MECHANICAL Axle, 4.30 ratio (Standard on 4500 model only.) Air cleaner, heavy-duty, 11" diameter dry paper single element. Air cleaner canister standard with air restriction gauge. Back of cab location. Battery, 750 cold-cranking amps, 12-volt single, maintenance free, frame-mounted battery box Frame, ladder-type channel frame. Full C section straight frame 33.5" (85.1 cm) wide. Yield strength 44,000 psi, section modulus 7.20 cu.in. and RBM 316,800 lb-ft/in per rail. Incomplete vehicle certification Wheelbase, 150" (381.0 cm) GVWR, 14,500 lbs. (6577 kg) Rear suspension, 12,900 lbs. (5851 kg), multi-leaf, semi-elliptical steel alloy. Includes shock absorbers Vehicle Application Truck Fuel tank, 38.6 Gallon, (146L), rectangular fuel tank. mounted between frame rail with electric type fuel pump (mounted in tank). Through the rail fuel fill. Exhaust, single outlet --- EXTERIOR Grille, Silver Glass, tinted Mirror, outside left hand and right hand dual cab mounted exterior with integral convex mirror Windshield wiper, pulse, wet arm --- ENTERTAINMENT Audio system feature, 2 speakers --- INTERIOR Cup holders Steering wheel, urethane Driver Information Center Windshield washer bottle access on passenger side dash when passenger-side door is open Storage, door pockets Lighting, interior dome Storage, seatback pockets --- SAFETY Brake, parking, cable actuated, internal expanding drum type, transmission-mounted --- Drivetrain:Drivetrain, rear-wheel drive Steering:Front axle, 6,830 lbs. (3098 kg), reverse Elliot "I"-beam includes integral hydraulic power steering. ratio 18.8-20.9:1 Brakes:Brakes, 4-wheel antilock, front disc Wheels:Wheels, 19.5" x 6", K steel Tire - Front:Tires, front, 225/70R19.5 G, LRR (low rolling resistance) tubeless steel belted radial, all-season Tire - Rear:Tires, rear, 225/70R19.5 G, LRR (low rolling resistance) tubeless steel belted radial, all-season Running Boards:Assist steps Floor Mats:Floor mats Convenience:Steering column, Tilt-Wheel Window:Windows, power Air Conditioning:Air conditioning, single-zone manual, integral in-dash mounted Safety Features:Daytime Running Lamps