Overview
The Crown Automotive J4007570 is a flanged Grade 8 body bolt, 7/16 inch-14 x 2-3/4 inch, used at the grille mount and rear body mount locations. Five are required. It fits 1987–1995 Jeep Wrangler (YJ) and 1997–2006 Jeep Wrangler (TJ) models, including several Base, Sport, Sahara and Rubicon trims.
This bolt carries a Grade 8 strength rating.
Key features
- Flanged head
- Grade 8 rating
- 7/16 inch-14 thread size and 2-3/4 inch length
- Used at the grille and rear body mount positions
- Five required per vehicle
Torque and thread care
Body bolts carry steady load and see vibration, so their threads and seating surfaces matter as much as the strength rating. A Grade 8 bolt should be tightened with a torque wrench set for the application, and the vehicle should be supported securely while working underneath. Under-tightened body bolts can loosen and let the body shift, while over-tightening can strip threads in the frame or bracket.
Inspect threads for rust or damage before installing, and replace any bolt with rounded or galled threads. Keep the five bolts sorted by position so each returns to its original hole. After the first few drives, recheck torque, since body hardware can settle as the new parts seat.
- Use a torque wrench for the application
- Inspect threads before installing
- Keep bolts sorted by position
- Recheck torque after the first drives
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J4007570 |
| UPC | 848399089424 |
| Application | Grille mount and rear body mount |
| Quantity required | 5 |
| Size | 7/16 inch-14 x 2-3/4 inch |
| Head | Flanged |
| Grade | Grade 8 |
Vehicle fitment
It fits 1997–2006 Jeep Wrangler (TJ) models, including 65th Anniversary Edition, Rubicon, SE, Sahara, Sport and X trims, and 1987–1995 Jeep Wrangler (YJ) models, including Base, Islander, Laredo, Renegade, Rio Grande, S, SE, Sahara and Sport trims.
Not covered: Wrangler JK (2007–2018) and CJ models are not in this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Five bolts are needed across the grille and rear body mount positions, so count the hardware before starting. Use a torque wrench sized for Grade 8 hardware and support the vehicle securely while working under it.
What’s included
Five bolts are required. Check the package contents against your installation before starting.
