High-pressure pump MERCEDES Classe A (W169) 200 CDI 140 hp

The high-pressure pump is the heart of your Mercedes 200 CDI 140 HP’s common rail diesel system, converting low-pressure fuel into the ultra-high pressure needed for precise injection. Whether you’re a professional mechanic facing a repeat failure or a DIY enthusiast tackling a repair, this category delivers the exact replacement pump your engine demands, remanufactured to original specifications. No guesswork, no shortcuts—just a direct path to restoring your vehicle’s performance.

This range is built around the Bosch 0445010120, a proven high-pressure pump designed for Mercedes OM611 and OM646 engines, covering model years from 2001 to 2009. The pump is sourced from remanufacturers who specialize in diesel fuel systems, ensuring each unit undergoes rigorous testing for pressure consistency and leak-free operation before reaching your workshop.

Professional uses by trade

Different professionals approach high-pressure pump replacement with distinct priorities: garages prioritize speed and reliability, DIYers seek clarity and cost control, and German buyers demand precision and documentation. Below, we outline how each group uses these pumps effectively in their workflows.

• Le garagiste independant : Replace the pump during scheduled maintenance to prevent unexpected breakdowns, using the Bosch 0445010120 as a drop-in solution that matches OEM torque and pressure curves.
• L'automobiliste depanne : Diagnose a failing pump by checking for hard starts or black smoke, then order the exact reference to avoid mismatched parts that could worsen the issue.
• Le passionne qui fait lui-meme : Strip the old pump carefully to reclaim the core deposit, ensuring the replacement fits the engine bay without modifications or clearance issues.
• Der deutsche Kaeufer (DACH) : Verify the pump’s compatibility with your Mercedes by cross-referencing the engine code (OM611/OM646) and model year, prioritizing units with documented remanufacturing processes.
• Le garagiste independant : Use the pump as a temporary fix for customers waiting on OEM parts, reducing downtime while maintaining repair quality.
• L'automobiliste depanne : Pair the pump replacement with a fuel filter change to extend the life of the new component and prevent premature wear.
• Der deutsche Kaeufer (DACH) : Store spare pumps in a climate-controlled environment to preserve seals and prevent corrosion, especially in regions with high humidity.

Range comparison

Below, you’ll find the high-pressure pump designed specifically for Mercedes 200 CDI 140 HP engines, listed with its exact reference and key attributes for easy identification and ordering.

How to choose

Selecting the right high-pressure pump involves more than matching the reference—it requires evaluating condition, packaging, and supplier reliability to avoid costly mistakes.

1. Prioritize pumps with documented remanufacturing processes, as these restore original pressure tolerances and seal integrity better than untested units.
2. Check the packaging for protective seals and anti-static bags to prevent contamination during storage or transit, especially for sensitive diesel components.
3. Verify the pump’s pressure rating matches your engine’s specifications, as mismatched units can cause erratic fuel delivery or premature failure.
4. Source from suppliers who offer clear core deposit policies, ensuring you recover costs when returning the old pump without hidden fees.
5. Opt for pumps with visible wear indicators, such as chipped paint or corroded fittings, as these signal potential internal issues that may not be immediately apparent.
6. Ensure the pump’s electrical connector matches your vehicle’s wiring harness to avoid adapter cables or splicing, which can introduce electrical faults.
7. For bulk orders, confirm the supplier’s rotation policy to avoid receiving units with extended shelf life, which may have degraded seals or lubricants.

Storage & logistics

Store high-pressure pumps in a dry, temperature-controlled environment away from direct sunlight and automotive fluids to preserve rubber seals and metal components. Avoid stacking units to prevent pressure points on critical surfaces, and use original packaging or equivalent protective materials to shield against dust and moisture. For long-term storage, rotate stock regularly to ensure older units are used first, reducing the risk of seal degradation or internal corrosion. Always handle pumps with clean gloves to avoid transferring oils or contaminants that could compromise performance.

Since 2026, we’ve seen too many cases where a mismatched or poorly stored pump accelerates wear on the entire fuel system—our team now insists on verified remanufacturing and proper handling to protect your repairs.— autoKUR team

Related categories

Browse our other ranges:

• 200 CDI 136 hp
• 180 CDI 109 hp
• 160 CDI 82 hp

Useful references

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