SLP Balancer/Underdrive Pulley, 1999-08 4.8/5.3/6.0 Silverado/Sierra/SUV, 2006-07 Trailblazer SS.

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