KRD PERFORMANCE 2 PCS Reducing Bush Female 18 NPT to Male Metric M16 x 15mm Adapter Fitting for All GM LS Engines Aluminum Black

Size ColorMale M1615 and Female 18 NPT thread Black Anodized Finish for Strength and Durability High Quality High performance lightweight 6061T6 CNC machined billet aluminum alloy Clear precision threads tight connection no slip Precision machined to ensure thread engagement The wall thickness is sufficient at the base of the male threadswhich wont crack or break Hardanodized coating is compatible with alcohol exotic fueladditives water and oil Fitment Compatibility Works well on LS1 LS3 LSX Gauge and all GM LS Series Engines Easy to Use This adapter installs most commonly in the toprear or frontdriver side of the engine block to access pressurized oil of the engine Seals to the block with a sealing washer Also You can use this to adapt a mechanical oil pressure gauge on your LS swap 18 NPT taper pipe thread port in the rear of the fitting allows for common sensors or plumbing fittingsDesigned For Smooth Flow Easy Assembly Long last Package list 2 x Adapter 2 x Sealing Washer Convenient to install