Mazda 6 (GG/GY) RF7J Injectors

2.0L | 2002–2007

Engine Code

RF7J

Engine Size

2.0L

Production

2002–2007

Mazda 6 (GG/GY) RF7J Overview

The Mazda 6 (GG/GY) with the RF7J 2.0L engine was produced between 2002 and 2007. This vehicle uses DENSO common rail diesel injectors (primary part number DCRI107850) operating at fuel pressures up to 2000 bar. The RF7J engine in the Mazda 6 (GG/GY) produces and of torque. When replacing injectors on the Mazda 6 (GG/GY) RF7J, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

DENSO DCRI107850

DCRI107850 | 095000-5870 | 095000-7850 | 095000-8830 | 095000-5030

£170 inc. VAT

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Common Injector Problems in Mazda 6 (GG/GY)

•
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.
•
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.
•
Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
•
Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
•
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 Mazda 6 (GG/GY)

RF5C — 2.0L

View all RF7J compatible vehicles and injectors

DENSO 2.0L — browse compatible engines, vehicles, and injectors

Compatible Engines

RF5C Engine RF7J Engine

Compatible Vehicles

Recommended Injector

DCRI107850

DENSO — View product page

OEM Part Numbers

095000-5870 095000-7850 095000-8830 095000-5030 0950005870 0950007850 0950008830 0950005030 RF5C13H50 RF5C13H50A

Diesel Injector Knowledge Centre

Remanufactured, Reconditioned or Refurbished Diesel Injectors — What We Supply

Whether you searched for remanufactured, reconditioned or refurbished diesel injectors, the product here is the same: a professionally remanufactured injector, not a cleaned-up used part. Each unit is dismantled, inspected against the manufacturer's test plan, worn components such as nozzles and control valves are replaced where the bench results call for it, then it is calibrated, tested and supplied ready to fit with its coding data. We remanufacture in-house in the UK and deliver nationwide.

Is a reconditioned injector the same as a remanufactured one?

In UK trade language the terms are used interchangeably. What matters is the process: our injectors are fully remanufactured — dismantled, worn parts replaced where required, recalibrated on the test bench and covered by a 12-month warranty — rather than simply cleaned and resold.