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133-3387 is a replacement timer base used on 4 HP Johnson/Evinrude 1977-85, 1989 and 1993-96 models. Used when timing signal problems cause misfire, hard starting, or poor acceleration.
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Part #: 133-3387
Evinrude4 HPTimer BaseWeight: 1 lb
4.0 / 5  (28 votes)
133-3387 is a replacement timer base used on 4 HP Johnson/Evinrude 1977-85, 1989 and 1993-96 models. Used when timing signal problems cause misfire, hard starting, or poor acceleration.
List Price: $87.49
Your Price: $61.40
Normally In Stock

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

Replaces OEM#'s

583387, 584716

Product Details

This timer base assembly is engineered to provide accurate ignition timing synchronization and dependable trigger signal generation throughout the engine's RPM range.

Marine-grade insulation materials and sealed trigger components help protect the timer base from humidity, heat cycling, and electrical interference.

Features

  • Helps maintain accurate ignition advance operation
  • Designed for stable CDI timing signals
  • Supports dependable throttle response
  • Marine-grade sealed construction

Common Symptoms of a Failing Timer Base

  • RPM instability under acceleration
  • Erratic spark timing behavior
  • Intermittent ignition timing issues
  • Hard starting conditions

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.