Sierra Marine Parts Catalog

740 I/O — MERCRUISER - Cooling System 18-3552 THERMOSTAT Replaces: 76270, 76270T 160° 18-3555 THERMOSTAT Replaces: 99155A1, 99155T2 160° 18-3557 THERMOSTAT Replaces: 47594 143° 18-3649 THERMOSTAT Replaces: 8072522, 807252T2, 8052732, 8M0091470 160° 18-3550 THERMOSTAT Replaces: 59078, 59078A1 140° 18-3551 THERMOSTAT Replaces: 32728, 35884, 59137, 59137A1, 8072521, 8072531, 807252T1, 8M0089715 142° 18-3549 THERMOSTAT Replaces: 14586 120° 18-3646 THERMOSTAT KIT Replaces: 807252Q3, 807252T6 —CONTAINS— Part # Description O.E.# 18-3551 Thermostat 59137 18-2917 Thermostat Housing Gasket 27-53045-1, 27-33918 18-2844 Thermostat Cover Gasket 27-48818-1 18-2553 Thermostat Cover Gasket 27-47510 18-2834 Thermostat Cover Gasket 27-60208 18-3644 THERMOSTAT KIT —CONTAINS— Part # Description O.E.# 18-3649 Thermostat 160° 807252T2 18-2553 Thermostat Cover Gasket 27-47510 18-2917 Thermostat Cover Gasket 27-53045-1 18-3647 THERMOSTAT KIT Replaces: 807252Q5, 807252T8 —CONTAINS— Part # Description O.E.# 18-3649 Thermostat 807252-2 18-2844 Thermostat Cover Gasket 27-48818-1 18-2552 Thermostat Cover Gasket 27-33179-2 18-2553 Thermostat Cover Gasket 27-47510 18-7173 O-Ring 25-30224 18-2917 Thermostat Housing Gasket 27-53045-1, 27-33918 18-3568 THERMOSTAT KIT Replaces: 99155T1 Model Year Serial # 5.7MIE 1998-2001 OL002003 & Up MX6.2LMPI 2000-2001 OL680003 & Up 454 Horizon MIE 1998-2001 OL002200 & Up 502 Mag. MPI 1998-2001 OL017000 & Up ➀ 18-3646D ➀ 18-3647D THERMOSTAT APPLICATION BEGINS ON NEXT PAGE ➀ Items ending in "D" are Display Packaged - Regular number is Non-Display 18-3651 THERMOSTAT KIT —CONTAINS— Part # Description O.E.# 18-2554 Thermostat Cover Gasket 27-90556 18-2553 Thermostat Cover Gasket 27-47510 18-2834 Thermostat Cover Gasket 27-60208 18-2844 Thermostat Cover Gasket 27-48818-1 18-3551 Thermostat 59137 18-3648 THERMOSTAT KIT 160° 18-3650 THERMOSTAT KIT Replaces: 59078T3 —CONTAINS— Part # Description O.E.# 18-2831 Thermostat Gasket 27-47590-1 18-3550 Thermostat 59078 ➀ 18-3648D ➀ 18-3650D ➀ 18-3651D 18-43015 THERMOSTAT Replaces: Mercury 864493 Fits: Mercruiser MCM 4.3L MPI, 5.0L MPI and MX6.2L w/dry joint exhaust and closed cooling 18-43017 THERMOSTAT Replaces: Mercury 863358T, 8M0074922, 8M0076464 Fits: Mercruiser 496 Mag & HO, 8.1L MIE & HO 18-3652 THERMOSTAT KIT —CONTAINS— Part # Description O.E.# 18-2555 Thermostat Cover Gasket 27-89656-1 18-2843 Thermostat Cover Gasket 27-74830 18-3552 Thermostat 76270