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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
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
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
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
7 Best Exterior Chrome Upgrades for the Kenworth W900A(Post)Outfit your Kenworth W900A model with stunning exterior chrome accessories and stainless-steel upgrades that seamlessly tie together the entire truck’s theme. Classic big rig owners take a lot of prid
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
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1-Piece Stainless Steel Diesel Particulate Filter Replaces 23535827, E23535827 For Detroit S-50 Engine
GLOBAL EMISSIONS
$2,246.991-Piece Stainless Steel Diesel Particulate Filter Fits Detroit S-50 Engine* High Quality Diesel Particulate Filter* Made Of Stainless Steel * Exclusive 1-Piece Canister Design For Durability* OEM...29-080600036- SKU:
- 29-080600036
- Truck Class:
- Heavy Duty
- Style Options:
- Detroit
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Product Type:
- Exhaust
$2,246.99Qty in Cart: 0Price:$2,246.99Subtotal: -
High Flow Performance Air Filter With Washable Element Media For Freightliner Cascadia 116/126
FLEET FILTERS
$585.99High Performance Air Filter Media, Replaces FA6102You never need to waste money on paper filters again! 4 State Trucks proudly offers Fleet Air Filters, the only lifetime, washable, high flow, air...29-071300036- SKU:
- 29-071300036
- Truck Class:
- Heavy Duty
- Make:
- Freightliner
- Product Type:
- Engine Parts
$585.99Qty in Cart: 0Price:$585.99Subtotal: -
FASS Billet Aluminum Fuel Filter Cap For Duramax 6.6L Engine 2017-2024
FASS
$120.99Billet Aluminum Fuel Filter Cap For Duramax 6.6L EngineBuilt for strength and convenience, the FASS Billet Aluminum Fuel Filter Cap for 2017-2024 GM 6.6L Duramax L5P engines is a premium upgrade over...12-07030036- SKU:
- 12-07030036
- Material Options:
- Billet Aluminum
- Style Options:
- Duramax
- Product Type:
- Engine Parts
- Make:
- Chevrolet
$120.99Qty in Cart: 0Price:$120.99Subtotal: -
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: -
FREE SHIPPING OVER $249
D2 Air Governor Replaces 800361, 800361N, 5010669, 5010669N
AUTOMANN USA
$37.08D2 Air GovernorMaximize air system efficiency with this D2 Air Governor, compatible with AD-IS dryers and OEM numbers 800361, 800361N, 5010669, and 5010669N. Featuring a 105 PSI cut-in and 125 PSI...800361- SKU:
- 800361
- Truck Class:
- Heavy Duty
- Make:
- Universal Items
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$37.08Qty in Cart: 0Price:$37.08Subtotal: -
BESTfit Oil Pan For Cummins ISB Engines With Front Or Rear Sump - Replaces 4898036 & 4898037
BESTFIT TRUCK PARTS
$149.99BESTfit Oil Pan With Front Or Rear Sump Mounting Cummins ISB Series Diesel Engine Trucks* High Quality Oil Pan* For Cummins ISB Engines* Stamped Steel* Fit- Both Front And Rear Sump* Pairs With...29-074898036- SKU:
- 29-074898036
- Truck Class:
- Heavy Duty
- Material Options:
- Steel
- Product Type:
- Engine Parts
- Ready To Ship:
- Yes
$149.99Qty in Cart: 0Price:$149.99Subtotal: -
BESTfit Stud Mount Blower Motor Replaces OE 2809-540-036 For Peterbilt 330, 375, 377, 378, 379, 385
BESTFIT TRUCK PARTS
