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5186 is a replacement ignition coil used on 100 HP 4cyl Mercury/Mariner models with Serial # 6437999 thru OB209468 Helps deliver high-voltage spark to the plugs for smooth engine operation. Helps correct weak spark, misfire, or hard-starting conditions.
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Part #: 5186
Mercury100 HPCoilWeight: 1 lb
4.0 / 5  (30 votes)
5186 is a replacement ignition coil used on 100 HP 4cyl Mercury/Mariner models with Serial # 6437999 thru OB209468 Helps deliver high-voltage spark to the plugs for smooth engine operation. Helps correct weak spark, misfire, or hard-starting conditions.
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

Designed for dependable ignition performance, this marine ignition coil helps transfer consistent spark energy for reliable combustion and throttle response.

The assembly uses heavy-duty insulated copper windings and an epoxy-filled housing to help resist moisture intrusion, corrosion, and damaging engine vibration.

Features

  • Epoxy-sealed marine-grade construction
  • Designed for harsh marine environments
  • Precision-wound insulated copper windings
  • Helps reduce intermittent ignition misfire

Common Symptoms of a Failing Ignition Coil

  • Weak or intermittent spark
  • Engine misfire under load
  • 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.