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For 85 HP 4cyl Mercury/Mariner 1973-77 models with Serial # 3493913 thru 4831998, 474-9550 is an ignition boat harness. Helps restore reliable operation on compatible marine ignition systems.
Representative image shown. Brand or product appearance may vary slightly depending on current inventory.

Part #: 474-9550
Mercury85 HPBoat harnessWeight: 3 lb
4.0 / 5  (21 votes)
For 85 HP 4cyl Mercury/Mariner 1973-77 models with Serial # 3493913 thru 4831998, 474-9550 is an ignition boat harness. Helps restore reliable operation on compatible marine ignition systems.

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

This boat harness is designed to connect remote controls, gauges, and key-switch circuits to the outboard engine harness for dependable electrical-system integration.

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

Features

  • Color-coded marine-grade wiring
  • Helps simplify installation and wiring identification
  • Supports remote control and gauge integration
  • Matched OEM-style engine harness connectors

Common Symptoms of a Failing Boat Harness

  • Intermittent gauge or control-box operation
  • Unstable engine-to-control-box electrical connectivity
  • Voltage drop caused by deteriorated conductors
  • Ignition-switch or accessory wiring issues

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.