$103.99BESTfit 1 Speed 12V Vented Blower Motor Fits Peterbilt* High Quality Stud Mount Blower Motor* 12 Volts* 4.59 Inch Length OA Body* Wire Type 2 Wire Harness* 3 Inch Motor Diameter* 3.84 Motor Length*...01-150300002- SKU:
- 01-150300002
- Diameter Options:
- 3 Inch
- Truck Class:
- Heavy Duty
- Length Options:
- 3 Inch
- Make:
- Peterbilt
- Product Type:
- Interior
$103.99Qty in Cart: 0Price:$103.99Subtotal: -
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: -
On SaleLimited Quantity Available
Mini Long 10 Diode Marker Light - Red
OPTRONICS
Now: $3.15Was: $4.50Mini Long 10 Diode Marker Light - Red* High Quality LED Light* Marker Function* 10 Diodes* Red LED* Sold Individually* Warranty On LED Lights Against Defects In Workmanship & Material From Date Of...09-1601060369- SKU:
- 09-1601060369
- Truck Class:
- Heavy Duty
- Product Type:
- Lighting
- Make:
- Universal Items
- Ready To Ship:
- Yes
Now: $3.15Was: $4.50Qty in Cart: 0Price:Now: $3.15Was: $4.50Subtotal: -
BESTfit Detroit Diesel DPF For Detroit DD13/DD15 Engines Replaces 52967, 7700656, C029SA
BESTFIT TRUCK PARTS
$3,219.99Diesel Diesel Particulate Filter By BESTfit Replaces 52967, 7700656, C029SA Fits Detroit DD13/DD15 EnginesBuilt for performance and durability, the BESTfit Detroit Diesel DPF replaces OEM part...29-08090036- SKU:
- 29-08090036
- Style Options:
- Detroit
- Product Type:
- Exhaust
- Make:
- Universal Items
$3,219.99Qty in Cart: 0Price:$3,219.99Subtotal: -
BESTfit Cummins NT855 Flywheel Housing
BESTFIT TRUCK PARTS
$1,013.99BESTfit Flywheel HousingThis high quality flywheel housing for the Cummins NT855 engine is drilled for both straight up and tilted engine and for the electronic tachometer. The flywheel has a small...09-073036011- SKU:
- 09-073036011
- Truck Class:
- Universal
- Material Options:
- Aluminum
- Make:
- Universal Items
- Product Type:
- Engine Parts
- Style Options:
- Cummins
$1,013.99Qty in Cart: 0Price:$1,013.99Subtotal: -
FREE SHIPPING OVER $249
BESTfit 4 ID X 36 Inch Turn Out Chrome Top Stack- Replaces 04-16677-032 For Freightliner M2-106, M2-112
BESTFIT TRUCK PARTS
$174.99BESTfit 36 Inch Chrome-Plated Steel Turn Out Exhaust Stack W/ 4 Inch I.D.* High Quality Top Stack* Made Of Chrome-Plated Steel* 4 Inch I.D. x 36 Inch* Sold Individually* Warranty On Top Stacks...09-084036182- SKU:
- 09-084036182
- Diameter Options:
- 4 Inch
- Truck Class:
- Heavy Duty
- Length Options:
- 36 Inch
- Style Options:
- Short 30 Turn
- Material Options:
- Steel
- Make:
- Freightliner
- Finish Options:
- Chrome-Plated
- Product Type:
- Exhaust
$174.99Qty in Cart: 0Price:$174.99Subtotal: -
4 Inch Round Combination Stop/Turn/Tail/Backup Light
BUYERS PRODUCTS
$18.344 Inch Round Red LED Stop, Turn & Tail Lights* High Quality Combination Light* Color Red And Clear* Dimension - 4.33 Height - 4.33 Length* PL-3 Connection For Stop-Turn-Tail* PL-2 Connection For...09-160100036- SKU:
- 09-160100036
- Diameter Options:
- 4 Inch
- Truck Class:
- Universal
- Color:
- Red
- Make:
- Universal Items
- Material Options:
- Plastic/Poly
- Product Type:
- Lighting
$18.34Qty in Cart: 0Price:$18.34Subtotal: -
2 Prong Light Wire Harness With 10 Inch Leads - Sold Per Plug
GRAND GENERAL
$1.99Continuous 2-Prong Light Plug Wire Harness - Sold Per Plug* High Quality Wire* 10 Inch* 2 Prong* Made In USA* Sold Individually* Warranty On Wires Against Defects In Workmanship & Material From Date...09-160200365- SKU:
