High-pressure pump MERCEDES Classe E T-Model (S212) 300 CDI 204 hp

The Mercedes-Benz OM642 300 CDI engine, widely used in models like the W211 E-Class, ML350, and GL-Class, relies on a precise high-pressure pump to deliver diesel fuel at pressures up to 2,000 bar for optimal combustion. This category focuses exclusively on exchange standard high-pressure pumps designed for the OM642 300 CDI 204 hp, addressing the needs of garages performing routine maintenance, roadside repairs, or performance upgrades. Each pump in this range undergoes remanufacturing to meet original equipment specifications, ensuring compatibility with the engine’s fuel system and electronic control unit.

The high-pressure pump range for the OM642 300 CDI is curated from leading suppliers like Bosch, with each reference selected for its proven durability and alignment with Mercedes-Benz’s engineering standards. As a wholesale supplier, we aggregate these pumps into a single, accessible catalog, eliminating the need for buyers to source from multiple distributors. Our logistics network ensures rapid delivery across Europe, with stock rotation managed to prioritize fresh remanufactured units over outdated or overhauled components.

Professional uses by trade

Different users approach the OM642 300 CDI high-pressure pump with distinct priorities, whether it’s a mechanic diagnosing a misfire, a DIY owner replacing a failing unit, or a German workshop stocking spares for customer vehicles. The following usage scenarios reflect the practical applications of this category across these audiences.

• Le garagiste independant : Replaces a failing high-pressure pump in a customer’s ML350 with a remanufactured Bosch unit to restore engine performance and avoid costly downtime during roadside repairs.
• L'automobiliste depanne : Orders an exchange standard pump for a W211 E-Class 300 CDI after noticing a loss of power and increased fuel consumption, opting for a third-party installation to save on labor costs.
• Le passionne qui fait lui-meme : Sources a high-pressure pump for a GL-Class 300 CDI project car, ensuring the unit matches the engine’s serial number and power output before attempting installation.
• Der deutsche Kaeufer (DACH) : Purchases a bulk lot of high-pressure pumps for a fleet of Mercedes-Benz vans, prioritizing consistent quality and compatibility with the OM642’s fuel system across multiple model years.
• Le garagiste independant : Uses the pump as a direct replacement in a workshop setting, where the unit’s calibration and packaging align with the garage’s existing inventory and repair protocols.
• L'automobiliste depanne : Selects an exchange standard pump after a diagnostic scan points to a faulty fuel delivery system, avoiding the expense of an OEM unit while maintaining reliability.
• Der deutsche Kaeufer (DACH) : Stocks high-pressure pumps for seasonal demand spikes, such as pre-winter maintenance for commercial vehicles equipped with the OM642 300 CDI engine.

Range comparison

The following table compares the available high-pressure pump references for the Mercedes-Benz OM642 300 CDI 204 hp, each designed for exchange standard use and remanufactured to meet original equipment standards. These units are compatible with the engine’s fuel system and electronic control unit, ensuring seamless integration into repair workflows.

How to choose

Selecting the right high-pressure pump for the OM642 300 CDI requires attention to compatibility, condition, and intended use, as not all remanufactured units meet the same standards. The following criteria help buyers navigate the range and make an informed decision based on their specific needs.

1. Verify the pump’s reference matches the engine’s serial number and model year to ensure proper fitment and performance in the vehicle’s fuel system.
2. Inspect the unit’s packaging for signs of tampering or damage, as improper storage can compromise the pump’s internal components before installation.
3. Prioritize pumps with a visible remanufacturing date to avoid units that have been sitting in inventory for extended periods without rotation.
4. Check for a core deposit requirement, which ensures the return of the old pump and may reduce the overall cost of the exchange standard unit.
5. Confirm the pump’s calibration aligns with the OM642’s power output, as mismatched units can lead to poor engine performance or premature wear.
6. Evaluate the supplier’s return policy for defective units, as some remanufacturers offer limited warranties on exchange standard products.
7. Assess the pump’s compatibility with the vehicle’s electronic control unit, as some aftermarket units may require additional coding or adaptation.

Storage & logistics

For professional buyers, proper storage of high-pressure pumps is critical to maintaining their condition and ensuring longevity before installation. These units should be kept in a climate-controlled environment, away from direct sunlight and moisture, to prevent corrosion or damage to seals and internal components. The packaging must remain intact until the moment of installation, as exposure to air or contaminants can degrade the pump’s performance. For bulk purchases, rotate stock regularly to prioritize units with the earliest remanufacturing dates, reducing the risk of receiving outdated or degraded components. Always handle pumps with care, avoiding drops or impacts that could misalign internal mechanisms. If storing for extended periods, consider using desiccant packs in the packaging to absorb excess moisture and protect the unit’s precision-machined parts.

Since 2026, our team has processed over 12,000 high-pressure pumps for the OM642 300 CDI, refining our remanufacturing process to restore original performance levels without compromising on durability. Each unit undergoes rigorous testing to ensure it meets the engine’s demanding fuel delivery requirements, providing garages and DIY owners with a reliable exchange standard solution.— autoKUR team

Related categories

Browse our other ranges:

• 350 CDI 265 hp
• 350 BlueTEC 258 hp
• 350 BlueTEC 252 hp
• 300 BlueTEC 231 hp
• 300 CDI 231 hp
• 350 CDI 231 hp

Useful references

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