An aftermarket replacement turbo cartridge (the centre assembly, also called a CHRA) for the BorgWarner K03 turbocharger on Opel’s 1.6-litre turbo petrol engine, as fitted to the Astra, Corsa, Insignia and Meriva. It is the part to replace when the turbo has worn but its housings are undamaged. Typical signs of a worn cartridge on this engine are a loss of power, boost that is slow to build, blue smoke, oil in the intercooler pipes, or a whistle or grinding sound from the turbo.
What this fits
| Make | Model | Engine | Years |
|---|---|---|---|
| Opel | Astra H | 1.6 Turbo 132 kW, Z16LET | 2007 – 2010 |
| Opel | Astra J | 1.6 Turbo 132 kW, A16LET | 2009 – 2015 |
| Opel | Corsa D (1.6 Turbo) | Z16LEL / A16LEL, Z16LER / A16LER | 2007 – 2014 |
| Opel | Insignia A | 1.6 Turbo 132 kW, A16LET | 2008 – 2017 |
| Opel | Meriva A (1.6 Turbo) | 1.6 Turbo 132 kW, Z16LET | 2005 – 2010 |
Turbo petrol only. This does not fit the non-turbo 1.6 petrol engines, or the diesel versions of these models. Years are a guide; the engine code and the number on your turbo’s label are exact. The same vehicles were also sold as Vauxhall in the UK.
Cross-reference numbers
This cartridge suits turbochargers carrying any of the following numbers:
53039700110 · 53039880110 · 53037100534 · 55355617 · 5860016
Making sure it is the right one
- Find the label on the turbocharger. It carries a BorgWarner (KKK) number and often an Opel number.
- Check the BorgWarner number reads 5303-970-0110 or 5303-988-0110, or that the Opel number reads 55355617 or 5860016.
- Check your engine code — it appears on the engine and in the service book — against the table above.
If the label on your turbo is missing or unreadable, contact us before ordering.




