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133-3377 is a timer base built for 235 HP Johnson/Evinrude 1979-85 models. Helps restore accurate spark timing on compatible outboard applications.
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Part #: 133-3377
Evinrude235 HPTimer BaseWeight: 2 lb
4.0 / 5  (35 votes)
133-3377 is a timer base built for 235 HP Johnson/Evinrude 1979-85 models. Helps restore accurate spark timing on compatible outboard applications.
List Price: $387.79
Your Price: $352.90
Normally In Stock

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

Replaces OEM#'s

581985, 582122, 582356, 582357, 582371, 582394, 583129, 583377

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.

The assembly uses sealed electronic components and vibration-resistant construction to help maintain stable ignition timing performance under demanding marine operating conditions.

Features

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

Common Symptoms of a Failing Timer Base

  • Ignition timing drift after warm-up
  • Intermittent ignition timing issues
  • RPM instability under acceleration
  • Erratic spark timing behavior

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.