Used Nissan Skyline Lambda Sensor

Yes, lambda sensors (also called oxygen sensors) were fitted to Nissan Skyline variants sold with catalytic converters, which applies to later road-legal imports and any officially emissions-compliant versions. However, the Skyline was never officially sold new in the UK through standard dealer channels, so virtually all UK examples are grey imports, most commonly the R32, R33, or R34 generations brought in from Japan. Whether your specific car has a functioning lambda sensor in the conventional sense depends heavily on the engine variant, any modifications made, and what emissions equipment was fitted to that particular Japanese-market car before import.

The R32 (1989–1994), R33 (1993–1998), and R34 (1998–2002) are the generations most commonly found in the UK grey import market, and later examples from each generation are more likely to retain lambda sensor provisions as Japanese domestic emissions standards tightened over time. The RB-series engines (RB20, RB25, RB26) are the most common, and naturally aspirated variants are arguably more likely to have standard lambda sensor setups than heavily modified turbocharged versions where the exhaust system may have been altered. When contacting a breaker, always confirm the exact engine code and whether the car retains its original exhaust and emissions equipment, as modifications are extremely common on these vehicles.

The R33 (1993–1998) and R34 (1998–2002) share the RB-series engine family, and some sensors may share the same thread pitch and connector, but the exhaust routing, sensor position, and engine management calibration can differ between generations and engine variants. Crossing the R33-to-R34 boundary is strong confirm-with-the-breaker territory — give the breaker your engine code (e.g. RB25DET, RB26DETT) and sensor position (pre-cat or post-cat) so they can compare against the donor vehicle. Never assume physical similarity guarantees compatibility, especially on a grey import where previous owners may have altered the exhaust.

Yes, it matters significantly — the GT-R uses the twin-turbo RB26DETT engine while the GT-T uses the single-turbo RB25DET, and these are different engines with different exhaust manifolds, different sensor positions, and potentially different sensor specifications. Trim level in the sense of interior or cosmetic specification does not affect lambda sensor fitment, but the engine variant absolutely does, so always quote your engine code to the breaker rather than just the trim name. Sourcing an RB26DETT sensor for an RB25DET car (or vice versa) risks an incorrect fit even if the connector looks similar.

This is very common on UK Skylines and it genuinely complicates sourcing, because an aftermarket exhaust may use a different bung position, thread size, or may have removed the sensor provision entirely if the owner was running without a cat. You need to check whether your car still has a lambda sensor bung in the exhaust and, if so, whether it matches standard dimensions for your engine code — a breaker can supply the correct OEM-spec sensor, but fitting it depends on your exhaust setup. If the sensor location has been modified, you may need a universal lambda sensor or a fabricator to weld in an appropriate bung rather than a direct OEM replacement.

Some RB-series engines share sensor specifications with other Nissan models of the same era, and cross-compatibility is possible in some cases, but this is firmly confirm-with-the-breaker territory given the grey import nature of UK Skylines and the frequency of modifications. Tell the breaker your exact engine code, the sensor position (upstream or downstream of the catalyst), and the connector type, and they can advise whether a sensor from another RB-engined donor vehicle is a known match. Do not assume compatibility based on engine family alone, as sensor calibration and connector design varied across model years and markets.