Overview

Overview

This is a new 2027 Peterbilt Model 589 Traditional day cab tractor, spec'd for construction dump service on and off the highway. It's set up to haul construction materials with a semi-end dump trailer (53 ft trailer, 13.5 ft trailer height, 36 in kingpin, two trailer axles). It has a 225-inch wheelbase, a 99.9-inch front-axle-to-back-of-cab dimension, a 125.1-inch cab-to-axle measurement and a 180.1-inch cab-to-end-of-frame measurement. Engineering ratings are 13,200 lbs GAWR front and 20,000 lbs on each of the two drive axles, for a 53,200 lb GVWR and an 80,000 lb GCW. The cab, hood top, cab roof and fenders are Northsea Gray (L2304EY) in Axalta two-stage metallic/pearl paint over a black frame.

Engine & Drivetrain

Power comes from a Cummins X15 Performance Series 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's a 2026 model-year engine with 2024-series emissions, CARB compliant and certified for both CARB and EPA idling rules. The engine uses EMUX electronics architecture and a Predictive Cruise Control package, with the powertrain tuned for performance in vocational and heavy-GCWR work. The effective road speed limit is set at 65.0 mph or greater, and typical operating speed is 70 mph. Other engine features include a Jacobs compression brake with controls on the right-hand column, engine protection shutdown, an enabled idle shutdown timer with an ambient-temperature override, and a PTO maximum engine speed of 1,400 RPM. Supporting equipment includes a PACCAR 160-amp brushed alternator, a PACCAR 12V starter, three PACCAR Premium 12V dual-purpose batteries (2,190 CCA), a 110–120V immersion block heater and an 18.7 CFM air compressor. There's also a 2-speed fan clutch for frequent start/stop work, a high-efficiency cooling system, a PACCAR extended-service fuel/water separator and 12V fuel filter heat. Air intake is through 15-inch premium stainless cowl-mounted air cleaners with slotted stainless caps. Exhaust runs through a dual SOC single-module DPF/SCR mounted under the cab on the right side, out to dual 7-inch chrome-plated steel standpipes 36 inches tall with 45-degree curved tips. The transmission is an Eaton RTLO20918B 18-speed with an oil-to-water cooler, a chrome manual shifter, and a self-adjusting, pre-damped clutch. The driveline is an RPL20 interaxle with an RPL25 SD main driveline and one midship bearing. PTO provisions include a dash-mounted single-acting electric-over-air PTO control and a 12-pin remote PTO/throttle provision in the engine bay.

Chassis & Axles

The frame uses 10-5/8-inch steel rails with 5/16-inch thickness, a zinc-coated anti-corrosion treatment and aluminum crossmembers. It ends in a tapered tractor end-of-frame with a crossmember and kingpin cutout. The front axle is a Dana Spicer E1322IL rated at 13,200 lbs with a 3.5-inch drop and a wide track, steered by a Sheppard HD94 power steering gear with a frame-mounted reservoir. The rears are Dana Spicer DSH40 High Performance 40 tandem axles rated at 40,000 lbs with a 3.70 ratio. Traction and control features include driver-controlled tandem diff locks with speed interlock, separate dash-controlled full-lock traction control, and the Bendix ESP Electronic Stability Program with ATC. The truck also has 6S6M anti-lock brakes, a tire pressure monitoring system and synthetic lubricant in all axles. Braking is Bendix ADB22X air disc front and rear with pad dust shields, running on PHP10 aluminum PreSet+ hubs on both axles.

Suspension

The front runs 13,200 lb taper leaf springs with Tenneco shocks, greasable spring pins and 40 mm spring spacer blocks. The rear uses a lightweight Peterbilt Low Air Leaf suspension rated at 40,000 lbs with 52-inch axle spacing. It has a single leveling valve on the forward drive axle, a dash-mounted dump switch with an indicator light, and a backlit air suspension pressure gauge. The cab also rides on its own air suspension.

