CNC-machined from 6061 aluminum with Type III hardcoat anodizing for durability 3-pin plug with terminals and seals, keyed for GM LSA/LS9 MAP sensor (PN 12592525) — keys can be trimmed for other Bosch-style sensors Brass barb fitting (1/8" hose × 1/8" NPT thread) for easy vacuum line integration Stainless steel screws and MAP sensor hold-down screw Not compatible with 4-wire TMAP sensors