Mercury – Quicksilver Thermostat | Cooling System Part | 143°F V6 2-Stroke Outboards | 75692

Overview

A thermostat that works properly keeps your outboard in its sweet spot—warm enough to run efficiently but cool enough to last. The Mercury Marine 75692 Quicksilver Thermostat is built for Mercury and Mariner 135-200 HP V6 two-stroke outboards, both EFI and carbureted models. Calibrated to open at 143 °F, it keeps temperature steady and fuel use efficient. Its self-cleaning valve sheds mineral deposits each time it cycles, keeping the cooling system clear. It’s a simple, factory-fit part that helps your engine stay healthy trip after trip.

Key Features

• Purpose: Regulates coolant flow to hold the engine near its ideal temperature.
• Rating: Opens at 143 °F for balanced warm-up and cooling.
• Design: Self-cleaning valve clears out scale and debris automatically.
• Material: Built from marine-grade metals that resist rust and corrosion.
• Performance: Promotes faster warm-up, steady operation, and protection against overheating.
• Ease of Service: Direct OEM fit—installs easily with basic tools (gaskets sold separately).

Engine & Boat Compatibility

• Mercury 135 HP V6 2-stroke EFI & carbureted outboards
• Mercury 150 HP V6 2-stroke EFI & carbureted outboards
• Mercury 175 HP V6 2-stroke EFI & carbureted outboards
• Mercury 200 HP V6 2-stroke EFI & carbureted outboards
• Mariner 135-200 HP V6 2-stroke EFI & carbureted outboards

Performance & Real-World Benefits

The 75692 thermostat helps your motor reach and maintain the right temperature so it runs cleaner and more efficiently. Its self-cleaning action keeps minerals and debris from building up, which means steadier temperatures and fewer cooling-system clogs. Replacing an old or sticky thermostat brings back predictable engine temps and smooth running, especially in saltwater use.

Why Choose Mercury OEM

The Quicksilver 75692 is a genuine Mercury Marine thermostat, made to the same specs used on new engines. Aftermarket versions often open at the wrong temperature or corrode quickly. Mercury’s OEM design is factory-tested for marine heat cycles, vibration, and water exposure—so it lasts longer and performs the way your engine expects.

FAQ

Q1: What engines does it fit?
Fits Mercury and Mariner 135-200 HP V6 two-stroke EFI and carbureted outboards.

Q2: What temperature does it open at?
It’s rated for 143 °F operation.

Q3: Does it include seals?
No—order seals or gaskets separately if required.

Q4: How does the self-cleaning design help?
Each cycle flushes away small bits of scale and debris, extending thermostat life.

Q5: Why OEM instead of aftermarket?
OEM thermostats match factory calibration and materials, ensuring proper cooling and longer service life.