High-pressure pump MERCEDES CLK (C209) 320 CDI 224 hp

This category covers high-pressure pumps specifically designed for Mercedes-Benz 320 CDI engines producing 224 horsepower, a powertrain widely used in commercial vehicles and SUVs across Europe. These pumps regulate fuel pressure in the common rail system, a role that directly impacts engine responsiveness, fuel economy, and emissions compliance. Whether you are a mechanic diagnosing a misfire or a DIY enthusiast replacing a failing unit, selecting the correct pump ensures your engine returns to optimal operating conditions.

The range is built around Bosch remanufactured pumps, a brand synonymous with diesel injection reliability, supplied through a network of European wholesalers to maintain consistent availability. Each pump is tested for pressure consistency and internal wear, then packaged for direct fitment into the engine bay without additional modifications. The wholesale model ensures workshops receive units at competitive rates while maintaining traceability to the original equipment manufacturer’s specifications.

Professional uses by trade

Different professionals approach high-pressure pump replacement with distinct priorities: garages prioritize fast turnaround and compatibility, DIY owners seek clear instructions and part accuracy, while German buyers expect documentation and after-sales support aligned with local standards.

• Le garagiste independant : Replace a failing pump during a routine service to avoid costly engine damage and customer downtime, using a remanufactured unit that meets OEM pressure curves.
• L'automobiliste depanne : Diagnose a sudden loss of power or excessive black smoke by swapping the high-pressure pump with a tested exchange-standard unit, restoring normal engine behavior quickly.
• Le passionne qui fait lui-meme : Order the correct pump model, follow a step-by-step guide, and complete the replacement in a home garage with basic tools, avoiding expensive workshop fees.
• Der deutsche Kaeufer (DACH) : Purchase a high-pressure pump with clear documentation in German, ensuring compliance with local emissions regulations and workshop practices for Mercedes diesel engines.

Range comparison

Below are the two high-pressure pump models compatible with the Mercedes 320 CDI 224 HP, listed with their technical identifiers and core return policies to simplify your selection.

How to choose

Selecting the right high-pressure pump involves more than matching the part number; consider packaging, storage conditions, and supplier reliability to ensure long-term performance in your application.

1. Verify the pump’s compatibility with your engine’s serial number and production year to avoid mismatched pressure settings or connector types.
2. Choose pumps packaged in sealed, anti-static containers to prevent contamination during storage or transport to the workshop or vehicle.
3. Prioritize suppliers with a documented rotation policy, ensuring units are not older than two years from remanufacturing date to maintain seal integrity.
4. Inspect the pump’s inlet and outlet ports for damage or corrosion before installation, as these areas directly affect fuel flow and pressure regulation.
5. Request a core deposit invoice upon purchase, which outlines the return process for your old pump and confirms the exchange-standard pricing structure.
6. Check for included gaskets or seals in the packaging, as missing components can lead to leaks and subsequent engine performance issues.
7. Confirm the pump’s pressure rating matches the engine’s ECU calibration to prevent over- or under-fueling scenarios during operation.

Storage & logistics

High-pressure pumps must be stored in a dry, temperature-controlled environment away from direct sunlight and vibration sources to preserve internal components and sealing surfaces. For workshops, use dedicated shelving with anti-static properties and label each unit with its part number and remanufacturing date. Avoid stacking pumps vertically, as this can distort the housing or damage the pressure sensor interface. When transporting, secure the pump in its original packaging or a padded case to prevent impact damage, especially during delivery to remote locations or customer sites.

With over a decade of supplying diesel injection components to European workshops, we’ve seen how a single high-pressure pump failure can cascade into major engine issues if left unaddressed, which is why we rigorously test every unit before it leaves our facility.— autoKUR team

Related categories

Browse our other ranges:

• 270 CDI 170 hp
• Fuel injector
• Gasket kit
• Core deposit
• Search by part reference
• Turbocharger

Useful references

For regulatory and sector references, see Reglement (UE) 461/2010 — pieces de rechange et garantie constructeur.