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Fits 40 HP 2cyl Mercury/Mariner models with Serial # 5823918 and UP and 4cyl models with Serial # OC159200 thru OG589999 Helps deliver high-voltage spark to the plugs for smooth engine operation: 5186 is an ignition coil. Delivers high-voltage spark to th
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Part #: 5186
Mercury40 HPCoilWeight: 1 lb
4.0 / 5  (10 votes)
Fits 40 HP 2cyl Mercury/Mariner models with Serial # 5823918 and UP and 4cyl models with Serial # OC159200 thru OG589999 Helps deliver high-voltage spark to the plugs for smooth engine operation: 5186 is an ignition coil. Delivers high-voltage spark to th
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

  • Precision-wound insulated copper windings
  • Epoxy-sealed marine-grade construction
  • Designed for harsh marine environments
  • Helps support consistent spark delivery

Common Symptoms of a Failing Ignition Coil

  • Loss of power at higher RPM
  • Rough idle or hesitation
  • Engine misfire under load
  • 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.