To find it, you'll need to:
1. Consult your Jeep's repair manual: This is the best resource. The manual will have diagrams showing the engine's components and their locations.
2. Use a reliable online parts diagram: Many websites (like auto parts stores' websites) allow you to select your Jeep's year, make, and model, and then view diagrams of the engine. Look for "oil pressure sender," "oil pressure switch," or "oil pressure sensor."
3. Look near the oil filter: It's often located in this general vicinity, but not always.
4. Search online forums specific to your Jeep model and year: Owners often post photos and discussions about repairs and part locations. Searching for "[Your Jeep Year, Make, Model] 2.5L oil pressure sending unit location" will likely yield results.
Without knowing the specific year and model of your Jeep, giving a precise location is impossible. Be sure to consult your repair manual or a parts diagram before attempting any work on your vehicle.