The Engine Capacitor is a mission item in Borderlands 2
You need to find it in the mission My Life for a Sandskiff after talking to Lionel
It drops from Sand Worm Queen near the Oasis Docks
Description[edit]
This Engine Capacitor looks like it's ready to explode at any moment. Let's install it!
Location[edit]
Town of Oasis on some wrecked car