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134-4313S fits 90 HP 6cyl Mercury/Mariner 1978-79 models with Serial # 4845301 thru 5299505 as an ignition trigger disc. Supports consistent spark timing on compatible 2-stroke outboards.
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Part #: 134-4313S
Mercury90 HPTrigger DiscWeight: 1 lb
4.0 / 5  (5 votes)
134-4313S fits 90 HP 6cyl Mercury/Mariner 1978-79 models with Serial # 4845301 thru 5299505 as an ignition trigger disc. Supports consistent spark timing on compatible 2-stroke outboards.
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

Designed for reliable ignition synchronization, this marine trigger helps coordinate spark timing events across the engine's RPM range.

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

Features

  • Helps support dependable throttle response
  • Vibration-resistant electronic components
  • Precision ignition timing signal generation
  • Supports accurate CDI timing events

Common Symptoms of a Failing Trigger

  • Hard starting conditions
  • RPM instability under load
  • Ignition timing drift after warm-up
  • Loss of spark synchronization

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.