Ignition Coil for Mercury & Mariner Outboards

High-quality marine-grade aftermarket ignition coil for selected Mercury and Mariner 8 HP, 9.9 HP, 13.5 HP and 15 HP 4-stroke outboard engines.

Designed as a direct replacement for the original ignition coil where the engine model and part number match.

Fitment

Mercury / Mariner 4-Stroke Outboards

Fits selected:

8 HP – 4-Stroke
9.9 HP – 4-Stroke, 323cc
13.5 HP – 4-Stroke
15 HP – 4-Stroke

Please check your exact engine model, serial number and original ignition coil part number before ordering.

Mercury and Mariner used different ignition systems within these horsepower ranges, so do not order by HP alone.

Replaces Mercury / Mariner Part Numbers

855685
855685T

Searchable References

855685 T
855685T
Mercury 855685
Mercury 855685T

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

Product Features

Ignition coil assembly
Mercury / Mariner 8 HP
Mercury / Mariner 9.9 HP
Mercury / Mariner 13.5 HP
Mercury / Mariner 15 HP
4-Stroke
Direct replacement where part number matches
Reliable spark output
Marine-grade aftermarket construction
New

Important – Electrical Part

Please diagnose the engine fault before purchasing.

Ignition coil faults can have similar symptoms to problems with the CDI/ignition unit, spark plugs, charging system, fuel system or wiring.

Electrical parts that have been fitted or installed cannot be returned unless faulty.

If you are unsure, please send SSI Marine your:

Engine HP
Engine serial number
Full model if available
Original ignition coil part number

We will be happy to check compatibility before you order.

Buyer Responsibility

It is the buyer's responsibility to confirm compatibility with the engine model and serial number before purchase.

Do not order by horsepower or appearance alone. If the ignition coil looks the same as yours, this does not always mean it is the correct part for your outboard.

Why Buy From SSI Marine?

Workshop-tested aftermarket & OEM-spec marine parts
Same-day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
UK stock
Collection available from Leigh, Greater Manchester
Technical support available

8 HP 9.9 HP 13.5 HP 15 HP Mercury Mariner Outboard Ignition Coil 4 Stroke 855685T