Where are spark plugs on jeep wrangler 2003?

The spark plugs on a 2003 Jeep Wrangler (assuming it has the 2.4L or 4.0L engine, the most common for that year) are located on the top of the engine. However, to be more precise:

* You'll need to remove the plastic engine cover to access them.

* They're arranged in a line along the valve cover, one for each cylinder.

To be absolutely certain and for safety, it's highly recommended to consult your Jeep Wrangler's owner's manual. It will have diagrams showing the exact location of the spark plugs and provide detailed instructions for replacement. You can also find diagrams online by searching "2003 Jeep Wrangler spark plug location [2.4L or 4.0L engine, depending on your model]". Use caution and always disconnect the negative battery terminal before working on your engine.