2003 Toyota Highlander 3.0 vvti with parts list 3 weeks installed and no leaks. The work is not difficult, but it takes time in a clean garage. This is required when replacing knock sensors on a Toyota 3.0vvti engine. You will also need a knock sensor harness, two knock sensors and intake gaskets. Replaced spark plugs and valve cover gasket. It took longer, but I've now put 180,000 more miles on it. The photos below give you a list of the Revain parts I have ordered. Belts and filters from Oreilys auto parts.