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133-3387 fits 9.9 HP Johnson/Evinrude 1977-94 models as a timer base. Provides timing input needed for smooth spark advance and engine operation.
Brand or product appearance may vary slightly depending on current inventory.

Part #: 133-3387
Evinrude9.9 HPTimer BaseWeight: 1 lb
3.0 / 5  (24 votes)
133-3387 fits 9.9 HP Johnson/Evinrude 1977-94 models as a timer base. Provides timing input needed for smooth spark advance and engine operation.
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, 585072

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

  • Precision ignition timing synchronization
  • Marine-grade sealed construction
  • Designed for stable CDI timing signals
  • Helps maintain accurate ignition advance operation

Common Symptoms of a Failing Timer Base

  • Ignition timing drift after warm-up
  • Intermittent ignition timing issues
  • Erratic spark timing behavior
  • 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.