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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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Filter Fuel Water Separator Replaces Donaldson P557004 For MX Paccar Engines
OPP - ORIGINAL PARTS PROGRAM
$64.99Donaldson Fuel Filter and Water Separator CartridgeThe Fuel Filter and Water Separator removes contaminants and water from the fuel system.* High Quality Fuel Water Separator Filter* P557004...DNP557004- SKU:
- DNP557004
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
$64.99Qty in Cart: 0Price:$64.99Subtotal: -
Bulldog HD Rear Shock Absorber Replaces 14QK-413M4, 25624341, 57241-004 For Mack CH
BULLDOG HD SHOCKS
$49.40Heavy Duty Shock Absorber Fits Mack CH 1989-2004Bulldog HD shocks are fleet tested and approved. This is a premium rear replacement shock reengineered to be better than the factory part that came...11-050000004- SKU:
- 11-050000004
- Truck Class:
- Heavy Duty
- Length Options:
- 23 Inch
- Make:
- Mack
- Product Type:
- Frame & Chassis
$49.40Qty in Cart: 0Price:$49.40Subtotal: -
3 Layer Replacement Air Filter Wrap For 29-071300044 High Performance Air Filter
FLEET FILTERS
$112.993 Layer Replacement Air Filter Wrap For High Performance Air Filter* High Quality Replacement Air Filter Wrap* For 29-071300044* 3 Layer Design* Does Not Come Pre-Oiled* Oil Is Required Before...29-071300045- SKU:
- 29-071300045
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$112.99Qty in Cart: 0Price:$112.99Subtotal: -
3 Layer Replacement Air Filter Wrap For 29-071300042 High Performance Air Filter
FLEET FILTERS
$112.993 Layer Replacement Air Filter Wrap For High Performance Air Filter* High Quality Replacement Air Filter Wrap* For 29-071300042* 3 Layer Design* Does Not Come Pre-Oiled* Oil Is Required Before...29-071300043- SKU:
- 29-071300043
- Truck Class:
- Heavy Duty
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Engine Parts
$112.99Qty in Cart: 0Price:$112.99Subtotal: -
Stainless Steel Diesel Particulate Filter Replaces 5010832R91 For International W/ MaxxForce Engine
GLOBAL EMISSIONS
$2,004.99Stainless Steel Diesel Particulate Filter Fits International W/ MaxxForce Engine - Replaces 5010832R91* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And...07-080600004- SKU:
- 07-080600004
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- International
- Product Type:
- Exhaust
$2,004.99Qty in Cart: 0Price:$2,004.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces A6804910494 For Detroit DD13, DD15 Engines
GLOBAL EMISSIONS
$1,360.991-Piece Stainless Steel Diesel Particulate Filter Fits Detroit DD13 & DD15 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability*...29-080600043- SKU:
- 29-080600043
- Truck Class:
- Heavy Duty
- Style Options:
- Detroit
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,360.99Qty in Cart: 0Price:$1,360.99Subtotal: -
Stainless Steel Diesel Particulate Filter Replaces 261-2318, 220-6054, 264-1556 For Caterpillar C9 Engine
GLOBAL EMISSIONS
$2,589.99Stainless Steel Diesel Particulate Filter Fits Caterpillar C9 Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold Individually *...29-080600040- SKU:
- 29-080600040
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,589.99Qty in Cart: 0Price:$2,589.99Subtotal: -
RigMaster Diesel Glow Plug For Kohler Engine
RIGMASTER
$60.99Kohler Diesel Glow Plug - K-004* High Quality Glow Plug* Sold Individually* Warranty On Glow Plugs Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...K004- SKU:
- K004
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Universal Items
- Product Type:
- Engine Parts
$60.99Qty in Cart: 0Price:$60.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces A6804910894 For Detroit DD13, DD15 Engines
GLOBAL EMISSIONS
$1,266.991-Piece Stainless Steel Diesel Particulate Filter Fits Detroit DD13 & DD15 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability*...29-080600042- SKU:
- 29-080600042
- Truck Class:
- Heavy Duty
- Style Options:
- Detroit
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,266.99Qty in Cart: 0Price:$1,266.99Subtotal: -
