SLP Harmonic Balancer/Underdrive Pulley, 1999-09 4.8/5.3/6.0 Silverado/Sierra/Classic/SUV/2006-09 Trailblazer SS w/Bolt

SLP's new 25% underdrive balancer for 1999-2008 4.8/5.3/6.0 Silverado/Sierra/SUV and 2006-08 Trailblazer SS incorporates a number of high quality features you won't find on any other aftermarket unit and makes up to 4.9 additional rear wheel horsepower and 6.1 ft-lbs of rear wheel torque. Among these features are a pair of extra tall belt retention walls that eliminate the belt slippage issues common with other balancers. Other unique design strengths include a 100% steel construction (other brands use aluminum), integral timing marks and built in puller mounting threads. Includes a new balancer bolt and detailed installation instructions.

NOTE: Requires two new belts

Main Belt: Dayco 5060895 or 89.5" Equivalent (When the vehicle is equipped with an Overdrive Alternator, use Dayco 5060882 or 88.2" Equivalent).

Accessory Belt: Dayco 5040345 or 34.5" Equivalent.

Features:
Up to 4.9 Rear Wheel Horsepower Increase
Up to 6.1 ft-lbs. Rear Wheel Torque Increase
Extra-tall belt-retention "walls"-no more thrown belts!
100% steel construction
Lighter than the stock balancer
Integral timing marks and puller-mounting threads
Does not cause false knock retard or erratic power-curve dips
Includes a new balancer bolt