Converts factory gm m12x1.5 cylinder head port to 1/8-inch npt
Allows easy installation of aftermarket water temperature gauges
Fits all gm ls-series engines including ls1, ls2, ls3, and lsx
Precision cnc machined for accurate thread engagement and sealing
Includes sealing washer for a reliable fluid-tight installation
This precision billet aluminium adaptor allows aftermarket water temperature senders to be installed directly into GM LS series cylinder heads. It thread-matches the factory metric M12x1.5 cylinder head port on one end while converting to a standard 1/8-inch NPT female thread for gauge senders. The compact design ensures accurate fluid temperature readings without restricting coolant circulation in modern LS V8 engines.
PurchaseCalflow GM LS1 LS6 LS2 LS3 LSX Coolant Water Tempe...