Sierra 18-7684 Marine MAP Sensor for OMC Volvo Penta

The Sierra 18-7684 is a manifold absolute pressure (MAP) sensor designed specifically for marine engine applications. This sensor monitors engine intake manifold pressure and sends vital data to the engine control module, ensuring optimal fuel delivery and engine performance.

Key Features:

• Direct replacement for OMC/Volvo Penta part number 3850396 and MerCruiser part number 864856A1
• Designed for MerCruiser/MIE GM V-6 and V-8 EFI engines including 350, 377, 454, and 502 CID models
• Compatible with throttle body injection (TBI) systems only - does not fit multi-port injected motors
• Manufactured to marine-grade specifications for reliable performance in harsh saltwater and freshwater environments
• Limited lifetime warranty coverage

Engine Compatibility:

• 4.3L TBI (1996-1998)
• 5.0L TBI (1998)
• 5.7L TBI (1996-1998)
• 7.4L (1995-1998)
• 8.2L (1998)

Sierra Marine is a trusted name in aftermarket marine engine parts, providing OEM-quality replacement components for boat engines. This MAP sensor helps maintain proper air-fuel mixture and engine timing for smooth operation and fuel efficiency.