Description
Quicksilver 8M0174561 140°F Thermostat Housing
The Quicksilver 8M0174561 is a high-performance 140°F replacement thermostat housing engineered for select Mercury 4-stroke Verado outboards. Constructed from a corrosion-resistant, high-temperature molded composite material, this housing is designed to provide an increased service life compared to standard components. It features an integrated 90-degree bend on the outflow side and houses an internal stainless steel thermostat to maintain precise engine temperature regulation.
Applications
- Engine Compatibility: Fits 135-175hp L4, 200-400hp L6, and 400R L6 Mercury FourStroke outboards.
- Model Specifics: Optimized for select Mercury Verado engine configurations.
- Direct Replacement: Replaces previous part number 892864T04.
Shipping & Returns
In-stock thermostat components ship quickly to ensure your cooling system is restored to factory specifications. For our full return policy, please visit /policies/refund-policy.
Key Facts
Brand: Quicksilver
Part ID: 8M0174561
Temperature Rating: 140°F (60°C)
Material: High-Temperature Molded Composite
UPC: 745061633704
What’s Included
Housing: (1) 140°F Thermostat housing with 90-degree bend
Thermostat: (1) Internal stainless steel thermostat (Pre-installed)
Service Notes
This unit includes the housing and internal thermostat only. To ensure a leak-free installation and proper cooling system function, it is highly recommended to replace all associated housing seals, gaskets, and clamps at the time of service. These attaching hardware items are sold separately.
Frequently Asked Questions
Does this fit the newer V8 or V6 Mercury outboards?
This specific housing is designed for the L4 and L6 Verado platforms; newer V6/V8 models typically utilize a different thermostat configuration.
Is the thermostat removable from the housing?
The thermostat is housed internally within the composite body; if the thermostat fails, the complete assembly 8M0174561 is generally replaced to ensure seal integrity.
Why is the housing made of composite instead of aluminum?
The specialized composite material is utilized for its superior resistance to salt-water corrosion and its ability to withstand high thermal cycles without warping.