wrs 120 Report post Posted September 1, 2019 My Vanos is tired and I have no ideal what state my oil pump is in + the front of the engine a rattling real nice... I'm looking for: 1. A M50/M52 Single Vanos Unit (11361748036). 2. A M50 Oil Pump (11411740154). Both will be rebuilt/reconditioned before being used. I also want to do an upper & lower timing chain, guide and tensioner replacement. Should sprockets also be replaced? Anyone know a good place to purchase timing chains kits? Thanks in advance. Quote Share this post Link to post Share on other sites