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134-4313S is an ignition trigger disc built for 140 HP 6cyl Mercury/Mariner 1972-79 models with Serial # 3293234 thru 5314655. Provides the timing signal needed for accurate spark delivery.
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Part #: 134-4313S
Mercury140 HPTrigger DiscWeight: 1 lb
3.0 / 5  (5 votes)
134-4313S is an ignition trigger disc built for 140 HP 6cyl Mercury/Mariner 1972-79 models with Serial # 3293234 thru 5314655. Provides the timing signal needed for accurate spark delivery.
List Price: $38.89
Your Price: $26.20
Normally In Stock

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

Replaces OEM#'s

N/A

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

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

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.