LS Harmonic Balancer Mounting Puller Pulley Tool Kit For Chevrolet GM LS LS1 LS3. 25264 Harmonic Balancer Puller: Compatible with GM LS engine models: 5.3L, 5.7 LS1, 6.0 LS2, 6.2 LS3, 7.0L. Unique Design: The harmonic balancer puller adopts a "clamp-in" design, which can be disassembled without connecting.