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5186 is an ignition coil for 25 HP Mercury/Mariner models with Serial # 5705532 thru OG760299. Helps deliver high-voltage spark to the plugs for smooth engine operation. Delivers high-voltage spark to the plug for reliable combustion.
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Part #: 5186
Mercury25 HPCoilWeight: 1 lb
4.0 / 5  (10 votes)
5186 is an ignition coil for 25 HP Mercury/Mariner models with Serial # 5705532 thru OG760299. Helps deliver high-voltage spark to the plugs for smooth engine operation. Delivers high-voltage spark to the plug for reliable combustion.
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.

Precision-wound secondary windings and sealed construction are designed to maintain ignition stability while operating in high-humidity marine conditions.

Features

  • Helps support consistent spark delivery
  • Helps reduce intermittent ignition misfire
  • High-voltage ignition output design
  • Precision-wound insulated copper windings

Common Symptoms of a Failing Ignition Coil

  • Engine misfire under load
  • Weak or intermittent spark
  • Loss of power at higher RPM
  • No spark on one cylinder

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.