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174-2387 is an ignition stator for 40 HP electric start 4 stroke 3 and 4cyl Mercury/Mariner 2002-05 models with Serial # OT178500 thru OT598999. Helps restore spark when the original stator output becomes weak or unstable.
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Part #: 174-2387
Mercury40 HPStatorWeight: 4 lb
4.0 / 5  (11 votes)
174-2387 is an ignition stator for 40 HP electric start 4 stroke 3 and 4cyl Mercury/Mariner 2002-05 models with Serial # OT178500 thru OT598999. Helps restore spark when the original stator output becomes weak or unstable.
List Price: $322.29
Your Price: $292.85
Normally In Stock

In Stock items ship same day if ordered before 3PM CST (excluding weekends and holidays)

Replaces OEM#'s

398-852387A4, 398-852387T7

Product Details

This stator assembly is built to help the ignition system maintain clean spark delivery by supplying consistent electrical output as the flywheel rotates. The design priorities are especially important on Mercury/Mariner applications where ignition stability depends on clean stator output.

Construction Details

  • High-temperature insulation helps protect the windings from heat cycling inside the engine cowling.
  • Epoxy encapsulation helps shield internal windings from moisture, vibration, and corrosion.
  • Sealed construction helps reduce moisture intrusion that can lead to weak spark or no-spark conditions.
  • Laminated core sections help concentrate magnetic flux from the flywheel magnets for reliable electrical production.

Performance Features

  • Helps the ignition system recover from weak output, hard starting, and cylinder drop-out symptoms.
  • Supports smooth acceleration by helping the ignition system maintain consistent energy.
  • Provides a dependable electrical source for the ignition system under real-world boating conditions.
  • Helps reduce high-RPM breakup caused by weak or unstable stator output.

Common Ignition Symptoms

  • Weak or intermittent spark
  • Hard starting
  • Spark loss after warm-up
  • Engine misfire under load
  • Random cylinder drop-out

A stator should be diagnosed as part of the complete ignition system so related components are not overlooked.

Need Fitment Help?

Tell us your brand, horsepower, and part number. We can help verify fitment before you order.

Support PDF files appear on this page when available.