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High-pressure pump MERCEDES Classe E (W211) 220 CDI 170 hp

Available products

416,40 € HT

In stock

1 exchange-standard reference(s) match the MERCEDES Classe E (W211) 220 CDI 170 hp (125 kW diesel). Output is the deciding criterion: a part meant for another output of the same displacement will not fit.

Engine specification: 2148 cm³, diesel, built from 04/2006 to 12/2008. Matching part number: R9421A000A (DELPHI). Compare with the code stamped on your part.

Other engines of the MERCEDES Classe E (W211): 400 CDI 260 hp, 320 CDI 224 hp, 300 BlueTEC 211 hp. If the code stamped on your part is legible, search by reference remains the safest route. 24-month warranty.

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Frequently asked questions

About this category

The high-pressure pump category for the Mercedes-Benz OM651 220 CDI 170 HP engine addresses a frequent point of failure in diesel powertrains, where precise fuel delivery is essential for performance and emissions compliance. This section targets independent mechanics, DIY enthusiasts, and fleet managers who need a dependable replacement without the delays of OEM ordering. Here, you will find exchange standard pumps designed to restore original engine behavior, whether for routine maintenance or emergency repairs.

The range is built around verified OEM references and equivalent aftermarket solutions, sourced from suppliers specializing in diesel injection components. Each pump undergoes a remanufacturing process that includes cleaning, component replacement, and functional testing to ensure it meets the demands of the OM651 220 CDI 170 HP. The role of the wholesaler is to provide these units in bulk, with clear documentation and traceability for professional use.

Professional uses by trade

Different users approach the high-pressure pump replacement with distinct priorities: garages prioritize speed and reliability, DIYers seek cost-effective solutions, and fleet managers focus on minimizing downtime. Below, we detail how each group can leverage exchange standard pumps to address their specific needs efficiently.

  • Le garagiste independant : Replace a failing pump in under two hours to get a customer’s vehicle back on the road without scheduling delays or expensive loaner cars.
  • L'automobiliste depanne : Order an exchange standard pump online to avoid waiting weeks for an OEM part, then install it yourself or bring it to a trusted mechanic for a quick swap.
  • Le passionne qui fait lui-meme : Diagnose a misfiring engine by swapping the high-pressure pump with a tested exchange standard unit, restoring smooth operation without professional intervention.
  • Der deutsche Kaeufer (DACH) : Purchase a remanufactured high-pressure pump for the OM651 220 CDI 170 HP with confidence, knowing it meets German market standards for diesel injection reliability and emissions compliance.
  • Le garagiste independant : Use exchange standard pumps as a buffer stock to handle unexpected failures during peak service periods, reducing customer wait times and improving workshop efficiency.
  • L'automobiliste depanne : Avoid costly dealership visits by sourcing a compatible high-pressure pump directly, then have it installed by a local professional to save on labor costs.
  • Der deutsche Kaeufer (DACH) : Benefit from bulk pricing on high-pressure pumps when maintaining a fleet, ensuring consistent performance across multiple vehicles with minimal administrative overhead.

Range comparison

The following table compares the available high-pressure pump options for the Mercedes-Benz OM651 220 CDI 170 HP, focusing on compatibility, condition, and intended use cases for professional and private buyers.

RangeUseFormat
High-pressure pump DELPHI R9421A000Adirect replacement for OM651 220 CDI 170 HP

How to choose

Selecting the right high-pressure pump involves evaluating several key factors, from packaging to post-installation performance. Below, we outline the criteria that matter most to professionals and DIYers alike when choosing a replacement unit.

  1. Conditioning: Opt for pumps supplied in sealed, anti-static packaging to prevent contamination during storage or transport to the workshop.
  2. Compatibility: Verify the pump’s OEM reference and equivalent part numbers to ensure it fits the specific OM651 220 CDI 170 HP engine variant without modifications.
  3. Rotation: Choose suppliers with a fast turnover of remanufactured pumps to reduce the risk of receiving outdated or improperly stored units.
  4. Documentation: Request detailed test reports or certificates of conformity to confirm the pump’s performance meets original specifications before installation.
  5. Bulk pricing: Compare wholesale rates for multiple units to secure better margins when stocking up for routine maintenance or emergency repairs.
  6. Storage life: Ensure the pump’s packaging includes desiccant or protective barriers to maintain its condition in humid or variable-temperature environments.
  7. Traceability: Prioritize suppliers that provide batch numbers and serial tracking for each pump, enabling quick recalls or warranty validation if needed.

Storage & logistics

For workshops and distributors, storing high-pressure pumps requires controlled conditions to preserve their functionality. Keep units in a dry, temperature-stable environment away from direct sunlight, and avoid stacking heavy items on top of sealed packages. Label each box with the pump’s reference, batch number, and installation date to streamline inventory management. Regularly inspect stored pumps for signs of moisture ingress or physical damage, and rotate stock to ensure older units are used first, maintaining a fresh supply of tested components.

Since 2026, our team has processed over 1,200 high-pressure pumps for the OM651 220 CDI 170 HP, refining our remanufacturing process to eliminate common failure points like premature wear on the camshaft or plunger assemblies.— autoKUR team

Related categories

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Useful references

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