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114-7778 is an ignition switch box for 115 HP 6cyl Mercury/Mariner 1979-89 models with Serial # 5314656 thru OC100000. Used to replace aging switch boxes that can cause poor spark or rough running.
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Part #: 114-7778
Mercury115 HPSwitch BoxWeight: 2 lb
4.0 / 5  (7 votes)
114-7778 is an ignition switch box for 115 HP 6cyl Mercury/Mariner 1979-89 models with Serial # 5314656 thru OC100000. Used to replace aging switch boxes that can cause poor spark or rough running.
List Price: $274.99
Your Price: $120.10
Normally In Stock

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

Replaces OEM#'s

332-5524, 332-7778, 332-7778A1, 332-7778A3, 332-7778A5, 332-7778A6, 332-7778A9, 332-7778A12

Product Details

This switch box is engineered to manage CDI ignition timing and spark sequencing for dependable ignition performance throughout the engine's operating range.

Heavy-duty electronic components and insulated internal circuitry are designed to withstand heat cycling, humidity, and harsh outboard operating conditions.

Features

  • Designed for stable spark sequencing
  • Marine-grade sealed electronic construction
  • Helps maintain reliable spark delivery under load
  • Vibration-resistant internal circuitry

Common Symptoms of a Failing Switch Box

  • Loss of top-end RPM
  • Engine misfire under acceleration
  • Hard starting conditions
  • Intermittent spark or ignition drop-out

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.