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! If you drive a BMW 6 cylinder vehicle 1993-2006 your Vanos (variable valve timing unit) is most likely failing. 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. BMW do not provide replacement seals, they do provide complete Vanos units at vast expense but these again are fitted with the same poor quality seals that will fail again. 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. Removing the Vanos pistons axial play reduces this rattle significantly. Install our upgraded Viton seals and PTFE rings and restore your Vanos unit to full health for good. Designed to last the lifetime of your vehicle not the length of the manufacturer's warranty! By installing our improved design Viton seals and PTFE rings you will restore your Vanos unit to full health. Our seals are specifically designed for the environment in which they are fitted, well suited to the vast temperature range of the Vanos unit, constructed from improved materials designed to last. Our vanos piston rattle rings remove the axial play in the pistons reducing engine rattle sounds and wear. Compatible with BMW 6-cylinder engines M52TU, M56, and M54 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 3 series E46 - 98-05
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