Motorad 1032-221 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for Volkswagen Passat

The Motorad Integrated Housing Thermostat, part number 1032-221, is built for 2002-2004 Volkswagen Passat applications that require a 221°F thermostat housing assembly. It combines the thermostat, housing, sensor, and seal in one OE-style service part for direct cooling system replacement.

Motorad’s Integrated Housing Thermostat line focuses on OE supplier construction and factory-style fitment for modern cooling systems. This 1032-221 assembly uses OEM-spec materials and includes an offset design, air relief valve, bleeder hole, and jiggle pin for proper coolant flow and air management.

Key Features

• Fits 2002-2004 Volkswagen Passat, N/A
• Part number 1032-221
• Integrated engine coolant thermostat housing assembly
• 221°F start-to-open temperature
• Bleeder hole and jiggle pin included
• Rubber gasket/seal included
• 7 bolt holes for OE-style mounting
• 2 outlet ports with 1.25 in and 1.51 in diameters
• Constructed from aluminum, stainless steel, and copper
• Black and silver finish

Detailed Description

This Motorad thermostat housing assembly is engineered for Volkswagen Passat cooling system service where the thermostat and housing are replaced together. The copper case and wax compound support quick response to coolant temperature changes, while the offset design and air relief valve help promote proper system operation during refill and warm-up. The 1032-221 is manufactured to OEM specifications and processes for a factory-style replacement on 2002-2004 Volkswagen Passat models.

This part cross-references Bosch 15322 and Dorman - OE Solutions 902-5115 for the same application. If you are servicing a Volkswagen Passat cooling concern, 1032-221 provides the correct thermostat housing format for OE-matched repair work.

Common Issues This Part Can Address

• Engine running too cool or too hot due to thermostat wear
• Coolant leaks at the thermostat housing or seal area
• Air trapped in the cooling system after service
• Delayed coolant circulation during warm-up
• Fault codes or drivability issues tied to coolant temperature control

Installation Notes and Tips

Confirm the 221°F temperature rating and outlet port sizes before installation on your Volkswagen Passat. Inspect the mating surfaces, replace any damaged hoses or clamps, and verify the rubber seal seats evenly before tightening the 7-bolt housing to specification. Bleed the cooling system carefully so the jiggle pin and bleeder hole can help purge trapped air.

Quality Assurance

Motorad manufactures this Integrated Housing Thermostat as an OE-supplier part using OEM-quality materials and safety standards. The 1032-221 is built to meet factory specifications for dependable cooling system service on 2002-2004 Volkswagen Passat applications.