These installation instructions are good for Prius Hybrid years 2004, 2005, 2006, 2007 and 2008.
You will need:
|– 12mm and 10mm sockets|
|– 5/8ths deep socket|
|– Tool to remove plugs|
|– Spark plugs to install (gapped to .040″)|
|– ~20 minutes|
First, remove the two 12mm bolts on the sides of the relay housing (marked in yellow) and it pulls back out of the way.
Next, remove the four 10mm bolts holding the individual coil packs in place (marked in green). Believe it or not, that’s all the bolts you have to remove to do this