Key Features:

• Standard package of 2

Additional Details:

• Material: Zinc
• For: Bravo I, II, III (1988-1995)

Interchanges/Replaces

GLM

• 12700

Mercruiser Stern Drive

• 55989
• 55989A3
• 55989A4
• 55989A9
• 97-55989Q9
• 97-55989T9

Interchanges/Replaces

Johnson/Evinrude Outboard

• 435474
• 5000356
• 5000784

Interchanges/Replaces

Mercury Marine

• 1647-9148A93
• 1647-9148T93

Additional Details:

• For Ratios: 1:47:1. 1:62:1, 1:82:1, 1:94:1
• Fits: Gen II (1998 & Up) s/n 0L100040 & Up

Use With:

• 18-2331: Drive Shaft
• 18-2415: Gear Housing Assembly

Interchanges/Replaces

Mercruiser Stern Drive

• 1623-815822A32
• 1623-815822A43
• 1623-815822A5
• 1623-815822A53

Additional Details:

• For: R Style

Interchanges/Replaces

GLM

• 17000

Mercruiser Stern Drive

• 1623-3489A1
• 1623-3646A1
• 1623-3646A4
• 1623-4110A3
• 1623-5356A4

Additional Details:

• For Ratios: 1:47:1, 1:50:1
• Fits: Alpha One Gen II (1991 & Up)

Use With:

• 18-2411: Driveshaft Housing Assembly
• 18-6351: Upper Unit Gear Set

Interchanges/Replaces

Mercruiser Stern Drive

• 1547-815930A16
• 1547-815930A6
• 1547-861063A12

Additional Details:

• Ratios: 1:98:1, 2:40:1
• For: Alpha Gen II (1991 & Up)

Use With:

• 18-2411: Driveshaft Housing Assembly
• 18-6352: Upper Unit Gear Set

Interchanges/Replaces

Mercruiser Stern Drive

• 1547-815930A13
• 1547-815930A3
• 1547-861063A6

Additional Details:

• For Ratios: 1:47:1, 1:62:1
• Fits: Gen II (1998 & Up) S/N (0L100040 & Up)

Use With:

• 18-2400: Complete Lower Unit Assembly

Interchanges/Replaces

Mallory

• 9-79126

Mercruiser Stern Drive

• 1623-815822A36

Additional Details:

• Material: Zinc
• For:: MR & Alpha I drives

Interchanges/Replaces

Mercruiser Stern Drive

• 888756A2
• 888756Q02
• 97-888756Q04

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-6011	Honda Outboard 41107-ZW1-003ZA Mercruiser Stern Drive 31640 316404 31640A1 97-31640Q4 Mercury Marine 31640 316403 316404 31640A1 31640A2 31640A4 31640B4 72436A1 97-31640Q4	1	Anode		N/A
18-6015-9	GLM 12700 Mercruiser Stern Drive 55989 55989A3 55989A4 55989A9 97-55989Q9 97-55989T9	1	Anode (Priced Per Pkg of 2)		N/A
18-6066	GLM 12713 Mercruiser Stern Drive 43994A2 821631A1 821631B1 97-821631C 97-821631Q1	1	Anode		N/A

Additional Details:

• Drive Gear: 20 Teeth
• Driven Gear: 22 Teeth
• Ratio: 1.47:1
• For: Alpha I (Gen II) (1998 & Up), 0L100040 & Up

Use With:

• 18-2416: Complete Upper Unit Assembly

Interchanges/Replaces

Mercruiser Stern Drive

• 43-853641A2