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133-3387 is a replacement timer base used on 50 HP Johnson/Evinrude 1979-99 models. Helps control ignition timing and cylinder firing position.
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Part #: 133-3387
Evinrude50 HPTimer BaseWeight: 1 lb
3.0 / 5  (6 votes)
133-3387 is a replacement timer base used on 50 HP Johnson/Evinrude 1979-99 models. Helps control ignition timing and cylinder firing position.
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

Designed for reliable spark timing control, this marine timer base helps coordinate ignition advance events for smoother throttle response and stable engine performance.

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
  • Supports dependable throttle response
  • Precision ignition timing synchronization
  • Vibration-resistant electronic components

Common Symptoms of a Failing Timer Base

  • Ignition timing drift after warm-up
  • Erratic spark timing behavior
  • Engine hesitation or misfire
  • RPM instability under acceleration

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.