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174-3996 is an ignition stator for 20 HP (200) Mercury/Mariner 1970-71 models with Serial # 2827677 thru 3226957. Helps restore spark when the original stator output becomes weak or unstable.
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Part #: 174-3996
Mercury20 HPStatorWeight: 4 lb
4.0 / 5  (28 votes)
174-3996 is an ignition stator for 20 HP (200) Mercury/Mariner 1970-71 models with Serial # 2827677 thru 3226957. Helps restore spark when the original stator output becomes weak or unstable.
List Price: $697.29
Your Price: $543.80
Normally In Stock

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

Replaces OEM#'s

336-3962A4, 336-3996A4, 339-3996A7

Product Details

The stator acts as the electrical foundation of the ignition system, producing the current needed to feed the ignition module and support consistent firing. The design priorities are especially important on Mercury/Mariner applications where ignition stability depends on clean stator output.

Design & Materials

  • Epoxy encapsulation helps shield internal windings from moisture, vibration, and corrosion.
  • Laminated core sections help concentrate magnetic flux from the flywheel magnets for reliable electrical production.
  • Marine-grade lead wires and molded connectors help maintain dependable contact in a high-vibration environment.
  • High-temperature insulation helps protect the windings from heat cycling inside the engine cowling.

Operating Features

  • Designed to maintain stable voltage as engine load and RPM change.
  • Helps restore ignition charge voltage for strong, repeatable spark output.
  • Supports smooth acceleration by helping the ignition system maintain consistent energy.
  • Designed for use in wet, hot, and vibration-heavy marine engine compartments.

Failure Symptoms to Check

  • No-start conditions
  • Poor acceleration caused by weak ignition energy
  • Random cylinder drop-out
  • Charging output problems where the stator also supports charging circuits
  • Hard starting

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.