The recommended interval to change the spark plugs on a Prius is 120,000 miles.

Follow the video tutorial by YouTuber NutzAboutBolts to complete the swap yourself.

Video Instructions


To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.


Member since: 05/19/2017

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are the torque specifications for the spark plugs 15lbs? where did you get the specifications from? do the other bolts on the rest of the parts removed have torque specifications? they must have a torque requirement since everyone has different “it’s tight enough” opinions. I just don't want to overtighten and damage things. It was a good video and instruction. I didn't think it would be that involved to just get to the plugs, but it’s good you put this together for everyone.

lucky.777 - Reply

Hi Lucky.777, if you click on the YouTube video the torque specs are listed in the descriptions.

Torque specs:

10 ft. lbs - Wiper arms

6 ft. lbs - Wiper motor mount bolts

9 ft. lbs - Cowl sub assembly bolts

13 ft. lbs - Spark plugs

8 ft. lbs - ignition coil bolts

Blake Klein - Reply

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