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For 50 HP Johnson/Evinrude 1971-75 models, 133-0875K1 is a timer base. Supports proper ignition advance and reliable cylinder firing.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 133-0875K1
Evinrude50 HPTimer BaseWeight: 2 lb
3.0 / 5  (20 votes)
For 50 HP Johnson/Evinrude 1971-75 models, 133-0875K1 is a timer base. Supports proper ignition advance and reliable cylinder firing.
List Price: $143.59
Your Price: $130.60
Normally In Stock

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

Replaces OEM#'s

385454, 581508, 580875, 581585, 763805

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.

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

Features

  • Supports dependable throttle response
  • Precision ignition timing synchronization
  • Helps maintain accurate ignition advance operation
  • Vibration-resistant electronic components

Common Symptoms of a Failing Timer Base

  • Erratic spark timing behavior
  • RPM instability under acceleration
  • Ignition timing drift after warm-up
  • 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.