Fits GM 4.3L V6. HyperSpark distributors are plug and play with Sniper EFI and other HyperSpark related components, making it a seamless installation. Each distributor and shutter wheel are CNC billet construction to protect against high speeds and durability during drivability. Our single Hall Effect sensor guards against signal interference, keeping timing control accurate and steady. Along with plug and play ease, we include our patented clear cap for quick installation of the distributor. For best results, we offer many HyperSpark products to maximize your engine performance.. This is a cast distributor gear, it is recommended to consult your camshaft manufacturer prior to installation to confirm what distributor gear material they require. When changing distributor gears, it is critical to measure the shaft diameter OD and gear ID, before installing the new gear on the shaft.