Gates 34227 Engine Coolant Thermostat

OE Type Thermostat for Precise Cooling Control

Gates 34227 is an OE Type Engine Coolant Thermostat built for accurate temperature regulation and an OEM-equivalent fit. It is a direct replacement for select 2012-2014 Lincoln Mark LT applications, including 180 degree alternate-temperature service use where specified.

Gates OE Type Thermostat components are built around the brand’s OE-style cooling focus, with materials and dimensions selected to match factory-style installation and sealing requirements. For Lincoln Mark LT cooling system service, 34227 helps restore proper thermostat operation without changing the original system design.

Key Features

• OE Type Engine Coolant Thermostat for factory-style replacement
• Start to open temperature: 180°F / 82°C
• Bottom by-pass design for the listed application
• Stainless steel, copper, brass, and steel construction details
• Jiggle pin weep hole included for air bleeding during service
• OE Performance comparison rating
• Gates part number 34227

Detailed Product Overview

This thermostat is engineered to provide precise coolant flow control as engine temperature rises, helping the cooling system reach and maintain the intended operating range. The OE Type design supports a leak-free, OEM-equivalent fit, while the bottom by-pass configuration and listed flange dimensions help match the original housing setup. If you are replacing a thermostat on a 2012-2014 Lincoln Mark LT, Gates 34227 offers a direct-fit cooling system service part with the correct opening temperature for the application.

This part cross-references Four Seasons 39228 for the same application.

What This Thermostat Helps Address

• Engine running too cool or too hot due to thermostat wear
• Delayed warm-up after cold starts
• Temperature fluctuation during normal driving
• Coolant flow issues caused by a sticking thermostat
• Cooling system service on a 2012-2014 Lincoln Mark LT

Installation Notes and Tips

Install with the cooling system fully drained and the mating surfaces cleaned before assembly. Verify the thermostat orientation matches the bottom by-pass design and confirm the housing and flange dimensions before reassembly. Because no installation tool is included, use standard cooling system service tools and follow the vehicle service procedure for bleeding air from the system through the jiggle pin weep hole.

Fits 2012-2014 Lincoln Mark LT, N/A. Fits 2012-2014 Lincoln Mark LT, N/A, 180 Degree; Alternate Temperature; For Off-Road Use Only; OE Type Thermostat.

Quality Assurance

Gates designs OE Type Thermostats to deliver precise temperature control and an OEM-equivalent fit for the listed application. Part number 34227 is built to support consistent cooling system service on the specified Lincoln Mark LT vehicles.