High-pressure pump MERCEDES Classe G (W463) 270 CDI 156 hp

The Mercedes-Benz OM646 270 CDI 156 hp high-pressure pump category addresses a common failure point in diesel engines, where wear on the pump’s internal components leads to reduced fuel pressure, loss of power, and increased emissions. This section is designed for independent garages, DIY enthusiasts, and German-speaking buyers in the DACH region who need a reliable, exchange-standard solution without the delays of ordering a new OEM unit. Here, you will find remanufactured pumps that restore original performance while offering a cost-effective alternative to brand-new replacements.

The range is built around Bosch’s high-pressure pump models, which are the industry standard for the OM646 engine. As a wholesale supplier, we provide these pumps in bulk to garages and retailers, ensuring that mechanics can access the right part quickly, whether for a single repair or a full fleet overhaul. The focus is on compatibility, durability, and ease of installation, with no need for complex diagnostics or specialized tools.

Professional uses by trade

Different users approach the high-pressure pump replacement with distinct priorities: garages prioritize speed and reliability, DIY enthusiasts seek cost savings and simplicity, while German buyers in the DACH region often look for parts that meet local regulatory standards without compromising on quality.

• Le garagiste independant : Replace a failing high-pressure pump in under an hour to get a customer’s vehicle back on the road without costly downtime.
• Le garagiste independant : Use exchange-standard pumps to offer competitive pricing while maintaining the high standards expected by Mercedes-Benz owners.
• L'automobiliste depanne : Order a remanufactured pump online and install it yourself to avoid expensive workshop fees for a straightforward repair.
• L'automobiliste depanne : Avoid the hassle of waiting for a dealership-ordered part by sourcing a ready-to-fit high-pressure pump from a trusted supplier.
• Le passionne qui fait lui-meme : Diagnose a loss of power or excessive smoke from the exhaust by replacing the high-pressure pump with a tested, remanufactured unit.
• Le passionne qui fait lui-meme : Save money on repairs by opting for an exchange-standard pump that delivers OEM-level performance at a fraction of the cost.
• Der deutsche Kaeufer (DACH) : Purchase a high-pressure pump that meets German TÜV standards, ensuring compliance with local regulations and long-term reliability.

Range comparison

Below, you will find the three Bosch high-pressure pump models compatible with the Mercedes-Benz OM646 270 CDI 156 hp engine, each listed with its exact reference and key specifications for easy identification and ordering.

How to choose

Selecting the right high-pressure pump depends on several factors, including engine age, mileage, and the specific symptoms of failure. Garages and DIY mechanics should consider compatibility, condition, and the pump’s history to ensure a lasting repair.

1. Verify the engine code and model year to confirm the pump’s compatibility with your Mercedes-Benz 270 CDI 156 hp.
2. Inspect the pump’s condition for signs of wear, such as corrosion or damaged fittings, before installation to prevent leaks or pressure loss.
3. Check the pump’s rotation direction and mounting points to ensure it aligns correctly with the engine’s fuel system layout.
4. Opt for a remanufactured pump with a documented history of testing to deliver consistent performance and longevity.
5. Consider the pump’s packaging and storage conditions to avoid contamination or damage before installation.
6. For high-mileage engines, choose a pump with reinforced internal components to withstand prolonged use without failure.
7. Ensure the pump’s electrical connections and sensors are intact to avoid communication errors with the engine control unit.

Storage & logistics

High-pressure pumps must be stored in a dry, temperature-controlled environment to prevent moisture damage or seal degradation. For wholesale buyers, we recommend using sealed, anti-static packaging to protect the pump during transit, especially in bulk shipments. Avoid stacking heavy items on top of the pumps, as this can distort the housing or damage internal components. Regular inventory rotation ensures that older stock is used first, maintaining the pump’s reliability over time. For garages, storing pumps in a clean, organized space reduces the risk of cross-contamination with other engine parts.

Since 2026, our team has supplied thousands of high-pressure pumps for the OM646 engine, and we’ve seen firsthand how a well-chosen exchange-standard unit can restore a vehicle’s performance without the expense of a new OEM part.— autoKUR team

Related categories

Browse our other ranges:

• 400 CDI 250 hp
• 350 D 245 hp
• 320 CDI 224 hp
• 350 CDI 211 hp

Useful references

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