How to use: First, make sure this engine mount kit fits your 2005 - 2012 Lotus Exige / Elise with a 2ZZ - FE engine. It's best to have a mechanic or automotive specialist install it for you. They'll replace the old mounts with the ones in this kit. Note: Once the mounts are bolted down, they can't be returned or swapped. So, double - check the fit before installation. Also, since these mounts are for performance driving, you might feel a little vibration depending on your engine. Maintenance: These mounts are built to last with a lifetime warranty. But you should still check them regularly for any signs of wear and tear. If you notice any issues, contact the manufacturer.