1988-2003 GM Truck 4.3L/305/350 with External Alternator Fan
March GM Trucks Serpentine Performance Pulley Sets are precision CNC-machined from solid billet aluminum or high-carbon billet steel for 1988-2003 Chevrolet/GM truck, van and SUV applications with small and big block Chevy engines. They are computer designed for each application assuring that the electrical and cooling systems function properly while your engine runs easier, the no-slip deep grooves eliminate belt squeal and throwing!
Increases horsepower by reducing accessory drag (typically 12.5 HP at rear wheels) and eliminates belt throwing. Designed for normal street driving.
Power & Amp Series
Increases horsepower by reducing accessory drag (typically 11 HP at rear wheels). Designed for vehicles with automatic transmission or high-amperage need. Excellent for towing and stop-and-go driving.
Steel Pulleys are precision machined to run perfectly true. The high-carbon billet steel is covered with iron phosphate and then powdercoated high-gloss black polyester for maximum rust prevention.
Aluminum Pulleys are precision machined from 6061-T6 billet aluminum for extra strength and wear. They are hand polished and powdercoated clear or black for a maintenance-free finish.
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.