Skip to content Skip to navigation menu

Tune-Up Kit


Model # 4538740 | Mfg # 5090Q1
In stock online.

Mercury Marine 391-5090Q-1 Tune-Up Kit

  • Fits Ford & GM V-8 Engines with Mallory Ignition.
  • See application chart for specific models.

Tune-Up Kit

Compatibility Ford & GM V8/Mallory
Type Tune Up Kits

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.