1 x Inlet (Intake) Camshaft Sprocket – Compatible with OE No: CM5G6C524DB. 1 x Exhaust Camshaft Sprocket – Compatible with OE No: E3BG6C525BA / CM5G6C525DB. Replacing both inlet and exhaust sprockets together ensures smooth operation and proper synchronisation with your VCT (Variable Cam Timing) system.