Bosch - 0928400424 - EGR Valve
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Product Information
Full details
The Bosch 0928400424 is a precision-engineered pneumatic EGR valve designed specifically for Citroen and Peugeot vehicles equipped with the 1.9D WJZ (DW8) engine. It serves as an essential component for maintaining engine efficiency and emissions standards, offering a direct, reliable replacement for worn or faulty factory units. While this part meets original equipment (OE) specifications, it is highly engine-specific, meaning owners must cross-reference their vehicle's engine code to ensure compatibility before attempting installation.
All features
| Model Part Number | 0928400424 |
|---|---|
| Brand | Bosch |
Extended Product Information
FAQs
Is this EGR valve compatible with all Peugeot engines?
No, it is specifically designed for the 1.9D WJZ (DW8) engine. Please check your specific engine code before purchase.
Does the package include a new gasket?
Always check your specific retailer's packaging, but it is recommended to use a new, high-quality gasket during installation to ensure a proper seal.
What happens if the EGR valve is left in a failed state?
A failed valve can lead to poor fuel economy, increased emissions, and potential damage to the engine due to improper combustion temperatures.
Can I clean this valve if it gets clogged?
While superficial cleaning is possible, the internal pneumatic diaphragm is a wear item. Replacement is the standard procedure for reliable performance.
Do I need special tools to install this part?
Standard mechanic's tool kits including socket sets and screwdrivers are typically sufficient.
Troubleshooting
Engine continues to idle roughly after replacement
Verify the vacuum control hose connected to the EGR valve for cracks or detachment.
Performance issue persists with 'check engine' light
Ensure the EGR intake passages are clean and not blocked by carbon deposits before confirming valve failure.
Pros and Cons
Pros
- Meets strict OE quality standards for reliable operation
- Tailored specifically for 1.9D WJZ (DW8) engine configurations
- Helps restore engine efficiency and emissions compliance
- Durable construction resistant to high exhaust temperatures
Cons
- Strictly limited to 1.9D WJZ engine compatibility
- Requires mechanical knowledge for proper installation
- Pneumatic system must be tested for vacuum leaks post-installation
Setup, Compatibility & Care
To ensure a successful installation, first verify that your vehicle is equipped with the 1.9D WJZ (DW8) engine. The installation requires basic hand tools and access to the EGR assembly, which is typically located on the side of the engine block near the exhaust manifold. When installing, always use a new gasket to prevent exhaust leaks. After securing the valve, verify that the vacuum line connected to the pneumatic actuator is free of cracks or blockages. Regular maintenance is minimal, but you should periodically inspect the EGR path for excessive carbon buildup, which can obstruct gas flow and cause premature wear on the valve mechanism.