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114-7778 is an ignition switch box built for 75 HP 3cyl Mercury/Mariner 1987-93 models with Serial # OA996142 thru OD283221. Manages spark timing and ignition output for dependable engine operation.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 114-7778
Mercury75 HPSwitch BoxWeight: 2 lb
4.0 / 5  (17 votes)
114-7778 is an ignition switch box built for 75 HP 3cyl Mercury/Mariner 1987-93 models with Serial # OA996142 thru OD283221. Manages spark timing and ignition output for dependable engine operation.
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

Built for harsh marine environments, this ignition module supports consistent spark output, smoother acceleration, and dependable high-RPM ignition operation.

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

Features

  • Vibration-resistant internal circuitry
  • Marine-grade sealed electronic construction
  • Designed for stable spark sequencing
  • High-energy CDI ignition switching design

Common Symptoms of a Failing Switch Box

  • Sudden ignition failure after warm-up
  • Intermittent spark or ignition drop-out
  • Engine misfire under acceleration
  • Random cylinder firing issues

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.