDThis multi-bend turbo exhaust pipe for Freightliner trucks is made of aluminized steel. It features a 5.850-inch...03-08140300- SKU:
- 03-08140300
- Material Options:
- Steel
- Finish Options:
- Chrome-Plated
- Truck Class:
- Heavy Duty
- Product Type:
- Exhaust
- Make:
- Freightliner
- Ready To Ship:
- Yes
$135.99Qty in Cart: 0Price:$135.99Subtotal: -
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
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
Interior Cab Fresh Air Filter For Peterbilt 330, 335, 340, 357, 367, 377, 378, 379, 385 & 386
CAB FRESH FILTER CO.
$46.73Peterbilt Cab Fresh Air FilterThis air filter is easy to install under the dash. Just slide it into the existing OEM track located by the passenger door. Follow these simple steps, and you'll have it...01-1503018- SKU:
- 01-1503018
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Cloth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$46.73Qty in Cart: 0Price:$46.73Subtotal: -
On SaleFREE SHIPPING OVER $249Limited Quantity Available
Chrome AC Heater Filter Door For Peterbilt
UNITED PACIFIC
Now: $21.74Was: $31.06Air Filter Door Fits Peterbilt* High Quality Filter Door* Made Of Chrome Plated Plastic* Sold Individually* Warranty On Filter Door Against Defects In Workmanship & Material From Date Of...01-1503015- SKU:
- 01-1503015
- Truck Class:
- Heavy Duty
- Material Options:
- Plastic/Poly
- Make:
- Peterbilt
- Finish Options:
- Chrome-Plated
- Product Type:
- Interior
- Ready To Ship:
- Yes
Now: $21.74Was: $31.06Qty in Cart: 0Price:Now: $21.74Was: $31.06Subtotal: -
High Flow Performance Air Filter With Washable Element Media For Volvo With EGR
FLEET FILTERS
$444.99High Performance Air Filter Media Fits Volvo With EGRYou never need to waste money on paper filters again! 4 State Trucks proudly offers Fleet Air Filters, the only lifetime, washable, high flow, air...29-071300030- SKU:
- 29-071300030
- Truck Class:
- Heavy Duty
- Make:
- Volvo
- Product Type:
- Engine Parts
$444.99Qty in Cart: 0Price:$444.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 4965224NX, 4352989NX For Cummins ISM Engine
GLOBAL EMISSIONS
$2,004.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISM Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600030- SKU:
- 29-080600030
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,004.99Qty in Cart: 0Price:$2,004.99Subtotal: -
FREE SHIPPING OVER $249
HVAC Pre-Filter For Kenworth & Peterbilt
FREEDOM AIR FILTERS
$42.05Air Intake HVAC Fits Kenworth T680/T880 And Peterbilt 567/579* High Quality Polyester Mesh Pre-Filter* Mounting Clips Included - Grilles Not Included* Installs Under Hood On Passenger Side Beneath...29-1503007- SKU:
- 29-1503007
- Truck Class:
- Heavy Duty
- Color:
- Black
- Material Options:
- Plastic/Poly
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$42.05Qty in Cart: 0Price:$42.05Subtotal: -
FREE SHIPPING OVER $249
Cab Fresh Replacement Filter For Peterbilt
CAB FRESH FILTER CO.
$17.91Interior Replacement Filter Fits PeterbiltFind aftermarket CAB Fresh replacement air filters for your Peterbilt at 4 State Trucks. It mounts under the dash in the interior of your cab and features...01-1503019- SKU:
- 01-1503019
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Cloth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$17.91Qty in Cart: 0Price:$17.91Subtotal: -
HVAC Intake Pre-Filter For Volvo VNL Gen II 2004-2018
FREEDOM AIR FILTERS
$36.85HVAC Intake Pre-Filter Fits Volvo VNL Gen II 2004-2018* High Quality Intake Pre-Filter* Proprietary Polyester Mesh* Passenger Side* Enhance The Efficiency Of Any Performance Or Exposed Air Filter*...13-150300004- SKU:
- 13-150300004
- Position:
- Passenger Side
- Color:
- Black
- Truck Class:
- Heavy Duty
- Material Options:
- Plastic/Poly
- Make:
- Volvo
- Product Type:
- Interior
$36.85Qty in Cart: 0Price:$36.85Subtotal: -
Cab Fresh Pre- Filter W/ Black Housing For Freightliner Cascadia & Western Star 49X
CAB FRESH FILTER CO.
