Motors & Parts - Inboard & Outboard

Sierra Exhaust Bellows - Mercruiser - S18-2750. All #1 Units, Gen II, TRS, & Bravo I, II, III Replaces: 32734, 32734A3, 18654A1 (Includes S18-710-48-2 Clamp) Part Number SRA-S18-2750

Sierra Exhaust Boot - Mercruiser - S18-2748. Replaces: 32-44348, 32-44348T, 31-44348001 (4” Upper Tube) Part Number SRA-S18-2748

Sierra Seal & Gimbal Bearing Kit - Mercruiser - S18-2100K. Replaces: 30-60794A2, 30-60794A4, 30-879194A02 Greasable. Contains (1) each of S18-2094 & S18-2100 Fits: 1, R, MR and Alpha (1974-97) Part Number SRA-S18-2100K

Sierra Gimbal Bearing - Mercruiser - S18-21001. Replaces: 30-60794A2, 30-60794A4, 30-879194A02 Non Greasable Fits: MC-1, R, MR and Alpha(1974-97), Gen II(1991-97), Bravo I/II/III (1988-95) Part Number SRA-S18-21001

Sierra Gimbal Bearing - Mercruiser - S18-21005. Replaces: 30-862540A3, 30-862540T1, 30-862540A04, 30-879194A01. Greasable Fits: All Bravos, Alpha One Gen II (1998-up) Part Number SRA-S18-21005

Sierra Gimbal Bearing - Mercruiser - S18-21006. Non Greasable Replaces: 30-862540T1, 30-862540A3, 30-862540A04, 30-879194A01 Fits: Gen II (1998-10), Bravo I/II/III & X/XR/XZ (1996-10) Part Number SRA-S18-21006

Sierra Voltage Regulator - Mercruiser - S18-5740. Replaces: 42785 Part Number SRA-S18-5740

Sierra Ignition Module - Mercruiser - S18-5107-1. Replaces: 3854003 4/6/8 cyl Part Number SRA-S18-5107-1

Sierra Ignition Coil - Mercruiser - S18-7648. Replaces: 3861267 Fits: 8.1Gi-A, 8.1Gi-B, 8.1Gi-BF, 8.1Gi-C, 8.1Gi-CF, 8.1Gi-D, 8.1Gi-DF, 8.1GSi-A, 8.1GXi-A, 8.1GXi-AF, 8.1GXi-B, 8.1GXi-BF, 8.1GXi-C Part Number SRA-S18-7648

Sierra Coil - Mercruiser - S18-7493. Replaces: 3859078  For: 8.1L 2001-2007 Part Number SRA-S18-7493

Sierra Ignition Coil - Mercruiser - S18-5465. Replaces: 392-863704T, 8M0054588 2001 and newer 4.3L, 5.0L, 5.7L & 6.2L with 555 ECM (OM300000 and up) Part Number SRA-S18-5465

Sierra Ignition Coil - Mercruiser - S18-5438. Replaces: 392-7803A4, 392-805570A2 HEI Thunderbolt Ignition Part Number SRA-S18-5438

Sierra Ignition Sensor Kit - Mercruiser - S18-5116-1. Replaces: 87-861780A2, Q4, 87-892150A02 For: V-6 & V-8 with Thunderbolt ignition (1981-1997) nut connectors Part Number SRA-S18-5116-1

Sierra Map Sensor - Mercruiser - S18-7660. Replaces: 881731, 8M0054726 V-6 & V-8 MPI engines with 555 ECM Part Number SRA-S18-7660

Sierra Choke Thermostat - Mercruiser - S18-7664. Replaces: 809066 Weber 4V Carburetors with electric choke Part Number SRA-S18-7664

Sierra Choke Pull-Off - Mercruiser - S18-7666. Replaces: 1397-8582 Rochester 4V carburetors Part Number SRA-S18-7666

Sierra Temperature Sensor - Mercruiser - S18-7600. Replaces: 805218T Part Number SRA-S18-7600

Sierra Map Sensor - Mercruiser - S18-7551. Replaces: 861425 Fits: Mercury Scorpion, Black Scorpion 1998-2010 Part Number SRA-S18-7551

Sierra Fuel Pressure Regulator - Mercruiser - S18-7663. Replaces: 802630T01, 802630001, 802630T, 802630, 8M0069803 7.4L MPI (L29) Part Number SRA-S18-7663

Sierra Knock Sensor - Mercruiser - S18-7554. Replaces: 878187 Fits: Mercury 5.7L MAG 1994-2010 Part Number SRA-S18-7554