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133-3387 is a timer base built for 20 HP Johnson/Evinrude 1977-2005 models. Supports proper ignition advance and reliable cylinder firing.
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Part #: 133-3387
Evinrude20 HPTimer BaseWeight: 1 lb
4.0 / 5  (25 votes)
133-3387 is a timer base built for 20 HP Johnson/Evinrude 1977-2005 models. Supports proper ignition advance and reliable cylinder firing.
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

  • Designed for stable CDI timing signals
  • Precision ignition timing synchronization
  • Supports dependable throttle response
  • Marine-grade sealed construction

Common Symptoms of a Failing Timer Base

  • Intermittent ignition timing issues
  • RPM instability under acceleration
  • Hard starting conditions
  • Ignition timing drift after warm-up

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.