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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
5 Unique Lug Nut Cover Styles to Give Your Truck a More Polished Look(Post)Semi truck lug nut covers aren’t just useful in protecting your lug nut and wheel studs, but they’re a great way to achieve a more polished, cleaner look at a low-cost. Here are some of the coolest-l
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
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FREE SHIPPING OVER $249
Caterpillar 256-8753 Fuel Water Separator
OPP - ORIGINAL PARTS PROGRAM
$47.63Caterpillar 256-8753 Fuel Water Separator* Sold Individually* Warranty On Separator Filter Against Defects In Workmanship & Material From Date Of Purchase*** This Is An OEM Replacement Part/ Not...2568753- SKU:
- 2568753
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$47.63Qty in Cart: 0Price:$47.63Subtotal: -
Fleetguard AF25667FLG Air Filter For Donaldson Internal Air Cleaner
OPP - ORIGINAL PARTS PROGRAM
$94.99Breather Filter Fits Freightliner FL50-FL80, IHC 8600, Kenworth T370, T680, T800, Peterbilt 365, 386, 389, 579* High Quality Air Filter* For Donaldson Internal Air Cleaners* Warranty On Air Filters...AF25667FLG- SKU:
- AF25667FLG
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Make:
- International
- Make:
- Kenworth
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$94.99Qty in Cart: 0Price:$94.99Subtotal: -
FREE SHIPPING OVER $249
BESTfit 68 Degree Turbo Pipe W/ 4.86 Inch ID & 5.85 Inch OD Flange For Peterbilt 377, 378 & 379 Replaces 14-14256
BESTFIT TRUCK PARTS
$92.9968 Degree Turbo Pipe W/ 4.86 Inch ID & 5.85 Inch OD Flange By BESTfit Replaces 14-14256 Fits Peterbilt 377, 378 & 379Upgrade your Peterbilt with our premium 68 Degree Turbo Pipe, designed to...01-08142560- SKU:
- 01-08142560
- Truck Class:
- Heavy Duty
- Make:
- Peterbilt
- Diameter Options:
- 6 Inch
- Style Options:
- Elbow
- Material Options:
- Aluminized Steel
- Degree Options:
- 68
- Product Type:
- Exhaust
- Ready To Ship:
- Yes
$92.99Qty in Cart: 0Price:$92.99Subtotal: -
Cummins N14 Engine 3 Piece Exhaust Manifold Kit - Replaces 3062568, 3065022 & 3065024 By BESTfit
BESTFIT TRUCK PARTS
$467.99BESTfit 3 Piece Exhaust Manifold Kit For Cummins N14 1995 & OlderIntroducing BESTfit CHROME EXHAUST KITS! These Kits Are Installer-Friendly, Produced With All High Quality Components, Offer The Best...29-073062568- SKU:
- 29-073062568
- Truck Class:
- Heavy Duty
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$467.99Qty in Cart: 0Price:$467.99Subtotal: -
FREE SHIPPING OVER $249
Stainless Steel Control Plate A/C Heater For Peterbilt
ROCKWOOD
$26.25SS AC/Heat Control Trim Panel Fits PeterbiltLabel your Peterbilt A/C and heat controls with this high quality ID plate. It is made of stainless steel and engraved with an easy to read font. The plate...PT256ACH- SKU:
- PT256ACH
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Product Type:
- Interior
- Ready To Ship:
- Yes
$26.25Qty in Cart: 0Price:$26.25Subtotal: -
Jones Performance Fiberglass Hood W/ 59 Inch Centerline & Fenders, Replaces K146-1231 For Kenworth T600 Aerocab
JONES PERFORMANCE
$2,891.99Fiberglass Hood W/ 59 Inch Centerline & Fenders By Jones Performance Replaces K146-1231 Fits Kenworth T600 AerocabReplace An OEM K146-1231 Factory Style Hood With This Top Quality Jones Performance...02-12560- SKU:
- 02-12560
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Length Options:
- 59 Inch
- Material Options:
- Fiberglass
- Make:
- Kenworth
- Finish Options:
- Paintable
- Product Type:
- Hood Shell
- Ready To Ship:
- Yes
$2,891.99Qty in Cart: 0Price:$2,891.99Subtotal: -
BESTfit Fiberglass Hood W/ 56.75 Inch Centerline & Fenders For International 5900 & 9900I Replaces 3552477C96
BESTFIT TRUCK PARTS
$2,582.99Fiberglass Hood W/ 56.75 Inch Centerline & Fenders By BESTfit Replaces 3552477C96 Fits International 5900 & 9900IThe BESTfit Fiberglass Hood is a high-quality replacement for International 5900 &...07-12567- SKU:
- 07-12567
- Truck Class:
- Heavy Duty
- Style Options:
- Set Forward Axle
- Material Options:
- Fiberglass
- Finish Options:
- Paintable
- Make:
- International
- Length Options:
- 120 BBC
- Product Type:
- Hood Shell
- Ready To Ship:
- Yes
$2,582.99Qty in Cart: 0Price:$2,582.99Subtotal: -
BESTfit Fiberglass Hood W/ 56.75 Inch Centerline & Fenders For International 5900 & 9900I Replaces 3531924C91, 3552478C96
BESTFIT TRUCK PARTS
$2,514.99Fiberglass Hood W/ 56.75 Inch Centerline & Fenders By BESTfit Replaces 3531924C91, 3552478C96 Fits International 5900 & 9900IAre you looking for the most cost effective hood for your International...07-12568- SKU:
- 07-12568
- Truck Class:
- Heavy Duty
- Style Options:
- Set Forward Axle
- Material Options:
- Fiberglass
- Finish Options:
- Paintable
- Make:
- International
- Length Options:
- 120 BBC
- Product Type:
- Hood Shell
- Ready To Ship:
- Yes
$2,514.99Qty in Cart: 0Price:$2,514.99Subtotal: -
Jones Performance Fiberglass Hood W/ 58.5 Inch Centerline & Fenders For International 5900I / 9900I SFA 120 BBC Replaces 3524263C91, 3531917C91, 3552477C96
JONES PERFORMANCE
$2,949.99Fiberglass Hood W/ 58.5 Inch Centerline & Fenders By Jones Performance Replaces 3524263C91, 3531917C91, 3552477C96 Fits International 5900I / 9900I SFA 120 BBCIs it time to replace your hood for a...07-12563- SKU:
- 07-12563
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Fiberglass
- Finish Options:
- Paintable
- Make:
- International
- Length Options:
- 120 BBC
- Product Type:
- Hood Shell
$2,949.99Qty in Cart: 0Price:$2,949.99Subtotal: -
Jones Performance Fiberglass W/ 58.5 Inch Centerline & Fenders For International 5900I/9900I Replaces OE 3531924C91, 3557798C91, 3557798C92
JONES PERFORMANCE
$2,979.99Fiberglass W/ 58.5 Inch Centerline & Fenders By Jones Performance Replaces OE 3531924C91, 3557798C91, 3557798C92 Fits International 5900I/9900IJones Performance is a reputable manufacturer that...07-12564- SKU:
- 07-12564
- Truck Class:
- Heavy Duty
- Material Options:
- Fiberglass
- Finish Options:
- Paintable
- Make:
- International
- Length Options:
- 120 BBC
- Product Type:
- Hood Shell
- Ready To Ship:
- Yes
$2,979.99Qty in Cart: 0Price:$2,979.99Subtotal: -
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
32 Inch Fan Blade, 2.56 Inch Pilot Hole Replaces 3520182C1, 3625639C1, 05-19754-256
AUTOMANN USA
$164.996 Bolt Mounting Clockwise Rotation Fan BladeThis professional-grade 9-blade fan assembly delivers powerful airflow with precision engineering. Crafted for clockwise rotation and industrial...29-0706005- SKU:
- 29-0706005
- Truck Class:
- Heavy Duty
- Make:
- Peterbilt
- Product Type:
- Engine Parts
$164.99Qty in Cart: 0Price:$164.99Subtotal: -
4 Inch Stainless Extended Cab Panels W/ 16 Amber/Clear 3/4 Inch Round LED Lights For Peterbilt 389 131 BBC
PHOENIX DESIGN
$406.994 Inch Driver, 1.31 Inch Passenger X 54 Inch Stainless Steel Extended Cab Panels Fits Peterbilt 389 131 BBCMake your Peterbilt 389 131 BBC shine with the 4 Inch Stainless Extended Cab Panels,...01-091200256- SKU:
- 01-091200256
- Light Options:
- With Lights
- Location:
- Made In USA
- Truck Class:
- Heavy Duty
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Finish Options:
- Paintable
- Length Options:
- 54 Inch
- Product Type:
- Exterior
$406.99Qty in Cart: 0Price:$406.99Subtotal: -
3 Inch Stainless Steel Standard Cab Panels W/ 6 P1 Amber/Amber LEDs For Peterbilt 388, 389
PHOENIX DESIGN
