Sierra Outboard Starter - SIE-18-5611

Sierra 18-5611 Mercury 9.9-25HP Outboard Starter

Replacement starter for Mercury Outboards and Mariner Outboards.

Features:

10 Tooth Drive Gear

Fits Mercury 9.9-25 HP Outboard.

Interchangeable With:

Arco

5367

Mallory

9-15022

Mercury Marine

50-90983T1

50-90983A1

50-8M0033984

50-893889T

MES

S2043M

Frequently Asked Questions

• What is the Sierra 18-5611 Mercury 9.9-25HP Outboard Starter used for? The Sierra 18-5611 is a replacement starter designed for Mercury and Mariner outboards. It fits Mercury 9.9-25 HP outboard applications and features a 10-tooth drive gear.
• What Mercury outboard engines does the Sierra 18-5611 starter fit? The Sierra 18-5611 is specified for Mercury 9.9-25 HP outboards. The supplied product description does not provide model years or serial-number ranges, so verify your engine application before purchasing or installing the starter.
• How many teeth does the Sierra 18-5611 starter drive gear have? The Sierra 18-5611 features a 10-tooth drive gear. Confirm the tooth count and application against the starter being replaced before installation.
• Is the Sierra 18-5611 compatible with Mariner outboards? Yes. The product description identifies the Sierra 18-5611 as a replacement starter for both Mercury and Mariner outboards. Specific Mariner model or year applications are not provided, so verify compatibility before installation.
• What Mercury Marine part numbers does the Sierra 18-5611 replace or interchange with? The Sierra 18-5611 is listed as interchangeable with Mercury Marine part numbers 50-90983T1, 50-90983A1, 50-8M0033984, and 50-893889T. Verify the applicable part number and engine specifications before selecting a replacement.
• What other starter part numbers interchange with the Sierra 18-5611? Additional interchangeable numbers listed for the Sierra 18-5611 include Arco 5367, Mallory 9-15022, and MES S2043M. Use the listed part numbers as a reference and confirm your specific engine application before installation.