Used Nissan 350Z Catalytic Converter

Yes, every Nissan 350Z sold in the UK was fitted with catalytic converters as standard — the 3.5-litre V6 VQ35DE engine runs two cats, one on each exhaust bank. Because the 350Z is a naturally aspirated petrol engine with no diesel or hybrid variant, catalytic converters were present on all UK examples rather than being limited to a specific drivetrain or fuel type.

The 350Z ran from 2003 to 2009 in the UK, with a facelift arriving around 2006 that brought subtle changes to the exhaust system alongside other updates. The VQ35DE engine continued throughout, but whether the pre-facelift and post-facelift cats interchange correctly is something you must confirm with the breaker against your specific registration, as differences in pipe routing, sensor positions or emissions calibration can affect direct fitment and MOT compliance.

Trim level does not affect catalytic converter fitment on the 350Z — GT, Touring and base-specification cars all share the same 3.5-litre VQ35DE engine and the same basic exhaust architecture, so trim is not a factor when sourcing a cat. Be aware cosmetic differences around the rear bumper or exhaust tips may vary between trims, but the catalytic converters themselves sit upstream of those differences. Always confirm the part against your registration with the breaker rather than relying on trim name alone.

Japanese-market 350Z (Fairlady Z) models were sold to different emissions standards and may have different cat specifications, oxygen sensor configurations or pipe dimensions compared with UK-market cars. A cat from a grey import could fail to fit correctly or cause your car to fail MOT emissions testing even if it looks physically similar. Confirm with the breaker whether the part they have came from a UK-registered car or a Japanese-market vehicle before purchasing.

The 350Z's VQ35DE V6 has two cylinder banks and runs two catalytic converters, one per bank, typically referred to as nearside (NS) and offside (OS). You do not have to replace both at the same time if only one has failed, but breakers will often have them listed individually or as a pair, so it is worth specifying which side you need when requesting a quote. Confirm the exact side and sensor port count with the breaker against your registration to make sure you receive the correct unit.

A used catalytic converter from a 350Z can pass an MOT provided it is not damaged, not clogged, and comes from an equivalent emissions-era vehicle — sourcing a cat from a car of a significantly different year could affect how the engine management system reads sensor data and whether the car passes the emissions test. Confirm with the breaker that the part came from a car of a similar year and specification to yours, and have it fitted and checked by a mechanic before your next MOT.