Description
**2021 Peterbilt 579 Day Cab – 430HP MX-11 – 12-Speed AMT (Autoshift) – Single Axle**
Located in **Porterville, CA**, this **2021 Peterbilt Motors Company 579** day cab is a single-axle, regional workhorse. Finished in **white** with a **Prestige Sterling Grey interior**, it combines reliability with driver comfort.
This truck is powered by a **Paccar MX-11 diesel engine (430 HP, Engine Serial: X017614)** paired with a **12-speed PACCAR PO-xxF112C Automated Manual Transmission (Autoshift)**. Its **2.93 rear end ratio** and **156” wheelbase** provide stability and control for single-axle hauling.
Interestingly, the odometer reads **276,957 miles**, but the ECM shows only **74 miles** and **5 engine hours**, suggesting either a reset or replacement of the engine/ECM. This makes it a unique case in terms of service history.
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### Key Specifications:
* **Engine:** Paccar MX-11 – 430 HP
* **Transmission:** 12-Speed AMT Autoshift
* **Axle Configuration:** Single
* **Front Axle Capacity:** 12,350 lbs
* **Rear Axle Capacity:** 21,000 lbs
* **GVWR:** 33,350 lbs
* **Rear End Ratio:** 2.93
* **Wheelbase:** 156”
* **Suspension:** Peterbilt Air Trac Air Ride
* **Brakes:** Air
* **Fuel Capacity:** Dual 50-gallon aluminum tanks
* **EPA Year:** 2020
* **5th Wheel:** Stationary
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### Exterior & Equipment:
* Aluminum Front & Rear Wheels
* Front/Rear Tires: 275/80R22.5 & 295/75R22.5
* Chrome Bumper & Chrome Exhaust
* Stainless Steel Outside Sunvisor
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### Interior & Driver Comfort:
* Prestige Sterling Grey Interior
* Air Conditioning
* Tilt/Telescopic Steering Wheel
* Power Steering, Windows, and Door Locks
* Dual High-Back Seats
* Airride Passenger Seat
* Heated Mirrors
* Cruise Control
* CB Radio / AM/FM Radio
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**VIN:** 1XPBAK8X6MD762376
**Stock #:** U2303 / 762376
This 2021 Peterbilt 579 is a single-axle day cab with full driver comfort features, a reliable MX-11 engine, and an unusual low ECM mileage, making it an interesting option for regional or local operations.Specifications
Year2021
ManufacturerPETERBILT
Model579
Mileage276,955 mi
VIN1XPBAK8X6MD762376
ConditionUsed
Stock NumberU2303
DOTYes
Engine ManufacturerPACCAR
Engine ModelMX-11
Engine Displacement11 l
Fuel TypeDiesel
Drive4x2
Number of Rear AxlesSingle
Gross Vehicle Weight RatingClass 8: 33,001 pounds or greater
Drive SideLeft Hand Drive
Year2021|
ManufacturerPETERBILT|
Model579|
Mileage276,955 mi|
VIN1XPBAK8X6MD762376|
ConditionUsed|
Stock NumberU2303|
DOTYes|
Engine ManufacturerPACCAR|
Engine ModelMX-11|
Engine Displacement11 l|
Fuel TypeDiesel|
Drive4x2|
Number of Rear AxlesSingle|
Gross Vehicle Weight RatingClass 8: 33,001 pounds or greater|
Drive SideLeft Hand Drive|