$224.993 Inch Stainless Steel Standard Cab Panels W/ 6 P1 Amber LED Amber Lens Lights Fit Peterbilt 388 & 389* High Quality Cab Panel* Made Of 304 Stainless Steel* 3 Inch* Extended* 3 P1 Lights Per Side *...01-091201256- SKU:
- 01-091201256
- Light Options:
- With Lights
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Stainless Steel
- Make:
- Peterbilt
- Finish Options:
- Polished
- Length Options:
- 39 Inch
- Product Type:
- Exterior
$224.99Qty in Cart: 0Price:$224.99Subtotal: -
Jones Performance Fiberglass Hood W/ 66 Inch Centerline & Fenders For Kenworth W900L Replaces L29-1003-010002, L29-1017-01000
JONES PERFORMANCE
$3,989.99Fiberglass Hood W/ 66 Inch Centerline & Fenders By Jones Performance Replaces L29-1003-010002, L29-1017-01000 FitsAt 4 State Trucks We Offer Jones Performance Fiberglass Hood For Kenworth W900L...02-12565- SKU:
- 02-12565
- Length Options:
- 66 Inch
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Fiberglass
- Make:
- Kenworth
- Finish Options:
- Paintable
- Product Type:
- Hood Shell
$3,989.99Qty in Cart: 0Price:$3,989.99Subtotal: -
Jones Performance Fiberglass Hood W/ 52 Inch Centerline & Fenders For Mack CHN 613 SFA Models Replaces 25134067, 1QM-5927M
JONES PERFORMANCE
$2,749.99Fiberglass Hood W/ 52 Inch Centerline & Fenders By Jones Performance Replaces 25134067, 1QM-5927M Fits Mack CHN 613 SFA ModelsEquip your Mack CHN 613 SFA with this premium Jones Performance...11-12560- SKU:
- 11-12560
- Truck Class:
- Heavy Duty
- Material Options:
- Fiberglass
- Make:
- Mack
- Finish Options:
- Paintable
- Length Options:
- 52 Inch
- Product Type:
- Hood Shell
$2,749.99Qty in Cart: 0Price:$2,749.99Subtotal: -
Go Rhino Textured Black RB10 Running Boards W/ Mounting Bracket & 2 Pairs Of Drop Steps For Toyota 4Runner SR5 Sport
GO RHINO
$1,254.99Textured Black Off-Road Style 6 Inch Wide Steel Steps* High Quality Running Boards* 2 Pairs Of Drop Steps* Made Of Galvanized Steel* Includes Mounting Brackets For A Simple- No Drill Installation*...6344256820PC- SKU:
- 6344256820PC
- Color:
- Black
- Truck Class:
- Light Duty
- Material Options:
- Steel
- Make:
- Toyota
- Finish Options:
- Galvanized
- Product Type:
- Frame & Chassis
$1,254.99Qty in Cart: 0Price:$1,254.99Subtotal: -
Go Rhino Black RB10 Running Boards W/ Mounting Bracket & 2 Pairs Of Drop Steps For Toyota 4Runner SR5 Sport
GO RHINO
$1,551.99Off-Road Style 6 Inch Wide Steel Steps W/ Black Bedliner Coating* High Quality Running Boards* 2 Pairs Of Drop Steps* Made Of Galvanized Steel* Includes Mounting Brackets For A Simple- No Drill...6344256820T- SKU:
- 6344256820T
- Color:
- Black
- Truck Class:
- Light Duty
- Material Options:
- Steel
- Make:
- Toyota
- Finish Options:
- Galvanized
- Product Type:
- Frame & Chassis
$1,551.99Qty in Cart: 0Price:$1,551.99Subtotal: -
TPHD Fiberglass Hood Shell W/ 55.75 Centerline For Peterbilt 377 SBA Replace 13-04230UNF, 13-04231, 13-04564A101
TPHD
$2,275.99Fiberglass Hood Shell W/ 55.75 Centerline By TPHD Replace 13-04230UNF, 13-04231, 13-04564A101 Fits Peterbilt 377 SBA* High Quality Hood Shell * 55.75 Inch Center Line* Paintable * Set Back Axle *...01-12561- SKU:
- 01-12561
- Material Options:
- Fiberglass
- Finish Options:
- Paintable
- Length Options:
- 120 BBC
- Truck Class:
- Heavy Duty
- Make:
- Peterbilt
- Product Type:
- Hood Shell
$2,275.99Qty in Cart: 0Price:$2,275.99Subtotal: -
Rosewood Fan Control Dashboard Knob W/ Green Iron Cross
GRAND GENERAL
$30.91Rosewood Fan Control Dashboard Knob W/ Green Iron Cross* High Quality Dashboard Knob* Rosewood* With Green Iron Cross * Stainless Steel Fan Script* Sold Individually* Warranty On Dashboard Knobs...09-15010256- SKU:
- 09-15010256
- Material Options:
- Stainless Steel
- Color:
- Green
- Truck Class:
- Heavy Duty
- Product Type:
- Interior
- Make:
- Universal Items
$30.91Qty in Cart: 0Price:$30.91Subtotal: