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Fits 140 HP Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5625107: 474-9550 is an ignition boat harness. Used to replace worn or failed ignition components in outboard service.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 474-9550
Mercury140 HPBoat harnessWeight: 3 lb
3.0 / 5  (11 votes)
Fits 140 HP Mercury/Mariner 1972 models with Serial # 3293234 thru 3502805 and 1978-79 models with Serial # 4855153 thru 5625107: 474-9550 is an ignition boat harness. Used to replace worn or failed ignition components in outboard service.

Notes:

20' harness length and includes 6' battery lead.

List Price: $362.69
Your Price: $330.05
Normally In Stock

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

Replaces OEM#'s

84-822253T20

Product Details

Built for reliable marine electrical-system operation, this boat harness supports dependable signal transfer between the engine harness, control box, ignition switch, and gauges.

OEM-style connector layouts and matched wire colors help support plug-and-play style integration with compatible engine harness assemblies.

Features

  • Marine-grade insulated conductors
  • Color-coded marine-grade wiring
  • Matched OEM-style engine harness connectors
  • Designed for dependable marine electrical-system connectivity

Common Symptoms of a Failing Boat Harness

  • Unstable engine-to-control-box electrical connectivity
  • Voltage drop caused by deteriorated conductors
  • Corroded or damaged harness connectors
  • Intermittent gauge or control-box operation

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.