Page 776 - 2021 Sierra Catalog

18-3549 THERMOSTAT Replaces: 14586 120°
18-3550
THERMOSTAT Replaces: 59078, 59078A1 140°
18-3551
THERMOSTAT
Replaces: 32728, 35884, 59137, 59137A1, 8072521, 8072531,
807252T1, 8M0089715
142°
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°
18-43015
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
18-3568
THERMOSTAT KIT Replaces: 99155T1
18-3644
THERMOSTAT KIT
—CONTAINS—
Model Year Serial #
Part # Description O.E.#
5.7MIE 1998-2001 OL002003 & Up
18-3649 Thermostat 160° 807252T2
MX6.2LMPI 2000-2001 OL680003 & Up
18-2553 Thermostat
Cover Gasket 27-47510
454 Horizon MIE 1998-2001 OL002200 & Up
18-2917 Thermostat
Cover Gasket 27-53045-1
502 Mag. MPI 1998-2001 OL017000 & Up
➀18-3646D
18-3646
THERMOSTAT KIT Replaces: 807252Q3, 807252T6
—CONTAINS—
➀18-3647D
18-3647
THERMOSTAT KIT Replaces: 807252Q5, 807252T8
—CONTAINS—
➀18-3648D
18-3648 THERMOSTAT KIT 160°
Part # Description O.E.#
Part # Description O.E.#
18-3649 Thermostat 807252-2
18-3551 Thermostat 59137
18-2844 Thermostat Cover Gasket 27-48818-1
18-2917 Thermostat Housing Gasket 27-53045-1, 27-33918
18-2552 Thermostat Cover Gasket 27-33179-2
18-2553 Thermostat Cover Gasket 27-47510
18-2844 Thermostat Cover Gasket 27-48818-1
18-7173 O-Ring 25-30224
18-2553 Thermostat Cover Gasket 27-47510
18-2917 Thermostat Housing Gasket 27-53045-1, 27-33918
18-2834 Thermostat Cover Gasket 27-60208
➀18-3650D
18-3650 THERMOSTAT KIT Replaces: 59078T3
—CONTAINS—
➀18-3651D
—CONTAINS—
18-3651 THERMOSTAT KIT
18-3652
THERMOSTAT KIT
—CONTAINS—
Part # Description O.E.#
18-2554 Thermostat Cover Gasket 27-90556
18-2553 Thermostat Cover Gasket 27-47510
Part # Description O.E.#
Part # Description O.E.#
18-2834 Thermostat Cover Gasket 27-60208
18-2555 Thermostat Cover Gasket 27-89656-1
18-2831 Thermostat Gasket 27-47590-1
18-2844 Thermostat Cover Gasket 27-48818-1
18-2843 Thermostat Cover Gasket 27-74830
18-3550 Thermostat 59078
18-3551 Thermostat 59137
18-3552 Thermostat 76270
THERMOSTAT APPLICATION BEGINS ON NEXT PAGE
➀ Items ending in "D" are Display Packaged - Regular number is Non-Display
758
I/O — MERCRUISER - Cooling System