Cheap Vauxhall Astra Catalytic Converter
Get quotes for a used or replacement Vauxhall Astra catalytic converter. Genuine second hand parts from UK vehicle dismantlers - free request, breakers with stock reply direct.
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Buying a used Vauxhall Astra catalytic converter: what matters
Fitment on a used catalytic converter varies by vehicle, so a bit of detail goes a long way. Our request form covers what breakers need to know, so every quote you get back is for the correct part:
- State whether it's petrol or diesel
- State the engine code if known
Other used Vauxhall Astra parts
- Used Vauxhall Astra EGR Valve
- Used Vauxhall Astra Lambda Sensor
- Used Vauxhall Astra DPF
- Used Vauxhall Astra Exhaust System
- Used Vauxhall Astra Brake Master Cylinder
- Used Vauxhall Astra Steering Column
- Used Vauxhall Astra Propshaft
- Used Vauxhall Astra Drive Shaft
- Used Vauxhall Astra Front Bumper
- Used Vauxhall Astra Brake
- Used Vauxhall Astra Gearbox
- Used Vauxhall Astra Flywheel
Used catalytic converter for other Vauxhall models
Fitment questions
Does a Vauxhall Astra have a catalytic converter?
Yes, all petrol-engined Vauxhall Astras are fitted with a catalytic converter as standard, and diesel variants use a diesel oxidation catalyst (DOC) as part of their exhaust aftertreatment system. The exact configuration depends on the engine code and the emissions standard the car was built to, so the part you need will vary depending on your specific model year and fuel type.
Will an Astra H catalytic converter fit an Astra J?
The Astra H ran from 2004 to 2009 and the Astra J from 2009 to 2015, and these are entirely different generations with different engine families, exhaust layouts, and emissions calibrations, so parts are not interchangeable between them. Even where engine displacements look similar on paper, the engine codes differ and the emissions era (Euro 4 for most Astra H, Euro 5 for Astra J) means the catalyst specification will not match. Confirm any cross-generation part against your registration with the breaker before purchasing.
Does the trim level affect which catalytic converter I need — for example, does an Astra J SE need a different cat to an Astra J Elite or SRI?
Trim level does not affect which catalytic converter your Astra J requires — what matters is the engine code, fuel type, and the emissions standard the car was built to, all of which are shared across trim variants fitted with the same engine. An SE, SRI, and Elite with the same engine code will take the same cat, though expect minor cosmetic differences in surrounding exhaust components between cars with and without sports exhaust options. Always confirm the engine code and registration with the breaker to make sure you get the correct unit.
Will an Astra J pre-facelift catalytic converter fit a post-facelift Astra J?
The Astra J received a facelift in 2012, and while many mechanical components carried over, emissions calibration updates and engine code revisions around that period mean you should not assume a pre-facelift cat will be a direct swap onto a post-facelift car. The year boundary is close enough to the Euro 5 calibration period that subtle differences in catalyst specification are possible. Give the breaker your full registration so they can check the engine code and confirm compatibility before you commit.
Does a 1.6 petrol Astra K catalytic converter fit a 1.4 turbo Astra K?
No — the 1.6 and 1.4 turbo engines fitted to the Astra K (2015 onwards) carry different engine codes and have different exhaust and emissions configurations, so their catalytic converters are not interchangeable even though both are petrol engines in the same generation. The Astra K was built to Euro 6 standards throughout, but the specific catalyst required is determined by the engine code rather than the generation alone. Always quote your engine code and registration to the breaker to ensure you get the right part.
Can I use a catalytic converter from a diesel Astra on my petrol Astra?
No — petrol and diesel Astras use completely different exhaust aftertreatment systems; a petrol engine uses a three-way catalytic converter, while a diesel uses a diesel oxidation catalyst and, on later Euro 5 and Euro 6 models, a diesel particulate filter (DPF) as well. Fitting the wrong type will not work correctly and will cause an MOT failure. Always make clear to the breaker whether your car is petrol or diesel, and confirm the engine code, so they can supply the correct component for your vehicle.