$30.86Freightliner & Western Star Pre- Filter W/ Black HousingExtend the life of your cabin air filter with the Cab Fresh Pre-Filter for Freightliner Cascadia and Western Star 49X models. The black housing...03-150300- SKU:
- 03-150300
- Product Type:
- Interior
- Style Options:
- Black Housing
- Make:
- Western Star
- Make:
- Freightliner
$30.86Qty in Cart: 0Price:$30.86Subtotal: -
Cab Fresh Pre- Filter W/ Black Housing For Kenworth T180-T480 & Peterbilt 589
CAB FRESH FILTER CO.
$57.99Kenworth & Peterbilt Pre- Filter W/ Black HousingExtend the life of your Kenworth or Peterbilt cab air system with the Cab Fresh Pre-Filter, featuring a durable black housing. Designed to fit over...29-150300- SKU:
- 29-150300
- Product Type:
- Interior
- Style Options:
- Black Housing
- Make:
- Peterbilt
- Make:
- Kenworth
$57.99Qty in Cart: 0Price:$57.99Subtotal: -
FASS Drop- In Series Fuel System Filter Pack W/ 3 Extreme Water Separator Filters & 3 Particulate Filters
FASS
$163.99Drop- In Series Fuel System Filter Pack W/ 3 Extreme Water Separator Filters & 3 Particulate FiltersImprove fuel system protection and filtration performance with this FASS Drop-In Series Fuel System...09-07030015- SKU:
- 09-07030015
- Product Type:
- Engine Parts
- Make:
- Universal Items
$163.99Qty in Cart: 0Price:$163.99Subtotal: -
FASS Drop- In Series Fuel System Filter Pack W/ 1 Extreme Water Separator Filters & 1 Particulate Filters
FASS
$60.99Drop- In Series Fuel System Filter Pack W/ 1 Extreme Water Separator Filters & 1 Particulate FiltersImprove fuel system protection and long-term performance with this FASS Drop-In Series Fuel System...09-07030019- SKU:
- 09-07030019
- Product Type:
- Engine Parts
- Make:
- Universal Items
$60.99Qty in Cart: 0Price:$60.99Subtotal: -
FASS Drop- In Series Fuel System Filter Pack W/ 2 Coalescing Water Separator Filters & 2 Extended Length Particulate Filters
FASS
$120.99Drop- In Series Fuel System Filter Pack W/ 2 Coalescing Water Separator Filters & 2 Extended Length Particulate FiltersEnhance fuel system reliability with this FASS Drop-In Series Filter Pack for...09-07030014- SKU:
- 09-07030014
- Product Type:
- Engine Parts
- Make:
- Universal Items
$120.99Qty in Cart: 0Price:$120.99Subtotal: -
FASS Drop- In Series Fuel System Filter Pack W/ 3 Extreme Water Separator Filters & 3 Extended Life Particulate Filters
FASS
$182.99Drop- In Series Fuel System Filter Pack W/ 3 Extreme Water Separator Filters & 3 Extended Life Particulate FiltersImprove fuel system protection and long-term performance with this FASS Drop-In...09-07030016- SKU:
- 09-07030016
- Product Type:
- Engine Parts
- Make:
- Universal Items
$182.99Qty in Cart: 0Price:$182.99Subtotal: -
FASS Drop- In Series Fuel System Filter Pack W/ 2 Extreme Water Separator Filters & 2 Extended Life Particulate Filters
FASS
$107.99Drop- In Series Fuel System Filter Pack W/ 2 Extreme Water Separator Filters & 2 Extended Life Particulate FiltersImprove fuel system protection and long-term performance with this FASS Drop-In...09-07030018- SKU:
- 09-07030018
- Product Type:
- Engine Parts
- Make:
- Universal Items
$107.99Qty in Cart: 0Price:$107.99Subtotal: