Overview

Overview
This new 2026 Peterbilt 589 Traditional sleeper tractor is spec’d for logging service, set up to pull a 53' chip trailer. It is built on a 260" wheelbase with a 58" low roof sleeper, rated for 120,000 lbs GCW, and designed for 100% highway operation with a maximum grade rating of 6%.

Engine & Drivetrain
Powered by a Cummins X15 Production Series engine rated at 565 HP at 1,950 RPM (governed at 2,000 RPM) with 1,850 lb-ft of torque at 1,000 RPM. It is a model year 2025 engine with 2024 series emissions. The powertrain is optimized for performance in vocational and heavy GCWR applications, with a typical operating speed of 75 MPH, an effective vehicle speed limiter setting of 65 MPH or greater, and a predictive cruise control package. Engine braking is provided by Intebrake, with controls on the right-hand steering column. The engine is equipped with a PACCAR 160-amp brushed alternator, PACCAR 12V starter, four PACCAR Premium 12V dual-purpose batteries totaling 2,920 CCA, a battery jumper terminal, a low voltage disconnect system, a 110–120V immersion block heater, a 2-speed fan clutch, an 18.7 CFM naturally aspirated air compressor, and a high efficiency cooling system. Fuel system features include a PACCAR fuel/water separator with extended service interval and 12V fuel filter heat. Engine protection shutdown, a configurable idle shutdown timer, and EPA engine idling compliance are included, along with a steel front engine support. Twin 15" premium stainless steel cowl-mounted air cleaners with slotted caps feed the engine. Exhaust is a dual system with a single-module DPF/SCR mounted under the right-hand side of the cab, finished with 42" tall, 7" chrome-plated standpipes with 45-degree curved tips and a half-round stainless steel muffler guard.

The transmission is an Eaton Fuller RTLO20918B 18-speed manual with an oil-to-water cooler and chrome shifter, paired with a self-adjusting, pre-damped clutch and a remote release bearing lube hose mounted under the hood. Driveline components include an RPL25 SD main driveline with one midship bearing and an RPL20 interaxle driveline.

Chassis & Axles
The frame uses 10-3/4" steel rails at 3/8" thickness running to 354", with zinc-coated anti-corrosion treatment, aluminum crossmembers, and bolted frame components. The end of frame is tapered with a crossmember, kingpin cutout, and standard A-brace, plus a Holland PH-30-RP-41 hitch. Chassis measurements are 99.9" front axle to back of cab, 160.1" cab to axle, and 221.1" cab to end of frame.

The front axle is a Meritor MFS+14F rated at 14,600 lbs with a 3.5" drop and wide track, riding on taper leaf springs with Tenneco shocks, greasable spring pins, and TRW TAS85 power steering with a frame-mounted reservoir. The rear axle is a Meritor RT46-164E tandem rated at 46,000 lbs with 5/8" wall housings, a 3.73 ratio, synthetic axle lubricant, and tandem differential locks with speed interlock. Air disc brakes are fitted front and rear, with pad and rotor dust shields on the steer axle, PHP10 iron hubs in front, and PHP10 aluminum hubs on the drives. Safety systems include Bendix ESP electronic stability with ATC, 6S6M anti-lock brakes, and a tire pressure monitoring system. GAWR is 13,220 lbs front and 23,000 lbs on each rear axle, for a GVWR of 59,220 lbs and a GCW of 120,000 lbs.

The Holland FW35 fifth wheel top plate is set 6" behind the bogie centerline at 8.6"–9.25" height, mounted on a 36" Holland heavy-duty air slide with left-hand release and dash slide controls. Air equipment includes a heated Bendix AD-HF air dryer with coalescing filter, polished aluminum air tanks with pull cords, a back-of-cab air and electrical setup with diversion valve, 12' straight 3-in-1 lines with two 7-way plugs, a self-returning dash-mounted trailer brake hand valve, an ISO 3731 trailer ABS power connector with a 15' straight ISO cable, a trailer air suspension dump switch, and a switched battery-power feed to the J560 connector. Fuel capacity is 220 gallons across a 120-gallon right-hand and a 100-gallon left-hand 26" polished aluminum tank, each secured by four polished straps, with rear fill and a secondary tank sending unit. A large 30-gallon DEF tank is mounted on the left side behind the cab with a polished stainless steel cover.

