Starter Motor for Mercury & Mariner 4-Stroke Outboards

Premium-quality aftermarket starter motor for selected Mercury and Mariner 8 HP, 9.9 HP, 13.5 HP and 15 HP 4-stroke outboard engines.

Suitable for the specified 323cc models, including selected Bodensee 4-stroke engines.

Designed as a direct replacement for Mercury / Mariner starter motor 859168T and associated superseded part numbers.

Fits Mercury & Mariner Outboards

9.9 HP / 13.5 HP / 15 HP – 323cc

Fits selected models with serial numbers:

0G760300 – 1B226999

8 HP / 9.9 HP / 15 HP Bodensee – 4 Stroke

Fits serial numbers:

0G760300 – 1B226999

15 HP – 4 Stroke

Fits serial numbers:

0G590000 – 0G760299

⚠️ Important – Will NOT Fit

This starter motor WILL NOT FIT:

Newer models with serial numbers beginning 0R... and up
Earlier 6G8... models
Earlier 6G9... models

Please check your engine serial number before ordering.

Do not order by horsepower or appearance alone.

Replaces Mercury / Mariner Part Numbers

50-852570T
852570T
50-857065
857065
50-859168
859168
50-859168T
859168T

OEM part numbers are used for identification and cross-reference purposes only.

Product Features

Starter motor for Mercury & Mariner outboards
Selected 8 HP, 9.9 HP, 13.5 HP & 15 HP
4-stroke applications
Fits selected 323cc engines
Fits selected Bodensee models
Premium-quality aftermarket replacement
Marine-grade construction
Manufactured to OEM specifications
Direct replacement for corresponding Mercury / Mariner starter
New starter motor

Important – Check Your Serial Number

Mercury and Mariner produced several different versions of these engines, and the same horsepower does not necessarily use the same starter motor.

Before ordering, please check:

Engine horsepower
4-stroke engine
Engine serial number
Original starter motor
Original part number

Especially Important

This starter is NOT suitable for the newer 0R... serial-number engines or the earlier 6G8... / 6G9... versions.

If you are unsure, please send us your engine serial number before ordering and our technical team will be happy to check compatibility.

Why Buy From SSI Marine?

Premium aftermarket & OEM-spec marine parts
Workshop-tested products
More than 10 years supplying outboard parts
UK stock
Same working day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
Technical support from experienced outboard specialists
Collection available from Leigh, Greater Manchester

Mercury Mariner Outboard 8 HP 9.9 HP 13.5 HP 15 HP 4 Stroke Starter Motor 859168T 852570T