ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body H770003L Simple Sizing - only two

Simple Sizing - only two sizes - Medium (up to 16") neck and Large

extended pilot bearings or other spacers may be required

This intake is 50-state legal for 2009-2017 models

Throttle Body Spacer

Block mount GM LS gear reduction mini-starter works with 168-tooth flywheels and provides increased starting performance over OE style starters

ATI LS Harmonic Balancer 5.67 25% UD GM Y-Body H770003L Simple Sizing - only twoProduct Description: Harmonic Balancer Serpentine Super Damper 5. 67 in OD SFI 18. 1 Aluminum Steel Black Internal Balance GM LS Series Sold Individually ATI Performance Products is a company founded on innovation, precision and service. ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. ATI Performance Products is the creation of over 40 years of Transmission and performance component manufacturing and racing