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134-3736 is a replacement ignition trigger used on 140 HP 6cyl Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5314655. Restores the signal path needed for accurate cylinder firing.
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Part #: 134-3736
Mercury140 HPTriggerWeight: 1 lb
3.0 / 5  (21 votes)
134-3736 is a replacement ignition trigger used on 140 HP 6cyl Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5314655. Restores the signal path needed for accurate cylinder firing.
List Price: $671.99
Your Price: $611.55
Normally In Stock

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

Replaces OEM#'s

332-4177A3, 393-3736A3, 393-3736A23, 393-3736A77, 393-3736A79

Product Details

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

Precision magnetic pickup components and sealed marine-grade construction help resist moisture intrusion, corrosion, and damaging engine vibration.

Features

  • Supports accurate CDI timing events
  • Marine-grade sealed construction
  • Precision ignition timing signal generation
  • Vibration-resistant electronic components

Common Symptoms of a Failing Trigger

  • Ignition timing drift after warm-up
  • Intermittent ignition timing problems
  • Hard starting conditions
  • 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.