* 4.2L Inline-6: This was a very common engine for the YJ Wrangler.
There were also less common options, but significantly less likely:
* 2.5L Inline-4: This smaller engine was also available, but less frequently found.
To know for sure what size engine *your* 89 Jeep Wrangler has, you should:
* Check your vehicle's paperwork: The title or original purchase documents might list the engine size.
* Look at the engine itself: The engine size is usually stamped on a part of the engine block (often near the valve cover).
* Check the owner's manual: If you still have it, this will definitely state the engine size.
* Look up your VIN: Using your Vehicle Identification Number (VIN) online through sites like a vehicle history website (though may require a fee) can provide detailed information including the engine.
Don't rely solely on guessing based on the model year. Confirming the engine size through one of these methods is the only way to be certain.
