2021 Peterbilt 579

$54,500

UsedClass 8Day Cab

Jacksonville, FL

Miles

498,357 mi

Year

2021

Engine

Cummins X15

Horsepower

400 HP

Transmission

Automated Manual

Axle Config

6x4

Description

Clean and ready to work, this 2021 Peterbilt 579 Day Cab is a dependable choice for any operation. Powered by a Cummins engine and paired with a 12-speed Endurant transmission, it delivers both performance and efficiency. Built on Low Air Leaf suspension, it provides a smooth, stable ride for daily use. This truck has been fully serviced, receiving a PM service along with an 86-point inspection and DOT certification, ensuring it’s road-ready. With 498,361 miles, all new tires, it’s a solid, well-maintained unit that’s ready to go to work today. Se habla espanol

Specifications

Engine

Make: Cummins
Model: X15
HP: 400
Displacement: 15L
Fuel: Diesel

Drivetrain

Transmission: Automated Manual

Dealer

Rush Truck Centers

Jacksonville, FL

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2021 Peterbilt 579

$54,500

UsedClass 8Day Cab

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Jacksonville, FL

Chassis

Wheelbase: 185"
Cab Type: Conventional
GVWR: 53,200 lbs
Front Axle: 13,200 lbs
Rear Axle: 40,000 lbs
5th Wheel Type: Jost JSK36

Equipment

Wheels: Aluminum

Details

Mileage: 498,357 mi
Body Type: Truck-Tractor

VIN

1XPBD49X7MD738847

NHTSA Verified

Stock #

rush-591617

Dealer

Rush Truck Centers

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Market Index

2021 Peterbilt 579 X15

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Median Price

$59,439

This listing

8% below market median

Active listings

265

Specifications

Engine

Make: Cummins
Model: X15
HP: 400
Displacement: 15L
Fuel: Diesel

Drivetrain

Transmission: Automated Manual
Trans. Make: Eaton
Speeds: 12
Axle Config: 6x4
Rear Ratio: 2.79

Chassis

Wheelbase: 185"
Cab Type: Conventional
GVWR: 53,200 lbs
Front Axle: 13,200 lbs
Rear Axle: 40,000 lbs
5th Wheel Type: Jost JSK36

Equipment

Wheels: Aluminum

Details

Mileage: 498,357 mi
Body Type: Truck-Tractor

Description

Finance calculator

2021 Peterbilt 579 · 498,357 mi

Est. monthly

$1,040.64

Vehicle price

Pre-tax purchase price

Term (months)

Down payment (10%)

$5,450

Owner-ops: 10–20% typical

APR (9.50%)

Prime 7–9% · Median 9–12% · Subprime 14%+

Trade-in value

Deducted from financed amount

Condition

Drives Federal Excise Tax (FET)

Federal Excise Tax (FET)

FET applies$0

Skip if straight truck under 33k GVWR or trailer under 26k GVWR.

Off — used vehicles are exempt

Sales tax (0.00%)

Often 0% for interstate commercial use

Doc fee

Some states cap (CA $85, NY $75)

Title + registration

State title + lien fee

Balloon payment at end

Lowers monthly; paid as lump at term

Apply Section 179 first-year deduction

Heavy trucks (GVWR > 14,000 lbs) qualify for full deduction up to $1,220,000 in 2026. Assumes purchase in service this tax year. Consult a CPA.

Amount financed

$49,550

Total interest

$12,889

Total cost

$67,889

Effective / month

$1,040.64

Estimate only. Actual financing depends on credit, dealer program, and lender terms. Heavy-truck APRs typically range 7–18% depending on credit tier, vehicle age, and LTV. Interstate commercial-use purchases are often exempt from state sales tax. TruckRadar is not a lender. Consult a commercial-vehicle lender for binding quotes.