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500 EFI (470-hp)

Brief Summary

Mercury Racing sterndrives continue to lead the marine industry with precision craftsmanship combined with state-of-the-art technology, durability and reliability. The 500 EFI is the introduction to the big block racing machines for MerCruiser. It's used in APBA offshore racing as well as consumer boats.

Key Features

  • Precision CNC machined 502 C.I.D. cast iron cylinder block.
  • Forged 4340 steel, fully machined and shot-peened Mercury Racing connecting rods.
  • MEFI 3 ignition system precisely controls both idle speed and detonation.
  • Multiport fuel injection system incorporates a high-flow throttle body and tuned intake manifold developed exclusively by Mercury Racing.
  • The oil thermostat and a Positive Crankcase Ventilation (PCV) valve work together to reduce the buildup of condensation in the oil. The PCV valve also
  • A hydraulic roller camshaft, which improves low-end torque, offers higher level of performance and aids fuel economy.
  • Standard with 1.36:1 or 1.50:1 gear ratio Bravo One XZ drive in either right-hand or left-hand rotation.
  • Bravo One XR, Bravo One XR Sport Master, Bravo One Short Sport Master and Dry-Sump Six drive options available.
  • Dual-water pickup and low-water pickup gearcase housings for Bravo One XZ and Bravo One XR drives.


Type of Engine
Number of Cylinders 8
Horse Power 470
Configuration V-8
Weight 1113.00lbs
Fuel Type Gasoline
Fuel Delivery
Shaft Length Options
Shift Throttle Control
Displacement 502.00cu in
Steering Control
Recommended Fuel
Alternator Output 60 amp
CARB Rating
Engine Monitoring System

Captain's Report