COMP Cams 1.350" Spring Seat Cutter 91609159 9LSU wideband sensor and AEM

9LSU wideband sensor and AEM X-Series Wideband UEGO AFR Gauge with 4

M6 Anchors

Honeycomb pattern allows pad to remain firm enough to maintain car-feel but enough give for comfort

Unlike competitor models

COMP Cams 1.350" Spring Seat Cutter 91609159 9LSU wideband sensor and AEMMost high performance engines today require the use of larger than stock diameter valve springs. This 1. 350" Spring Seat Cutter for installing single springs on GM Vortec Heads without hardened spring seats will allow the engine builder to machine the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor pilot, which are available in three different sizes. This valve seat cutter allows you to enlarge the cylinder