Citroen 1.5 BlueHDi. Thrust Pads (1). Piston Rings (182). This change effectively increased the chain's width, making it more robust and less susceptible to premature wear and elongation. Includes fitting kit as pictured, Gaskets, Seals, Injector Bolts & Seals, Lifters, Rockers, Timing Belt Kit & Water Pump.