Peterbilt 579

Peterbilt Model 579 on-highway tractor, 124 in BBC set-back front axle (579-124 SBFA), from the Peterbilt 2024 HD Body Builder Manual Rev A (May 2024) overall-dimensions drawing and the peterbilt.com 579 page; North American truck, not a Gulf-spec variant. 118 in BBC (579-118 SBFA) is also offered.

USA

power: 605 hp
torque: 2,050 lb-ft

Side

Front

Bumper to back of cab (BBC): 124 in
Front overhang: 48.6 in
Front of frame to front axle: 31.3 in
Front axle to back of cab: 74.1 in
Cab roof height above frame: 80.8 in
Width over mirrors: 120.6 in

Dimensions

Cab floor height above frame (From bottom of frame rail): 16 in
Overall width (Top view, excluding mirrors): 94 in
Bumper to back of cab (118 in BBC variant) (579-118 SBFA): 118 in
Front axle to back of cab (118 in BBC variant) (579-118 SBFA; FAX to BOC): 68.2 in
Sleeper roof height above frame (44 in low roof): 83.7 in
Sleeper roof height above frame (58 in low roof): 85.5 in
Sleeper roof height above frame (58 in high roof): 101.8 in
Sleeper roof height above frame (72 in high roof): 101.8 in
Sleeper roof height above frame (80 in high roof): 103.8 in
Sleeper length (44 in sleeper): 36.0 in
Sleeper length (58 in sleeper): 48.0 in
Sleeper length (72 in sleeper): 63.0 in
Sleeper length (80 in sleeper): 69.0 in
Cab-to-sleeper opening height (low roof) (Dimension A, walkthrough opening): 49.0 in
Cab-to-sleeper opening width (low roof) (Dimension B, walkthrough opening): 68.1 in
Cab-to-sleeper opening height (high roof) (Dimension A, walkthrough opening): 66.5 in
Cab-to-sleeper opening width (high roof) (Dimension B, walkthrough opening): 68.1 in
Sleeper headroom (80 in UltraLoft): 8 ft
Sleeper storage volume (80 in UltraLoft): 70 cu ft

Weight

Front axle capacity: 14,600 lb
Rear axle capacity: 46,000 lb
Front axle capacity (minimum option): 12,000 lb
Rear axle capacity (minimum option): 21,000 lb
Rear tandem axle rating (PACCAR DX-40) (Tandem GAWR): 40,000 lb
Max gross combination weight (PACCAR DX-40 axle) (Axle GCW limit): 80,000 lb
Max operating weight (PACCAR MX-13 engine): 140,000 lb
Max operating weight (PACCAR MX-11 engine) (Engine maximum operating weight): 110,000 lb
Max gross combination weight (PACCAR TX-12 transmission) (Standard TX-12 limit): 110,000 lb
Max gross combination weight (PACCAR TX-12 PRO transmission): 70,000 lb
Max operating weight (PACCAR TX-18 transmission): 140,000 lb
Engine dry weight (PACCAR MX-13): 2,500 lb
Engine dry weight (PACCAR MX-11): 2,200 lb

Engine

Engine model: PACCAR MX-13, PACCAR MX-11, Cummins X15, Cummins X15N, Cummins ISX12N, Cummins L9N
Gross power (Cummins X15, top rating): 605 hp
Max torque (Cummins X15, top rating): 2,050 lb-ft
Displacement (PACCAR MX-13): 3.4 US gal
Power (PACCAR MX-13): 510 hp
Torque (PACCAR MX-13): 1,850 lb-ft
Displacement (PACCAR MX-11): 2.9 US gal
Power (PACCAR MX-11): 445 hp
Torque (PACCAR MX-11): 1,700 lb-ft
Displacement (Cummins X15): 4 US gal
Displacement (Cummins X15N): 3.8 US gal
Power (Cummins X15N) (Maximum rating, up to 500 hp): 500 hp
Torque (Cummins X15N) (Maximum rating, up to 1,850 lb-ft): 1,850 lb-ft
Displacement (Cummins ISX12N): 3.1 US gal
Power (Cummins ISX12N) (Maximum rating, up to 400 hp): 400 hp
Torque (Cummins ISX12N) (Maximum rating, up to 1,450 lb-ft): 1,450 lb-ft
Displacement (Cummins L9N): 2.4 US gal
Power (Cummins L9N) (Single rating): 320 hp
Torque (Cummins L9N) (Single rating): 1,000 lb-ft

Transmission

Transmission: PACCAR TX-12 PRO automated (engines up to 1,000 lb-ft, GCWR up to 70,000 lb)
Sleeper options: 44 in to 80 in; 80 in UltraLoft
Transmission (PACCAR TX-12): 12-speed automated, on-highway fuel efficiency; 2 reverse; max engine 510 hp / 1,850 lb-ft; max GCWR 110,000 lb; system weight 657 lb (298 kg)
Transmission (PACCAR TX-12 PRO): 12-speed automated, extreme-duty clutch; max engine 455 hp / 1,700 lb-ft; max GCWR 70,000 lb; system weight 665 lb (302 kg)
Transmission (PACCAR TX-18): 18-speed automated, vocational / heavy haul; max engine 510 hp / 1,850 lb-ft; max operating weight 140,000 lb; system weight 808 lb (367 kg)
Transmission (Endurant HD): 12-speed automated, on-highway fuel efficiency
Transmission (Endurant XD): 18-speed automated, vocational, heavy haul, high performance
Transmission (Eaton FR/RT): Manual; 9, 10, 11, 13, 15 or 18 speeds
Transmission (Eaton UltraShift PLUS): Automated; 10, 11, 13 or 18 speeds
Drive axle ratio range (PACCAR DX-40): 2.47 to 3.70; 1,650 lb-ft straight torque rating, 1,850 lb-ft multi-torque rating

Capacities

Fuel tank: 150 US gal
Fuel tank (smallest option): 40 US gal
Fuel tank diameters: 20 in, 23 in or 26 in
DEF tank (small): 10.2 US gal
DEF tank (medium): 16.1 US gal
DEF tank (large): 20.1 US gal
DEF tank (medium aero): 13.9 US gal
DEF tank (large aero): 17.9 US gal

Service intervals

Engine oil and filter: 75,000 miles
Fifth wheel (or monthly: inspect, grease): 15,000 miles
Axle and gearbox first-fill oil: first change at 3,000-5,000 mi (4,800-8,000 km); level check every 15,000 mi (24,000 km)