Cab & Interior

The aluminum day cab has a 131-inch BBC aluminum hood with a polished crown and spring tilt assist, plus the SmartSound cab insulation package and Peterbilt keyless entry. Inside is the Platinum interior in Alpine Gray with a rubber floor. Both seats are Peterbilt LX Premium Level high-back air-ride seats in black leather. The driver's seat is heated with left and right armrests, and the passenger seat has a left armrest. The steering column tilts and telescopes, and the premium leather-wrapped steering wheel has multifunction audio and cruise controls. The 15-inch digital instrument cluster displays transmission oil temperature, air filter restriction, trailer reservoir pressure, secondary fuel level, engine hours, PTO hours, turbo boost and percent torque. Bright-bezel 52 mm backlit gauges cover front and rear drive axle oil temperature (with gauge guards), engine oil temperature, fuel filter restriction and tractor brake application. There are four additional dash switches wired behind the dash. For entertainment and communication, the cab has a ConcertClass AM/FM/WB radio with 3.5 mm aux, satellite radio, Bluetooth phone and audio, a USB port, a midlevel four-speaker package and a header-mounted Uniden PC78LTX CB with antenna mounts on both mirrors. It also has global telematics hardware and a 5-year SmartLINQ RD subscription. Other comforts include a combination fresh-air heater and A/C, power door locks and windows, dual USB charging, a pull-out work tray over the glove box, a deep rear-wall map pocket and dark window tint. The one-piece curved windshield has electric intermittent wipers, and the rear cab window is one-piece fixed glass. Outside, the cab has a stainless V-style sunvisor and heated, motorized 7x18-inch stainless West Coast mirrors. Below them are two 8-inch heated convex mirrors, and there's a look-down mirror over the passenger door. Other exterior features include an NFPA-compliant textured grab handle, a removable bugscreen behind the grille and an under-cab air horn. Safety items include a fire extinguisher, a triangle reflector kit and a variable 87–112 dB backup alarm.

Body & Equipment

The fifth wheel is a Holland FW35 top plate on a Holland heavy-duty 30-inch no-tilt convertible air slide. It's outboard mounted, set at a height of 8.6 to 9.25 inches at the bogie centerline, with a left-hand release and slide controls. Behind the cab is a right-side frame-mounted deck plate and access package. The air system uses a heated Bendix AD-HF EP air dryer with a coalescing filter and extended purge. Air tanks are polished aluminum outside the frame rails, with natural aluminum tanks under the box painted behind the cab, and every tank has a pull cord. Trailer connections include 15-foot straight 3-in-1 air and electric lines with two 7-way plugs and a QCP socket, a chromed hose tenna, and an ISO 3731 trailer ABS power connector with a 15-foot straight ISO cable. Controls include a self-returning dash-mounted trailer brake hand valve, a keyed dash switch sending battery power to the J560, and two bottom-dump trailer dump switches wired to a Berg 4-way socket behind the cab. Fuel capacity comes from a polished 26-inch 90-gallon aluminum tank on the left side and a polished 26-inch 100-gallon split aluminum tank on the right. The right tank holds 65 gallons of fuel in its rear section and has an additional sending unit, and both tanks have center fills and polished straps. The 14-gallon DEF tank sits on the left side behind the cab under a polished stainless cover. The aluminum battery box has a stylized design, a polished finish, non-slip steps and heavy-duty step reinforcement, and it carries a Kissling 300A cab power disconnect switch and a low-voltage disconnect. On the right side, a polished aluminum non-slip cab entry step covers the aftertreatment. Up front is a chromed steel Texas-style bumper with two tow points. Other exterior items include stainless braceless quarter fenders and Peterbilt premium stainless mudflap hangers. For lighting, the truck has projector headlights with integral turn signals, daytime running lights and five LED bullet marker lights. It also has self-canceling turn signals, mirror-mounted LED turn signals, frame-end LED stop/turn/tail/backup lights and two flush-mounted LED load lights behind the cab. Pre-wiring is in place for fog lights, a beacon or strobe (10 ft of wire at the rear sill) and auxiliary lights on the air cleaners. The brake lights are set not to activate with the engine brake.

Tires & Wheels

The steer axle runs Bridgestone R283S Ecopia 11R22.5 16-ply tires, and the drive axles run eight Bridgestone M760 Ecopia 11R22.5 14-ply tires. All positions use extra-polished Accuride 43644SP 22.5x8.25 aluminum wheels, with wheel guards on the steer and tandem axles.

Warranty & Protection

This new unit comes with Peterbilt Class 8 Standard Coverage for 1 year/100,000 miles (160,000 km). The Cummins X15 emissions warranty (CARB operation) runs 5 years/350,000 miles.