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174-8778K1 is an ignition stator for 75 HP 3cyl Mercury/Mariner 1987-93 models with Serial # OA996142 thru OD283221. Generates ignition voltage needed for consistent spark delivery.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 174-8778K1
Mercury75 HPStatorWeight: 4 lb
4.0 / 5  (14 votes)
174-8778K1 is an ignition stator for 75 HP 3cyl Mercury/Mariner 1987-93 models with Serial # OA996142 thru OD283221. Generates ignition voltage needed for consistent spark delivery.

Notes:

Models with 9amp charging system. Not for use with flywheels having bolted in magnets. Compatible with voltage regulator or rectifier.

List Price: $491.49
Your Price: $473.65
Normally In Stock

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

Replaces OEM#'s

398-8778A6, 398-8778A10, 398-8778A16, 398-8778A17, 398-8778A18, 398-8778A21, 398-8778A22, 398-8778A23, 398-8778A24, 398-8778A25, 398-8778A26, 398-8778A27, 398-8778A28, 398-8778A29, 398-818535A3, 398-818535A5, 398-818535A8, 398-818535A9, 398-818535A10, 398-818535A13, 398-818535A14

Product Details

This marine stator assembly is engineered to generate the electrical energy needed for dependable CDI ignition performance across changing engine speeds. The design priorities are especially important on Mercury/Mariner applications where ignition stability depends on clean stator output.

Design & Materials

  • The stator body is designed to maintain proper coil alignment under continuous flywheel rotation.
  • Heavy-duty winding insulation helps prevent shorting between coil layers during extended operation.
  • The coil assembly is built to resist breakdown from heat, oil mist, humidity, and repeated thermal expansion.
  • Marine-grade lead wires and molded connectors help maintain dependable contact in a high-vibration environment.

Ignition System Benefits

  • Helps the ignition system recover from weak output, hard starting, and cylinder drop-out symptoms.
  • Provides a dependable electrical source for the ignition system under real-world boating conditions.
  • Engineered to meet OEM-style electrical output characteristics.
  • Helps correct intermittent spark loss caused by heat-sensitive stator windings.

Common Symptoms of Stator Failure

  • Poor acceleration caused by weak ignition energy
  • Charging output problems where the stator also supports charging circuits
  • Weak or intermittent spark
  • Unstable ignition output
  • Spark loss after warm-up

Because stator failure can mimic other ignition problems, testing the trigger, coils, switch box or power pack, and related grounds is recommended.

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.