- 09-160200365
- Truck Class:
- Universal
- Make:
- Universal Items
- Style Options:
- 2 Prong
- Size Options:
- 18 Gauge
- Product Type:
- Electronics
- Ready To Ship:
- Yes
$1.99Qty in Cart: 0Price:$1.99Subtotal: -
12 Gauge Customs 10 Inch Stainless Steel Drop Visor For Kenworth T600, T800, W900B/L
TWELVE GAUGE
$509.9910 Inch Stainless Steel Drop Visor By 12 Gauge Customs Fits Kenworth T600, T800, W900B/LThis high quality stainless steel 10 inch drop visor that fits Kenworth models with a curved windshield is a...02-0900367- SKU:
- 02-0900367
- Truck Class:
- Heavy Duty
- Make:
- Kenworth
- Material Options:
- Stainless Steel
- Light Options:
- Without Lights
- Product Type:
- Exterior
- Cab Style:
- Curved Windshield
- Ready To Ship:
- Yes
$509.99Qty in Cart: 0Price:$509.99Subtotal: -
On SaleLimited Quantity Available
Blue Vinyl Spade Terminals W/ Size 8 - 10 Stud
GROTE
Now: $1.81Was: $3.1916-14 Gauge Blue Vinyl Spade Terminals, 15 packThe Blue Vinyl Spade Terminals are designed for use with 16-14 gauge wire. They have a continuous operating temperature of 167 degrees Fahrenheit,...09-161302036- SKU:
- 09-161302036
- Color:
- Blue
- Truck Class:
- Universal
- Material Options:
- Vinyl
- Make:
- Universal Items
- Product Type:
- Air, Electrical, & Safety
- Ready To Ship:
- Yes
Now: $1.81Was: $3.19Qty in Cart: 0Price:Now: $1.81Was: $3.19Subtotal: -
2 X 6 Inch Marker Light 10 Diode - Red LED / Red Lens
AFTERMARKET
$12.632 X 6 Inch Red Marker Light With Red Lens* High Quality LED Light* 2 Inch X 6 Inch* 10 Diodes* Marker Function* Red LED/ Red Lens* Sold Individually* Warranty On LED Lights Against Defects In...09-1601060361- SKU:
- 09-1601060361
- Truck Class:
- Heavy Duty
- Product Type:
- Lighting
- Make:
- Universal Items
- Ready To Ship:
- Yes
$12.63Qty in Cart: 0Price:$12.63Subtotal: -
Merritt Dyna Light Cab Rack
MERRITT
$5,935.99Cab Rack W/ Jail Bar Window, Curb Side Chain Rack & TrayThe Merritt 68 x 80 Inch Dyna Light Cab Rack combines durability, organization, and professional design to meet the needs of truck drivers...Q3203670019C- SKU:
- Q3203670019C
- Truck Class:
- Heavy Duty
- Location:
- Made In USA
- Material Options:
- Aluminum
- Make:
- Universal Items
- Product Type:
- Cargo Control
- Width Options:
- 80 Inch
- Height Options:
- 68 Inch
$5,935.99Qty in Cart: 0Price:$5,935.99Subtotal: -
Merritt Aluminum Cab Rack W/ Lights 68 X 80 Inch
MERRITT
$9,018.99Aluminum Cab Rack W/ 14 Inch Deep 3 Door Enclosure & Jail Bar WindowThe Merritt 68 x 80 Inch Cab Rack is the ultimate upgrade for drivers seeking security, utility, and a professional look. With a...320367117C- SKU:
- 320367117C
- Product Type:
- Cargo Control
- Make:
- Universal Items
$9,018.99Qty in Cart: 0Price:$9,018.99Subtotal: -
7 OD X 36 Inch Miter Chrome Top Stack By BESTfit
BESTFIT TRUCK PARTS
$361.997 O.D. X 36 Miter Chrome Top Stack BESTfit* High Quality Stack* Chrome-Plated Steel* 7 Inch OD* 36 Inch Overall Height* Miter Cut Top Style* Sold Individually * Warranty On Stacks Against Defects In...09-08703601- SKU:
- 09-08703601
- Diameter Options:
- 7 Inch
- Height Options:
- 36 Inch
- Truck Class:
- Universal
- Style Options:
- Miter Cut
- Material Options:
- Steel
- Make:
- Universal Items
- Finish Options:
- Chrome-Plated
- Product Type:
- Exhaust
$361.99Qty in Cart: 0Price:$361.99Subtotal: