Sierra Thunderbolt HEI Distributor - 18-5471

Features:

• Battery Powered (HEI) High Energy Ignition
• Uses a Hall-Effect type sensor to trigger ignition accurately even at extremely low RPM
• Designed as a direct replacement for Mercury Thunderbolt IV Ignition Distributors
• Meets or Exceeds SAE J1171 Standards
• Fits: GM V-6 Engines with Thunderbolt IV & V Ignition

Replaces:

• Mercruiser Stern Drive:
  • 805185A15
  • 805185A27
  • 805185A37
  • 805185A45
  • 805185A5
  • 90747A15
  • 90747A26
  • 90747A28
  • 90747A8