Cured my 2.4 D5 of chattering engine noise (from EGR valve?) / poor brake servo action / poor pickup. Relatively easy to fit too.
Clearly made from pure Unobtanium though...... Make sure you're sitting down before you look at the price (but to be fair it appears to be the same price everywhere)
Whilst you're fitting it, put some lube on your gear selector rods, you'll be glad you did 🙂