Nissens 999443 A/C Expansion Valve

Product Overview

This Nissens A/C expansion valve is a block-style thermal control component for R134A systems. It is built with an aluminum body and includes the O-rings needed for sealing at the connection points. Part number 999443 is a direct-fit option for select BMW and Mini applications with the specified port dimensions.

Compatible With BMW 228i Gran Coupe, BMW 228i xDrive Gran Coupe, BMW M235i xDrive Gran Coupe, BMW X1, BMW X2, Mini Cooper, Mini Cooper Clubman, and Mini Cooper Countryman applications listed below. Part number 999443 also cross-references BMW 64116845415 and 64119287284 for the same application.

Key Features

• Block-style A/C expansion valve for refrigerant flow control
• Aluminum construction for a durable thermal-management component
• Configured for R134A refrigerant systems
• O-rings included for sealing at the connection points
• Fits select BMW and Mini HVAC applications with matching inlet and outlet dimensions

Detailed Description

Nissens 999443 is an A/C expansion valve used to regulate refrigerant flow into the evaporator, helping the HVAC system maintain proper cooling performance. The block design and aluminum construction make it a practical replacement for service work on compatible BMW and Mini platforms. Fitment includes 2021-2024 BMW 228i Gran Coupe, 2020-2024 BMW 228i xDrive Gran Coupe, 2020-2024 BMW M235i xDrive Gran Coupe, 2017-2022 BMW X1, 2018-2024 BMW X2, 2014-2024 Mini Cooper, 2016-2024 Mini Cooper Clubman, and 2017-2024 Mini Cooper Countryman applications listed in the fitment data. For BMW X2 and Mini Cooper HVAC service, part number 999443 provides the specified connection layout and refrigerant compatibility.

Nissens positions this part within its thermal-management range, which focuses on essential engine and climate-control components. That product-line approach is reflected in the OE-style construction and application-specific fitment details used for BMW and Mini HVAC repairs.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• Leaking seals at the valve connection points
• Service replacement for a worn A/C expansion valve
• HVAC performance issues on compatible BMW and Mini systems

Installation Notes

Verify refrigerant type, port dimensions, and system layout before installation. Replace the sealing O-rings during service and confirm the connections are clean and properly seated. This part is listed with mounting hardware included in the product data.

Quality Assurance

Nissens describes its products as manufactured to a high-quality standard across its thermal and engine-efficiency range. Part number 999443 is supported by application-specific fitment data and cross-references to BMW 64116845415 and 64119287284.