Sierra 118-1800 Oil Reservoir Float Switch for Mercury EFI 2-Stroke Outboards

The Sierra 118-1800 Oil Reservoir Float Switch is a quality replacement float switch designed for Mercury Marine EFI 2-stroke outboard engines equipped with an engine-mounted oil reservoir. This switch monitors oil levels within the reservoir and signals pumps, alarms, or indicator systems to help prevent oil starvation and engine damage.

Key Features:

• Direct replacement for Mercury Marine oil reservoir float switches
• Designed for Mercury 30–250 HP EFI 2-Stroke Outboards with engine-mounted oil reservoir
• Monitors oil levels to protect against low-oil conditions
• Built to OEM specifications for reliable, drop-in fitment

Replaces Mercury Marine OEM Part Numbers:

• 87-12886A2
• 87-12886A3
• 87-12886A5
• 87-12886A6

Cross References: SIE 1800, 44-8116, 4989-3801, 49893801

Sierra International is a trusted manufacturer of marine replacement parts, offering OEM-quality components at an aftermarket value. The 118-1800 float switch is a straightforward, cost-effective solution for maintaining proper oil level monitoring on compatible Mercury outboard engines.