Overview
The Jeep 52005389 is a gas tank sending unit lock nut that fits 15 or 19 gallon gas tanks. The manufacturer fitment list covers the 1991–1995 Jeep Wrangler (YJ), 1997–2006 Wrangler (TJ) and 2004–2006 Wrangler (LJ) Unlimited.
Jeep part number 52005389 is a lock nut rather than a ring, so compare it with the nut currently on your tank before installing.
Key features
- Fits 15 and 19 gallon gas tanks
- Sending unit lock nut from Jeep
- Fitment list covers YJ, TJ and LJ Wrangler models
Lock nut versus lock ring
A sending unit lock nut clamps the unit to the tank opening and holds the seal in place, so its job is similar to a lock ring but the fastening method can differ. On YJ, TJ and LJ Wrangler models, the nut is usually reached through the tank opening, which makes it easy to drop or cross-thread if the unit shifts during removal. Check the nut’s threads and any flat faces before using it, since damaged threads can strip when tightened.
Buyers often confuse lock nuts with lock rings, so compare the shape and fitting method with the part you removed before ordering. Care for the nut is simple: keep the threads clean, avoid overtightening, and replace it if it cracks or bends. Gasoline vapor collects around the tank opening, so keep ignition sources away while the unit is out, and work in a ventilated area.
- Clean the threads before reinstalling
- Tighten evenly and avoid overtightening
- Replace the sending unit gasket at the same time
- Check for fuel odor after installation
Specifications
| Brand | Jeep |
|---|---|
| Part number | 52005389 |
| UPC | 70000432557 |
| Tank size | 15 or 19 gallon |
| Type | Gas tank sending unit lock nut |
Vehicle fitment
The manufacturer fitment list covers the 1991–1995 Wrangler (YJ) in several trims, the 1997–2006 Wrangler (TJ), and the 2004–2006 Wrangler (LJ) Unlimited and Unlimited Rubicon.
The 1991–1995 Wrangler (YJ) in several trims, the 1997–2006 Wrangler (TJ), and the 2004–2006 Wrangler (LJ) Unlimited and Unlimited Rubicon are covered. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Keep ignition sources away while the tank is open, since gasoline vapor collects around the opening.
What’s included
The title names only the lock nut. No sending unit, gasket or other parts are listed.






