There are three on each side, they are in line with each cylinder bore. One on each end of the cylinder heads. They are not easy to do with the engine in the vehicle because of all the things bolted around them. In general you would be replacing them from under the truck.
Image (Click to make bigger)
Was this
answer
helpful?
Yes
No
Saturday, February 14th, 2026 AT 10:02 PM
KEN L
MASTER CERTIFIED MECHANIC
54,872 POSTS
Here is a video that will show you how to install them.