Overview
The Crown Automotive CRO53010424 is a valve cover mounting bolt grommet for 4.0L engine models. It seals around the valve cover mounting bolts, helping keep oil from leaking at the bolt holes.
Because the grommet covers several Jeep generations, read the fitment section before choosing it.
Key features
- Made for 4.0L engine models.
- Mounting bolt grommet design for the valve cover bolt holes.
- Covers Cherokee XJ, Grand Cherokee ZJ and WJ, and Wrangler TJ and LJ entries.
- Manufacturer fitment is marked as direct fit.
Keeping valve cover bolts sealed
A valve cover bolt grommet sits at each bolt hole and compresses when the cover is tightened. That compression is what keeps oil from wicking up along the bolt and reaching the top of the engine. Grommets harden and flatten with age, so older ones often weep even when the cover itself is sound.
When the cover comes off, look at each grommet for cracks, hardening or flattening, and compare its height with a new one before reusing it. Clean the bolt holes and cover surface, then torque bolts evenly. Keep the cover and grommets as a set, since a worn grommet can make a good cover look like the leak.
- Inspect each grommet for cracks
- Clean bolt holes before reinstalling
- Tighten bolts evenly across the cover
- Replace grommets that have flattened
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | CRO53010424 |
| Part type | Valve cover mounting bolt grommet |
| Engine applications | 4.0L engine models |
| Fitment | Direct fit, per manufacturer |
Vehicle fitment
The manufacturer fitment list covers the 1996–2001 Jeep Cherokee (XJ), the 1996–1998 Grand Cherokee (ZJ) and 1999–2004 Grand Cherokee (WJ), the 2004–2005 Wrangler (LJ), and the 1997–2005 Wrangler (TJ), with trims shown in the list.
Wrangler JK models are not covered. Confirm your vehicle’s year, model and trim before ordering.
What’s included
The grommet is sold under part number CRO53010424. Check the package quantity against the number of valve cover bolt holes before installing.
