Secondary Air Injection Pump designed for use with 06A959253B and 06A959253E OEM specifications.Compatible with A3 models from 1996 to 2013, A4 B5/B6/B7, A6 C5/C6, A8L D3 from 2002 to 2010, Q7 4.2 from 2006 to 2010, and TT variants.This electric-operated pump supports the vehicle's by supplying additional air to the exhaust manifold during cold start conditions, aiding in faster catalyst activation and reduced emissions.Constructed using a combination of metal and plastic materials, the pump is built to endure typical operating stresses.The design incorporates performance-oriented engineering for function, with stable operational bandwidth that contributes to consistent output.Materials meet standards for thermal resistance, including performance under elevated temperatures up to 105°C.The unit offers direct fit replacement functionality, allowing integration into existing systems without modification.Suitable for various engine types across compatible models, including 1.6L and 4.2L configurations.Installation is straightforward, making it accessible for both professional technicians and DIY users seeking to maintain or restore emission system performance.This is an independent replacement component.References to brands or models are solely for compatibility indication.