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114-2986 is an ignition switch box for 140 HP Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5314655. Manages spark timing and ignition output for dependable engine operation.
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Part #: 114-2986
Mercury140 HPSwitch BoxWeight: 2 lb
3.0 / 5  (18 votes)
114-2986 is an ignition switch box for 140 HP Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5314655. Manages spark timing and ignition output for dependable engine operation.

Notes:

New design includes new coil. No tach output.

List Price: $447.69
Your Price: $407.40
Normally In Stock

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

Replaces OEM#'s

332-2986A3, 332-2986A4, 332-2986A5, 332-2986A7, 332-2986A8, 332-2986A9, 332-2986A10, 332-2986A17, 332-2986A21, 332-2986A22, 332-2986A23, 332-2986A24, 332-2986A25, 332-2986A27

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.

Sealed marine-grade circuitry and vibration-resistant epoxy encapsulation help protect the switch box from moisture intrusion, corrosion, and damaging engine vibration.

Features

  • Marine-grade sealed electronic construction
  • Designed for stable spark sequencing
  • Helps maintain reliable spark delivery under load
  • High-energy CDI ignition switching design

Common Symptoms of a Failing Switch Box

  • Loss of top-end RPM
  • Random cylinder firing issues
  • Intermittent spark or ignition drop-out
  • Engine misfire under acceleration

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.