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134-3960-2 is an ignition trigger for 40 HP 2cyl Mercury/Mariner 2000-05 models with Serial # OG590000 thru OT999999. Helps restore proper timing input for smooth engine operation.
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Part #: 134-3960-2
Mercury40 HPTriggerWeight: 1 lb
4.0 / 5  (6 votes)
134-3960-2 is an ignition trigger for 40 HP 2cyl Mercury/Mariner 2000-05 models with Serial # OG590000 thru OT999999. Helps restore proper timing input for smooth engine operation.
List Price: $148.69
Your Price: $135.30
Normally In Stock

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

Replaces OEM#'s

853960T, 855747A1

Product Details

This trigger assembly is engineered to provide accurate ignition timing signals for dependable spark sequencing and throttle response.

The assembly uses vibration-resistant electronic components and insulated signal wiring designed for dependable timing performance in marine applications.

Features

  • Marine-grade sealed construction
  • Supports accurate CDI timing events
  • Designed for stable spark synchronization
  • Precision ignition timing signal generation

Common Symptoms of a Failing Trigger

  • Intermittent ignition timing problems
  • Hard starting conditions
  • Ignition timing drift after warm-up
  • RPM instability under load

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.