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133-3378 is a timer base built for 70 HP Johnson/Evinrude 1979-92 models. Helps restore accurate spark timing on compatible outboard applications.
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Part #: 133-3378
Evinrude70 HPTimer BaseWeight: 2 lb
4.0 / 5  (9 votes)
133-3378 is a timer base built for 70 HP Johnson/Evinrude 1979-92 models. Helps restore accurate spark timing on compatible outboard applications.
List Price: $296.09
Your Price: $269.45
Normally In Stock

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

Replaces OEM#'s

581949, 582724,583060, 583131, 583378, 584269, 584562

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.

Precision pickup circuitry and marine-grade insulated wiring are designed to resist moisture intrusion, corrosion, and continuous engine vibration.

Features

  • Helps maintain accurate ignition advance operation
  • Marine-grade sealed construction
  • Precision ignition timing synchronization
  • Vibration-resistant electronic components

Common Symptoms of a Failing Timer Base

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