Cheap Nissan Skyline Catalytic Converter

Yes, all road-legal Nissan Skyline variants sold in the UK were fitted with at least one catalytic converter as part of their exhaust emissions system. The R32, R33, and R34 generation Skylines all carry cats, and because these are imported Japanese-market vehicles (JDM imports) rather than cars originally type-approved for European sale, the specific emissions standards they were built to can vary considerably between individual cars. Always confirm the exact specification of any replacement cat with the breaker against your vehicle's registration or import documentation.

Yes, engine code is the single most important factor for catalytic converter fitment on the Skyline. The RB20, RB25, and RB26 engine families each have different exhaust configurations, and the turbocharged variants (including the twin-turbo RB26DETT in the GT-R) have additional pipework that affects cat placement and fitment. Give the breaker your exact engine code — found on the engine block — before agreeing to purchase.

These are distinct generations with different engine bay layouts and exhaust routing, so a direct bolt-on swap across the R33-to-R34 boundary is not guaranteed even where the same engine code appears in both. The R34 revised several underbody and exhaust components compared with the R33, so what looks visually similar may not align correctly. Treat this as strong confirm-with-breaker territory and have both your registration details and engine code to hand when you contact them.

No, trim level does not affect catalytic converter fitment — the cat is determined by the engine code and the emissions specification the car was built to, not by whether it is a GTS, GTS-T, GT-R, or any other variant. That said, do be aware that different trim lines in the Skyline range use genuinely different engines (for example, the GT-R uses the RB26DETT while GTS-T models use the RB25DET), so what appears to be a trim difference is often also an engine difference. Always confirm by engine code rather than trim name alone.

Yes, this is an important consideration. Because virtually all UK Nissan Skylines are JDM grey imports rather than European-specification cars, they were not originally built to Euro emissions standards, and replacement cats sourced from UK-spec vehicles of other Nissan models are very unlikely to interchange. When sourcing from a breaker, you ideally want a cat from another JDM Skyline of the same generation and engine code. Your breaker should also be able to advise whether the replacement unit will satisfy an MOT emissions test, as this is ultimately what matters for road legality in the UK.

A used cat in good condition from the correct engine and specification can pass an MOT emissions test, but there is no guarantee, particularly given the age of most UK Skylines and the fact that catalytic converter efficiency degrades over time. Because these are import vehicles without a standard European emissions classification, an MOT tester will assess the car's actual exhaust output rather than check a Euro standard label. Confirm with the breaker that the unit being sold is in serviceable condition and, where possible, ask about its provenance before buying.