Fuel injector MERCEDES Classe GL (X166) 350 BlueTEC 258 hp

The 350 BlueTEC 258 hp category addresses a critical need in the Mercedes-Benz OM651 diesel engine lineup, where fuel injectors are exposed to extreme pressures and thermal cycling. Whether you’re a mechanic troubleshooting a misfire, a car owner restoring lost power, or a German buyer seeking a cost-effective alternative, this section provides the exact injector solutions your engine demands. No workshop visits, no unnecessary downtime—just the right part for the job.

This range is built around the OM651’s high-pressure common-rail architecture, where injectors must deliver sub-millisecond precision to maintain combustion efficiency. The wholesale model ensures garages receive bulk-ready units with traceable cores, while the reconditioning process extends the lifecycle of these critical components without compromising reliability.

Professional uses by trade

Different users approach injector replacement with distinct priorities: garages need speed and traceability, DIYers value clarity, and German buyers compare technical specifications. Below, each use case is addressed with practical guidance tailored to the OM651’s demands.

• Le garagiste independant : Replace a failing injector in under 30 minutes by referencing the OM651’s engine code and cross-checking the OEM number against our compatibility list.
• L'automobiliste depanne : Diagnose a rough idle or black smoke by matching your vehicle’s model year and power output to the correct injector variant in this category.
• Le passionne qui fait lui-meme : Order the injector with core deposit included, then return the old unit in the same packaging to avoid extra fees while saving on the replacement cost.
• Der deutsche Kaeufer (DACH) : Verify the injector’s spray pattern and electrical resistance before installation, ensuring it meets Mercedes-Benz’s original specifications for the 350 BlueTEC engine.
• Le garagiste independant : Use the injector’s CHRA (common-rail high-pressure assembly) compatibility to batch-order replacements for fleets operating under similar load conditions.
• L'automobiliste depanne : Check for symptoms like fuel leaks or excessive soot buildup in the exhaust, which often indicate an injector nearing failure in the OM651.
• Der deutsche Kaeufer (DACH) : Confirm the injector’s geometric variable geometry alignment to avoid misfires in engines equipped with advanced emission control systems.

Range comparison

The following table lists the exact injector references compatible with your Mercedes-Benz 350 BlueTEC 258 hp, including core deposit options and packaging formats for workshop efficiency.

How to choose

Selecting the right injector for the OM651 requires attention to compatibility, condition, and core handling. Below are the key criteria that separate a reliable exchange part from a temporary fix.

1. Verify the injector’s OEM reference against your engine’s build code to avoid mismatches in spray pattern or pressure rating.
2. Prefer units with a reconditioned CHRA (common-rail high-pressure assembly) for restored precision in fuel delivery and reduced risk of repeat failures.
3. Check the core deposit policy: some injectors include a refundable fee for returning the old unit, which lowers the net cost of replacement.
4. Inspect the packaging for tamper-evident seals and moisture barriers to ensure the injector arrives in optimal condition for immediate installation.
5. Confirm the injector’s electrical resistance and response time match the OM651’s original specifications to prevent ECU error codes.
6. Prioritize suppliers with a documented reconditioning process, including pressure testing and leak checks, for consistent quality across batches.
7. For fleets, select injectors with a documented rotation schedule to maintain uniform performance across multiple vehicles.

Storage & logistics

Store reconditioned injectors in a climate-controlled environment, away from direct sunlight and humidity, to preserve the integrity of seals and electrical connectors. For bulk orders, use original packaging or equivalent anti-static containers to prevent damage during transit. Label each unit with the engine code and model year to streamline warehouse retrieval. Avoid stacking heavy items on top of injector boxes, as this can deform the core or disrupt internal components. Always handle injectors with clean, dry hands or gloves to prevent contamination of the high-pressure ports.

Since 2026, our team has reconditioned thousands of OM651 injectors, refining the process to match Mercedes-Benz’s original tolerances. We don’t just sell parts—we deliver engineered exchange solutions that keep diesel systems running at peak efficiency.— autoKUR team

Related categories

Browse our other ranges:

• High-pressure pump
• 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.