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Nissens 9991045 A/C Expansion Valve - Rear
| Brand | Nissens 9991045 |
|---|---|
| Position | Rear |
| Material | Aluminum |
| Refrigerant Type | R134 |
| Type | Block |
| Mounting Hardware Included | Yes |
| O-ring Quantity | 4 |
| O-rings Included | Yes |
| Fits | Land Rover and Subaru · 11 vehicles |
OE-matched design. Built to precise standards for consistent refrigerant control and sealing performance.
Block-style valve. Aluminum construction with R134 refrigerant compatibility for HVAC service.
Service-ready hardware. O-rings and mounting bolts are included whenever applicable.
Cross-references UAC EX10624C, UAC EX10663C and 73531FL00A for the same application. See all 4.
Overview
The Nissens 9991045 A/C expansion valve is a block-style aluminum refrigerant flow restrictor built for precise pressure control in the air conditioning system. It is a fitment-based replacement for select Subaru Crosstrek, Subaru Impreza, and Land Rover Defender 90 applications, with OE-matching standards used in testing and validation.
Key Features
- Block-style A/C expansion valve for controlled refrigerant metering
- Aluminum construction for a durable, lightweight housing
- Configured for R134 refrigerant systems
- Includes O-rings and mounting bolts whenever applicable
- Validated for pressure performance, tightness, opening, set-point setting, and inner finish
Detailed Description
Nissens 9991045 is engineered as an OE-style thermal expansion valve for HVAC systems that require accurate refrigerant regulation. The block design and aluminum body support consistent flow control, while Nissens testing standards focus on pressure performance, sealing integrity, opening behavior, set-point accuracy, and internal finish. This part cross-references UAC (e.g., EX10624C, EX10663C) for the same application.
Compatible with 2018-2023 Subaru Crosstrek, 2017-2019 Subaru Impreza, and 2022-2023 Land Rover Defender 90, Rear. Use this part number 9991045 when matching the correct A/C expansion valve for these applications.
What It Is Used For
- Restoring proper refrigerant metering in the A/C system
- Addressing uneven cooling performance caused by valve wear or restriction
- Correcting pressure control issues in the HVAC circuit
- Replacing a leaking or internally contaminated expansion valve
Installation Notes and Tips
Verify refrigerant type, valve style, and vehicle fitment before installation. Replace O-rings during service and confirm sealing surfaces are clean and undamaged. This part number 9991045 is listed for rear application on the Land Rover Defender 90 and for N/A-position fitment on the Subaru Crosstrek and Subaru Impreza.
Quality Assurance
Nissens manufactures thermal expansion valves to precise OE matching standards and subjects them to comprehensive testing for pressure control, tightness, opening characteristics, set-point setting, and inner finish. Part number 9991045 reflects that validation-focused approach for HVAC service work.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2023 | Land Rover | Defender 90 | Rear | — |
| 2023 | Subaru | Crosstrek | N/A | — |
| 2022 | Land Rover | Defender 90 | Rear | — |
| 2022 | Subaru | Crosstrek | N/A | — |
| 2021 | Subaru | Crosstrek | N/A | — |
| 2020 | Subaru | Crosstrek | N/A | — |
| 2019 | Subaru | Crosstrek | N/A | — |
| 2019 | Subaru | Impreza | N/A | — |
| 2018 | Subaru | Crosstrek | N/A | — |
| 2018 | Subaru | Impreza | N/A | — |
| 2017 | Subaru | Impreza | N/A | — |
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