Seat Leon BKC Injectors

Seat Leon BKC Overview

The Seat Leon with the BKC 1.9L TDI PD engine was produced between 2005 and 2010. This vehicle uses Bosch common rail diesel injectors (primary part number 038130073BN) operating at fuel pressures up to 2000 bar. The BKC engine in the Seat Leon produces and of torque. When replacing injectors on the Seat Leon BKC, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

Common Injector Problems in Seat Leon

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  Rough idle and engine vibration — Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
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  Excessive exhaust smoke — Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
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  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
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  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
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  Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.

Other Engine Codes for Seat Leon

Other BKC Vehicles

Related Pages

Bosch 1.9L TDI PD — browse compatible engines, vehicles, and injectors