Water Pump Pulley, without A/C,  2 groove, code KM,  replaces GM # 405461. Fits 1970 F85 and Cutlass with heavy duty cooling, 70 442 with OAI (Ram Air) W/O AC., 71 with OAI (Ram Air), 72 with OAI (Ram Air), 73-77 except A/C and heavy duty cooling.