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5186 is a replacement ignition coil used on 125 HP 4cyl Mercury/Mariner models with Serial # OD283222 thru OG437999 Helps deliver high-voltage spark to the plugs for smooth engine operation. Restores spark energy where the original ignition coil has weak
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Part #: 5186
Mercury125 HPCoilWeight: 1 lb
3.0 / 5  (27 votes)
5186 is a replacement ignition coil used on 125 HP 4cyl Mercury/Mariner models with Serial # OD283222 thru OG437999 Helps deliver high-voltage spark to the plugs for smooth engine operation. Restores spark energy where the original ignition coil has weak
List Price: $87.85
Your Price: $28.95
Normally In Stock

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

Replaces OEM#'s

339-7370A13, 339-832757A4

Product Details

Built for harsh outboard environments, this ignition coil supports clean spark delivery and dependable cylinder firing throughout the engine's operating range.

Marine-grade internal windings and vibration-resistant epoxy encapsulation help protect the coil from heat cycling, humidity, and electrical breakdown.

Features

  • Epoxy-sealed marine-grade construction
  • Precision-wound insulated copper windings
  • High-voltage ignition output design
  • Designed for harsh marine environments

Common Symptoms of a Failing Ignition Coil

  • Hard starting conditions
  • No spark on one cylinder
  • Rough idle or hesitation
  • Weak or intermittent spark

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.