855721T8 Mercury Stator | Genuine Used Part

🔧 Product Description

Genuine Mercury / Mariner Small Outboard Stator Assembly - Part Number: 855721T8

A genuine Mercury / Mariner stator assembly used on small 6HP to 25HP two-stroke outboards. This stator mounts under the flywheel and supplies ignition and charging output on compatible two-cylinder XD-series engine families.

⚙️ Key Features

• Genuine Mercury / Mariner stator assembly

• Correct Mercury part number 855721T8

• Related to 855721A4 stator reference

• Used on 6HP to 25HP two-stroke outboards

• Cross-references with CDI 174-5721 replacement family

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 855721T8 later Mercury stator assembly reference

• 855721A4 earlier / related Mercury stator assembly reference

OEM / Related Numbers:

• 855721T8

• 855721T 8

• 855721A4

• 855721A 4

• 398-855721T8 related service format

Aftermarket / Verified Equivalents:

• CDI Electronics: 174-5721

• Aftermarket reference: 855721T8

• Aftermarket reference: 855721A4

🚤 Compatibility

Commonly used on:

• Mercury / Mariner small two-stroke outboards

• Two-cylinder XD-series charging and ignition systems

Typically suits:

• Engine models:

• Mercury 6HP two-stroke applications where 855721T8 is specified

• Mercury 8HP two-stroke applications where 855721T8 is specified

• Mercury 9.9HP two-stroke applications where 855721T8 is specified

• Mercury 10HP two-stroke applications where 855721T8 is specified

• Mercury 15HP two-stroke applications where 855721T8 is specified

• Mercury 20HP two-stroke applications where 855721T8 is specified

• Mercury 25HP two-stroke applications where 855721T8 is specified

• Mariner 6HP / 8HP / 9.9HP / 15HP / 20HP / 25HP two-stroke applications using 855721T8

• Mercury / Mariner 2-cylinder XD two-stroke stator systems using 174-5721 replacement family

• HP Range: 6HP - 25HP

• Engine Type: Mercury / Mariner two-cylinder two-stroke outboard

• Year Range: approximately 1997-2005

• System Type: Stator / charging and ignition source coil assembly

🔌 Function

The stator generates electrical output beneath the flywheel. It supplies ignition energy and charging output needed for spark generation and electrical-system operation.

Common signs of failure:

• Weak or missing spark

• Battery not charging where charging circuit is fitted

• Hard starting

• Engine cuts out when warm

• Misfire at higher RPM

• Burnt windings or damaged stator wires

• Cracked insulation or corroded connector

• AC output below specification during testing

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated