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Nissens 999421 A/C Expansion ValveOE Quality 60-Day Returns
Part #: 999421

Nissens 999421 A/C Expansion Valve

53 vehicles fit this part
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Fitment: Volvo, S60, S90, V60, V60 Cross Country, V90, V90 Cross Country, XC60, and XC90
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OE-Style A/C Expansion Valve for Volvo

This Nissens A/C expansion valve is built for precise refrigerant control in Volvo climate systems using R1234YF. Part number 999421 is a block-style aluminum valve with OE-matching attention to pressure performance, tightness, opening behavior, set-point calibration, and internal finish.

It is a direct-fit service part for select Volvo S60, S90, V60 Cross Country, V90 Cross Country, XC60, and XC90 applications. If you are replacing a faulty Volvo A/C expansion valve, 999421 provides the correct refrigerant metering characteristics for the system.

Key Features

  • Brand: Nissens
  • Part number: 999421
  • Block-style A/C expansion valve
  • Aluminum construction
  • For R1234YF refrigerant systems
  • O-rings included for sealing service points
  • OE-focused testing for pressure, tightness, opening, and set-point control

Detailed Product Overview

Nissens 999421 is engineered as a thermal expansion valve for Volvo HVAC systems that require accurate refrigerant flow regulation. The valve’s aluminum body and block design support consistent operation in modern R1234YF air conditioning systems, while the included O-rings help support proper sealing during replacement. This part cross-references Volvo 31404338 and 32260834 for the same application.

Compatible With Volvo S60, Volvo S90, Volvo V60 Cross Country, Volvo V90 Cross Country, Volvo XC60, and Volvo XC90 applications across the listed model years, this valve is a practical choice when restoring cabin cooling performance. The part number 999421 is also useful when searching for a Volvo A/C expansion valve replacement by OE reference.

Common Problems This Part May Address

  • Weak or uneven cabin cooling
  • Incorrect refrigerant metering at the evaporator
  • A/C performance changes caused by a sticking or restricted valve
  • Temperature fluctuations during compressor cycling
  • Sealing issues at the valve connection points

Installation Notes and Tips

Verify refrigerant type before installation; this valve is specified for R1234YF systems. Match the inlet and outlet dimensions to the vehicle application before assembly, and inspect the mating surfaces for cleanliness and damage. Replace the valve only after recovering the refrigerant and following proper HVAC service procedures for the vehicle.

For fitment, use the exact vehicle listing: Fits 2019-2024 Volvo S60, N/A; Fits 2017-2024 Volvo S90, N/A; Fits 2020-2024 Volvo V60 Cross Country, N/A; Fits 2021-2024 Volvo V90 Cross Country, N/A; Fits 2018-2024 Volvo XC60, N/A; Fits 2016-2022 Volvo XC90, N/A; Fits 2019-2021 Volvo V60, N/A; Fits 2018-2021 Volvo V90, N/A; Fits 2025 Volvo S60, N/A; Fits 2025 Volvo S90, N/A; Fits 2025 Volvo V90 Cross Country, N/A; Fits 2023-2025 Volvo XC90, N/A.

Quality Assurance

Nissens manufactures this expansion valve to OE-matching standards and validates pressure performance, tightness, opening characteristics, set-point setting, and internal finish through comprehensive testing.

BrandNissens
Part Number999421
MaterialAluminum
Refrigerant TypeR1234yf
TypeBlock
Mounting Hardware IncludedNo
O-ring IncludedYes
O-ring Quantity4

This part fits 53 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2025VolvoS60B5 Core2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2025VolvoS90B6 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2025VolvoV90 Cross CountryB6 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2025VolvoXC90B6 Core2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2024VolvoS60B5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2024VolvoS90B6 Ultimate2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2024VolvoV60 Cross CountryB5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2024VolvoV90 Cross CountryB6 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2024VolvoXC60B5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2024VolvoXC90B6 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2023VolvoS60B5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2023VolvoS90B6 Ultimate2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2023VolvoV60 Cross CountryB5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2023VolvoV90 Cross CountryB6 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2023VolvoXC60B5 Plus2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2023VolvoXC90B6 Ultimate2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.8 mm, Outlet 2: 20.5 mm
2022VolvoS60B5 R-Design2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2022VolvoS90B6 Momentum2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2022VolvoV60 Cross CountryT52.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2022VolvoV90 Cross CountryB62.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2022VolvoXC60B5 R-Design2.0LL4MILD HYBRID EV-GAS (MHEV)N/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2022VolvoXC90T6 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoS60T5 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoS90T6 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoV60T5 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoV60 Cross CountryT52.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoV90T6 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoV90 Cross CountryT62.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoXC60T6 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2021VolvoXC90T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoS60T5 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoS90T6 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoV60T5 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoV60 Cross CountryT52.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoV90T5 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoXC60T5 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2020VolvoXC90T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoS60T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoS90T6 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoV60T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoV90T6 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoV90 Cross CountryT52.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoXC60T5 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2019VolvoXC90T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2018VolvoS90T6 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2018VolvoV90T6 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2018VolvoV90 Cross CountryT52.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2018VolvoXC60T5 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2018VolvoXC90T5 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2017VolvoS90T6 Momentum2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2017VolvoV90 Cross CountryT62.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2017VolvoXC90T6 R-Design2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm
2016VolvoXC90T6 Inscription2.0LL4GASN/AInlet 1: 40mm, Inlet 2: 36 mm, Outlet 1: 13.75 mm, Outlet 2: 20.5 mm

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

3140433832260834

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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