This is a replacement Particulate Matter Detection System for compatible vehicles.It is designed to fit the Astra K Mk VII (2015–2019) equipped with the 1.6 CDTi engine models D16DTH, D16DTN, D16DTI, and B16DTR. Part numbers included: 55494711, 0281007106, 0281007107, 0281007106/107, 412596771, 1277022524. Type: PM Color: Black Material: Plastic Package includes: 1 x PM Note: Color appearance may vary slightly due to conditions and display settings.Dimensions are subject to a manufacturing tolerance of ±1–3 cm. This product is a third-party replacement.Any use of brand names or model designations is purely to indicate compatibility.