Thermostat Housing Kit – M20


Each Kit

Choose Temperature * 

Category: SKU: M20ThKT Tag:

Product Description

Complete Thermostat Kit for your M20 engine. For those looking to go through their cooling system, this is a nice addition. Rather than just putting a new thermostat into an old corroded (often poor sealing) housing, just replace the whole unit.


-Thermostat Housing

-Thermostat *Choose Temp.

-Housing Cap

-Correct Hardware and Plugs

-Bleeder Screw


Installation Note: Upon installation/cooling system overhaul, be sure to bleed the coolant system. Many people (and shops unfamiliar with BMW’s) will skip this step, resulting in sustained high temperatures and a bubbling sound. To bleed the system, back out the bleeder screw on top of housing to let the trapped air out. Once coolant begins to come out, re-tighten the bleeder screw. Installation is as per your workshop manual.

Installation Note 2: Be sure the line up the arrow stamped on the thermostat with the bleeder hole on the housing.

Fits the following M20-equipped cars:

1984-92 E30 – 325e, 325i

1983-88 E28 – 528e

1989-90 E34 – 525i


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