A-Premium Mini Cooper Thermostat & Housing Assembly with 2-Pin Sensors — 221°F Open, Complete Mounting Kit (2007–2013)

The A-Premium thermostat and housing assembly is a complete replacement unit for compatible Mini Cooper engines, including integrated 2-pin temperature sensors, mounting hardware, and an O-ring for a ready-to-install solution.

This fully assembled cooling component replaces the thermostat housing on select Mini Cooper and Countryman models from 2007 through early 2013. Built to match OE fitment references and to simplify installation, the kit bundles the thermostat calibrated to open at 221°F, the housing with its sensors, bolts, clips and sealing O-ring so you can restore proper coolant flow and temperature sensing without sourcing multiple parts.

How does this assembly match my Mini Cooper’s original equipment?

The unit is designed to align with factory mounting points and sensor connections used on Mini engines designated N12B16, N14B16, N16B16A and related variants. It lists several OEM reference numbers so you can cross-check compatibility with your vehicle’s part history.

• Compatible models: Mini Cooper (2007–2013) and Countryman (2011–2013, to 1/31/13)
• Engine designations covered: N12B16, N14B16, N16B16A and variants
• OEM reference numbers included for verification: 11537534521, 11538699290, SK902812, and others
• May require harness 12517646145 if vehicle built prior to March 2012

What components come in the kit and what are the key specifications?

This assembly arrives complete with the thermostat, two temperature sensors (each 2-pin), the thermostat housing, mounting bolts and clips, and a replacement O-ring. The thermostat is specified to open at approximately 221°F, and the housing flange dimensions let you confirm physical fit before installation.

• Included sensors: Temperature sensor (2-pin) and housing sensor (2-pin)
• Mounting: 3 mounting holes with included bolts and clips
• Seal: New O-ring supplied to prevent leaks
• Thermostat opening temperature: 221°F
• Flange size: 4.375 in length × 0.9 in thickness × 3.25 in width

How will installing this assembly affect vehicle maintenance and diagnostics?

Replacing the thermostat housing with this complete assembly restores correct coolant routing and provides fresh temperature sensors for accurate engine temperature readings. Because the sensors are included and match OE-style two-pin connectors, diagnostic errors related to sensor faults or corroded connectors are less likely after installation.

• Reduces risk of leaks by replacing the housing and O-ring together
• Improves temperature signal reliability with new 2-pin sensors
• Helps avoid aftermarket sensor mismatch because connectors match factory types
• Streamlines repair time by supplying bolts and clips with the part

Who is this for: This A-Premium thermostat housing assembly is intended for DIY mechanics and professional technicians working on compatible Mini Cooper and Countryman models who want a complete, ready-to-install replacement that mirrors OE fit and function. It’s useful for owners addressing thermostat failures, coolant leaks at the housing, or intermittent engine temperature sensor codes, and for anyone who prefers replacing the housing and sensors together to minimize repeat labor.