Front of Rear Spring Leaf Hanger Driver Side- Replaces 1611639004 For Freightliner Airliner
AFTERMARKET
$154.99Rear Hanger Replaces 1611639004Support your Freightliner Airliner's suspension with this Front of Rear Spring Leaf Hanger, Driver Side, engineered for durability and precision. Replacing OEM...03-05100048- SKU:
- 03-05100048
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Make:
- Freightliner
- Product Type:
- Frame & Chassis
$154.99Qty in Cart: 0Price:$154.99Subtotal: -
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: -
3 Layer Replacement Air Filter Wrap For 29-071300039 High Performance Air Filter
FLEET FILTERS
$112.993 Layer Replacement Air Filter Wrap For High Performance Air Filter* High Quality Replacement Air Filter Wrap* For 29-071300039* 3 Layer Design* Does Not Come Pre-Oiled* Oil Is Required Before...29-071300040- SKU:
- 29-071300040
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
$112.99Qty in Cart: 0Price:$112.99Subtotal: -
3 Layer Replacement Air Filter Wrap For 29-090500002 High Performance Air Filter
FLEET FILTERS
$383.993 Layer Replacement Air Filter Wrap For High Performance Air Filter* High Quality Replacement Air Filter Wrap* For 29-090500002* 3 Layer Design* Does Not Come Pre-Oiled* Oil Is Required Before...29-090500004- SKU:
- 29-090500004
- Truck Class:
- Heavy Duty
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Exterior
$383.99Qty in Cart: 0Price:$383.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 5273093NX For Cummins ISM Engine
GLOBAL EMISSIONS
$2,070.991-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...29-080600047- SKU:
- 29-080600047
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,070.99Qty in Cart: 0Price:$2,070.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 5295603NX, 5579367 For Cummins ISB Engine
GLOBAL EMISSIONS
$1,476.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISB Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600048- SKU:
- 29-080600048
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,476.99Qty in Cart: 0Price:$1,476.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 5295606NX, 5579357 For Cummins ISC Engine
GLOBAL EMISSIONS
$2,020.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISC Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600049- SKU:
- 29-080600049
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,020.99Qty in Cart: 0Price:$2,020.99Subtotal: -
High Flow Performance Air Filter With Washable Element Media For Freightliner, Western Star
FLEET FILTERS
$585.99High Performance Air Filter Media Fits Freightliner, Western StarYou never need to waste money on paper filters again! 4 State Trucks proudly offers Fleet Air Filters, the only lifetime, washable,...29-071300044- SKU:
- 29-071300044
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
$585.99Qty in Cart: 0Price:$585.99Subtotal: -
Stainless Steel Diesel Particulate Filter Replaces 2871462NX, 5579366 For Cummins, PACCAR ISB, PX6 Engines
GLOBAL EMISSIONS
$1,509.99Stainless Steel Diesel Particulate Filter Fits Cummins/PACCAR ISB & PX6 Engines* High Quality Diesel Particulate Filter* Made Of Stainless Steel * OEM Quality Clamps And Gaskets Included* Sold...29-080600046- SKU:
- 29-080600046
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,509.99Qty in Cart: 0Price:$1,509.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 5295604, 5283283 For Cummins ISX Engine
GLOBAL EMISSIONS
$2,120.991-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...29-080600044- SKU:
- 29-080600044
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Product Type:
- Exhaust
- Make:
- Universal Items
$2,120.99Qty in Cart: 0Price:$2,120.99Subtotal: -
1-Piece Stainless Steel Diesel Particulate Filter Replaces 2871461NX, 3618711, Q629355 For Cummins ISB Engine
GLOBAL EMISSIONS
$1,641.991-Piece Stainless Steel Diesel Particulate Filter Fits Cummins ISB Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600045- SKU:
- 29-080600045
- Truck Class:
- Heavy Duty
- Style Options:
- Cummins
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$1,641.99Qty in Cart: 0Price:$1,641.99Subtotal: