Total Price:
Add to CartReplacement starter for Mercury Outboards and Mariner Outboards.
Features:
Interchangeable With:
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.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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