DOUBLE TWIN DUAL VANOS REPAIR RATTLE SEALS SET KIT FIX 3 5 7 Z3 Z4 X3 X5

Compatible with 6-cylinder engines M52TU, M56, and M54: 3 Series E46 - 98-05, 5 series E39 - 99-03, E60/E61 - 02-05, 7 series E38 - 98-01, E65/E66 - 02-05, Z3 E36 98-02, Z4 E85 02-05, X3 E83 03-06, X5 E53 00-06 Symptoms of this failure include; overall loss of power and torque particularly in the lower RPM range, loss of power with air conditioning on, louder idle, increased fuel consumption and difficult cold weather starts and even stalls. The seals fitted to the pistons within your vehicles Vanos unit wear prematurely because they are constructed of poor quality materials; causing loss of torque and power! The O-rings fitted to the pistons within the Vanos unit wear prematurely because they are constructed of poor quality Buna rubber which is not suited to the elevated temperatures of their location. The seals fail and lead to Vanos unit failure. It is also common for the Vanos unit to develop a rattle which can often be heard within the vehicles cabin. This rattle is caused by wear in the variable valve timing gears. This wear allows axial play and causes components to rattle Install our upgraded Viton seals and PTFE rings and restore your Vanos unit to full health for good. Our seals are specifically designed for the environment in which they are fitted, well suited to the vast temperature range of the Vanos unit.