OE Quality
60-Day Returns

Bosch 5203WS Air Filter
Overview of Bosch Workshop Air Filter 5203WS
The Bosch Workshop Air Filter 5203WS is designed to provide reliable engine air filtration for select Lexus and Toyota models. This panel-shaped engine air filter ensures clean airflow, helping maintain engine performance and efficiency in vehicles like the Lexus NX300h and Toyota Prius.
- Panel shape for precise fitment
- Compatible with Lexus CT200h, NX300h and Toyota Prius, Prius Plug-In, Prius V, RAV4
- One unit required per vehicle
- Part number 5203WS for easy identification
- Packaged with 112 cases per pallet for bulk supply
Detailed Product Description
The Bosch Workshop Air Filter 5203WS is engineered to meet the filtration needs of hybrid and conventional engines in specific Lexus and Toyota models. Its panel design allows for a secure and exact fit, ensuring that only clean air enters the engine. This filter is part of Bosch's Workshop Air Filter line, which focuses on delivering dependable filtration solutions tailored for professional automotive service environments. The Workshop Air Filter line emphasizes quality and compatibility, making it suitable for routine maintenance and replacement in workshop settings.
Compatible Vehicles and Applications
This engine air filter is compatible with the following makes and models:
- Lexus CT200h
- Lexus NX300h
- Toyota Prius
- Toyota Prius Plug-In
- Toyota Prius V
- Toyota RAV4
It is designed to replace the original air filter in these vehicles, ensuring proper engine air intake and filtration.
Common Issues Addressed by Bosch 5203WS Air Filter
- Reduced engine performance due to clogged or dirty air filters
- Increased fuel consumption from restricted airflow
- Engine contamination from dust and debris
- Unstable engine idling caused by poor air filtration
- Potential damage to engine components from unfiltered air
Installation Notes and Tips
- Ensure the engine is off and cool before replacing the air filter
- Remove the old air filter carefully to avoid debris entering the intake
- Verify the panel shape and size match the Bosch 5203WS filter
- Install the filter with the correct orientation for a secure seal
- Check the air filter housing for damage or debris before installation
Quality Assurance and Warranty
Bosch maintains strict quality control standards for the Workshop Air Filter line, including the 5203WS model. Each filter is manufactured to meet OEM specifications for fit and filtration performance. While specific warranty details are not provided here, Bosch products typically come with manufacturer-backed quality assurance to support professional automotive maintenance.
| Brand | Bosch |
| Part Number | 5203WS |
| Position | Workshop Air Filter |
| Cases Per Pallet (ORLY) | 112 |
| Shape | Panel |
| Unit(s) per Car Qty (ORLY) | 1 |
This part fits 33 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2021 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2020 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2019 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2018 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2018 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Workshop Air Filter |
| 2017 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2017 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2017 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2017 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Workshop Air Filter |
| 2016 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2016 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2016 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2016 | Toyota | RAV4 | 2.5L | L4 | ELECTRIC/GAS | N/A | Workshop Air Filter |
| 2015 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2015 | Lexus | NX300h | 2.5L | L4 | N/A | Workshop Air Filter | |
| 2015 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2015 | Toyota | Prius Plug-In | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2015 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2014 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2014 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2014 | Toyota | Prius Plug-In | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2014 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2013 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2013 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2013 | Toyota | Prius Plug-In | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2013 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2012 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2012 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2012 | Toyota | Prius Plug-In | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2012 | Toyota | Prius V | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2011 | Lexus | CT200h | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2011 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter | |
| 2010 | Toyota | Prius | 1.8L | L4 | N/A | Workshop Air Filter |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.