Mercury Low Oil Switch Assembly

$53.19

Genuine Mercury low oil switch assembly designed to monitor oil levels and activate the oil warning system when low oil conditions occur. Helps protect Mercury engines from lubrication-related damage.

Compatible With:

  • Mercury Oil-Injected TwoStroke Outboards
  • Mercury EFI TwoStroke Outboards
  • Mercury Optimax Outboards
  • Mercury SeaPro TwoStroke Models
  • Mercury Marathon Models
  • Selected Mercury Outboards equipped with oil alert systems
  • Selected Mariner oil-injected outboards requiring part number 856156T04

The Mercury Marine 856156T04 Low Oil Switch Assembly is a genuine Mercury OEM oil warning system component designed to monitor oil levels within Mercury oil injection systems and activate the low-oil warning circuit when oil levels fall below the specified operating range. This critical safety component helps protect the engine from lubrication-related damage by providing an early warning before oil starvation can occur.

The switch assembly features a durable resin-encapsulated design that protects the internal electrical components from moisture, vibration and corrosion commonly encountered in marine environments. Designed to integrate directly with Mercury oil alert systems, it provides reliable operation and dependable warning functionality under demanding operating conditions.

A faulty low-oil switch can result in false warning alarms, intermittent alarm operation or failure to provide a low-oil warning when required. Replacing a defective switch helps maintain the integrity of the engine protection system and ensures the operator receives accurate oil level warnings.

Manufactured to Mercury Marine specifications, the 856156T04 switch is designed as a direct OEM replacement and is commonly used on a range of Mercury outboards equipped with oil injection and oil alert systems.