FAST SHIPPING
On Orders Over $99
EXPERT SUPPORT
⌕ TRACK ORDER 🛒 CART (0)

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.
133-3387 fits 28 HP Johnson/Evinrude 1985-96 models as a timer base. Used when timing signal problems cause misfire, hard starting, or poor acceleration.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 133-3387
Evinrude28 HPTimer BaseWeight: 1 lb
4.0 / 5  (31 votes)
133-3387 fits 28 HP Johnson/Evinrude 1985-96 models as a timer base. Used when timing signal problems cause misfire, hard starting, or poor acceleration.
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

This timer base assembly is engineered to provide accurate ignition timing synchronization and dependable trigger signal generation throughout the engine's RPM range.

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

Features

  • Marine-grade sealed construction
  • Supports dependable throttle response
  • Designed for stable CDI timing signals
  • Vibration-resistant electronic components

Common Symptoms of a Failing Timer Base

  • Erratic spark timing behavior
  • RPM instability under acceleration
  • Hard starting conditions
  • Engine hesitation or misfire

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.