Suspension
The rear suspension is a Peterbilt Air Trac rated at 46,000 lbs with 52" axle spacing, a steel suspension insert for up to 77" overhang, and a SmartValve with suspension over-inflate and dump functions that disengage at 7 MPH.

Cab & Interior
The aluminum cab sits behind a 131" BBC aluminum hood with polished crown, spring tilt assist, and severe service hood reinforcements, with a removable bugscreen behind the grille. The 58" low roof sleeper features a Premier interior in Alpine Gray, a premium pocket spring mattress, sleeper walkthrough curtain, left- and right-hand baggage doors, a rear wall storage shelf, rear sleeper audio controls, a right-hand 12V outlet, provisions for a 22" flat panel TV, a left-hand tilting sleeper window, and thermal insulation packages in both the cab and sleeper. Rubber flooring is fitted throughout the cab and sleeper.

Seating consists of Peterbilt LX premium-level driver and passenger seats, both air ride, high back, and leather in black, with a driver seat comfort package, a fold-away right-hand driver armrest, and a left-hand passenger armrest. The driver gets a tilt/telescoping steering column and a premium leather-wrapped multi-function steering wheel with audio and cruise controls. Additional cab features include high-visibility yellow grab handles, a one-piece curved windshield with privacy curtain, a dark-tinted fixed rear window, power windows and door locks, a combination fresh air heater/air conditioner with fine particulate filter, a floor-mounted cup holder, and a stainless steel V-style exterior sun visor.

The dash centers on a 15" digital cluster display showing transmission oil temperature, air filter restriction, trailer reservoir air pressure, secondary fuel level, engine and PTO hours, turbo boost, and engine percent torque. Additional 52mm backlit bright-bezel gauges cover front and rear drive axle oil temperatures, engine oil temperature, general air pressure, fuel filter restriction, and tractor brake application. Entertainment and communication include a ConcertClass AM/FM/weatherband radio with 3.5mm aux, Bluetooth phone and audio, USB port, two speakers each in the cab and sleeper, and CB wiring with a header-mounted provision and antenna. Global telematics hardware is installed with a 5-year SmartLinq remote diagnostics subscription.

Visibility and exterior equipment include heated and motorized 7"x18" West Coast-style stainless steel mirrors, two 8" heated stainless convex mirrors, a look-down mirror over the passenger door, and intermittent electric wipers. Lighting includes LED pod headlights with integral turn signals, daytime running lights, five LED bullet marker lights plus a mid-frame marker light, two roof-mounted LED strobe lights, LED stop/turn/tail/backup lights at the end of frame, mirror-mounted LED turn signals, a self-canceling turn signal, and a load light with wiring. Dual 30" chrome round air horns with polished shields, a 107 dB backup alarm, a fire extinguisher, auto-reset circuit protection, and a triangle reflector kit round out the equipment.

Body & Equipment
The chassis is equipped with frame-mounted flush deck plate and access packages on both sides, with polished deck plate access steps. A chrome steel Texas-style bumper with two tow points sits up front. The stylized left-hand aluminum battery box features a polished finish, non-slip step, and heavy-duty step reinforcement, with a matching polished aluminum non-slip aftertreatment cab entry step on the right-hand side. Paint is a two-stage Axalta finish in Mayfield Dairy Yellow across the cab, hood, sleeper, fenders, and roofs, over a black frame.

Tires & Wheels
Front tires are Continental 11R22.5 16-ply EcoPlus HS3+, and the eight rear tires are Continental 11R22.5 14-ply HDL3 Eco+. All positions ride on Alcoa 880677 22.5"x8.25" high-polish aluminum wheels, with wheel guards fitted between the brake drums and wheels and between the wheels on the tandem axle.

Warranty & Protection
This new unit is backed by Peterbilt Class 8 standard coverage of 1 year/100,000 miles (160,000 km) and an EPA emissions engine warranty of 5 years/100,000 miles.