/live/media/FS/FS_74938_Fro.jpg)
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
Four Seasons 74938 HVAC Heater Control Valve
| Brand | Four Seasons 74938 |
|---|---|
| Description | Single solenoid electronic heater valve |
| Material | Plastic |
| Number of Connectors | 2 connectors |
| Opening B IN | 0.78 |
| Opening IN | 0.78 |
| Operation Type | Electric valve |
| Style | Non-bypass |
| Type | Heater valves |
| Product line | Heater Valve |
| Fits | Audi · 4 vehicles |
Electronic valve. Single-solenoid design for precise heater control.
Plastic construction. Lightweight material for dependable HVAC operation.
Non-bypass style. Directs coolant flow through the heater valve.
Cross-references Anchor 300047, Four Seasons 74938 and Genuine 4H0121670A for the same application. See all 3.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 74938 Heater Valve Overview
The Four Seasons 74938 is a single-solenoid electronic heater valve built for HVAC temperature control in select Audi applications. It uses a plastic body, two connectors, and an electric non-bypass design to regulate heater flow with the correct OE-style fit and function.
Compatible with 2017-2019 Audi RS3 and 2019 Audi TT RS Quattro, this heater valve is a direct-fit replacement for vehicles that need precise coolant flow control through the heater circuit. Four Seasons 74938 is also cross-referenced to Anchor 300047 and Genuine 4H0121670A for the same application.
Key Features
- Single solenoid electronic heater valve
- Electric valve operation for HVAC temperature control
- Plastic construction
- Two electrical connectors
- Non-bypass style
- 0.78 in opening size
- Fits 2017-2019 Audi RS3 and 2019 Audi TT RS Quattro
Product Details
Four Seasons Heater Valve 74938 is part of the brand’s Heater Valve line and is engineered for dependable HVAC operation in modern Audi platforms. The electronic, single-solenoid design helps control heater coolant flow through the system, supporting consistent cabin temperature management in vehicles equipped with the specified OE-style configuration. For shoppers searching for a 2017-2019 Audi RS3 heater valve or a 2019 Audi TT RS Quattro heater control valve, this part number provides a focused replacement option.
What This Part Helps Address
- Inconsistent cabin heat output
- Heater flow that stays open or closed at the wrong time
- HVAC temperature control faults tied to the heater valve
- Coolant routing issues in the heater circuit
- Replacement needs for a worn or failed electronic heater control valve
Installation Notes
Verify connector style, opening size, and valve type before installation. This part uses 2 connectors and a non-bypass electric valve design, so matching the original configuration is important for proper operation. Confirm vehicle application by year, make, and model before ordering, especially on Audi RS3 and Audi TT RS Quattro HVAC repairs.
Quality Assurance
Four Seasons states that its products are engineered and tested for long service life and draws on more than 50 years of mobile A/C experience. Part number 74938 is built to meet the needs of the specified Audi heater valve applications with an OE-style replacement approach.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2019 | Audi | RS3 | N/A | Heater Valve |
| 2019 | Audi | TT RS Quattro | N/A | Heater Valve |
| 2018 | Audi | RS3 | N/A | Heater Valve |
| 2017 | Audi | RS3 | N/A | Heater Valve |
| No rows match your filter. | ||||