Bosch 0445110239 Diesel Injector

On the Bosch-supplied 1.6 HDi run, a failing injector typically presents in two distinct patterns. The first is the classic single-cylinder injector knock at warm idle, often described by drivers as a 'top-end tick' that mimics a worn cam follower. The second is a sudden hard-start episode that lasts five to ten seconds longer than normal — the rail bleeds prime overnight through a leaking injector seat. The third pattern, particular to the Bosch unit (rather than the later Continental DV6C), is intermittent stall at idle on hot restart after a short stop — caused by the seat seal failing as the unit thermally expands.

Because the Bosch 0445110239 was fitted earlier in the production run than the Continental DV6C primary, vehicles arriving at the workshop with this unit installed are usually 12-18 years old and well past 130,000 miles. The pragmatic diagnostic conclusion is that when one Bosch 1.6 HDi injector has failed, the other three are within twelve months of similar behaviour.

Engine code coverage spans PSA 9HW, 9HX, 9HV, 9HU, 9HZ early-run and the Ford-side HHDA / HHDB / G8DA / G8DB. UK fitment includes Peugeot 1007 / 207 / 307 / 308 / 3008 / Partner Mk2; Citroen C2 / C3 / C4 / C4 Picasso / Berlingo Mk2 / Nemo; Ford Fiesta MK6 / Focus MK2 / Focus C-Max / Fusion 1.6 TDCi (HHDA / HHDB); Mazda 2 (DE) / Mazda 3 (BK) 1.6 CD; Suzuki SX4 1.6 DDiS; Mini Cooper D R55 / R56 facelift earlier production; and Volvo S40 / V50 1.6D D4164T. Production runs 2004 to 2010, with a few late 2011-build vehicles still carrying the Bosch primary.

0445110239 is not interchangeable with the later Continental A2C59513556 DV6C primary. Confirm the OE marking on the unit you are removing before ordering — if your car is a 2010-onward build with a DV6C marking on the rocker cover, it most likely runs the A2C59513556 family instead.

0445110239 ships with a seven-character Bosch alphabetic correction string laser-etched onto the body cap. PSA's DiagBox / Lexia and Ford's IDS / FDRS both accept the string, but the menu pathing differs: on a 9HW / 9HX vehicle DiagBox uses the 'Calibration Réglages Injecteurs' page, while IDS for HHDA / HHDB Fiesta / Fusion exposes the equivalent under 'Powertrain → Fuel injection programming'. Skipping the write-back will throw a P0263 / P0266 / P0269 / P0272 cylinder-balance fault chain inside 100 miles and the small DPF will rapidly load while the ECU runs default trim values.

On this Bosch family — distinct from the later Continental DV6C — the format is alphabetic-only seven-character (no digits in the string). Diagnostic tools that expect a sixteen-character Continental IMA will refuse the entry; tools configured for the Bosch CRI calibration table accept it cleanly. Confirm your scanner is set to the Bosch profile before attempting the write-back on a 9HW / 9HX-coded engine.

Bosch CRI 0445110239 cores arrive on a much older average vehicle than later DV6C-era cores — typical core ages are 14-18 years, and the workshop-side wear we see reflects that. Carbon build-up at the seat is heavier; the copper washer that arrives with the core is rarely re-usable. Our Bosch-specific reflow process for this part starts with a longer-than-standard ultrasonic decarbon cycle and a seat-plate replacement on roughly 30% of cores rather than the under-10% rate we see on younger Bosch 2.0d builds.

The signature stamp is a fresh seven-character flow-correction code laser-marked on the body. Because most fitters arriving at this part number are working on a high-mileage older car, we offer a discounted four-pack price with matched-set bench traces — the labour to remove the injectors only once is the saving on a 14-year-old PSA / Ford 1.6 HDi.