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Fits 40 HP 2cyl Mercury/Mariner 1970-71 models with Serial # 2874704 thru 3336237: 174-4424 is an ignition stator. Supports steady ignition voltage during starting and running conditions.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 174-4424
Mercury40 HPStatorWeight: 4 lb
4.0 / 5  (7 votes)
Fits 40 HP 2cyl Mercury/Mariner 1970-71 models with Serial # 2874704 thru 3336237: 174-4424 is an ignition stator. Supports steady ignition voltage during starting and running conditions.

Notes:

Includes 154-6770 rectifier.

List Price: $308.09
Your Price: $296.95
Normally In Stock

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

Replaces OEM#'s

398-3873, 398-3663, 398-4204, 398-4423, 398-4424

Product Details

This replacement stator is designed to support stable ignition output by converting flywheel rotation into controlled electrical energy for the ignition circuit. 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.
  • Precision-wound copper coils are used to promote efficient voltage generation and stable output.
  • The coil assembly is built to resist breakdown from heat, oil mist, humidity, and repeated thermal expansion.
  • Laminated core sections help concentrate magnetic flux from the flywheel magnets for reliable electrical production.

Performance Features

  • 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 the ignition system recover from weak output, hard starting, and cylinder drop-out symptoms.
  • Helps reduce high-RPM breakup caused by weak or unstable stator output.

Common Symptoms of Stator Failure

  • Poor acceleration caused by weak ignition energy
  • Weak or intermittent spark
  • Charging output problems where the stator also supports charging circuits
  • Random cylinder drop-out
  • Unstable ignition output

Clean grounds, sound connectors, and correct flywheel condition are important for reliable stator performance after replacement.

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.