Front pads on the ZJ wear faster than the rears because the system is biased forward. Plan on 2 hours for both sides if it's your first time, 45 minutes once you've done it. Always replace pads in axle pairs — never one side.
The ZJ uses a single-piston floating caliper up front, the same basic design as the XJ Cherokee and TJ Wrangler. Pads run $25–$45 a set; rotors $60–$100 a pair. Don't cheap out on rotors — the bottom-tier $25/rotor specials warp within a year in Phoenix heat or any city driving with frequent hard stops. Centric or Bosch coated rotors hold up.
Wagner ZD436, Bosch BC436, and Akebono ACT436 are all solid pad choices. Avoid the lowest-tier organic pads on a ZJ — the rotors are heavy enough that organic pads glaze quickly and start squealing within 5,000 miles. Semi-metallic is the right pad family for a 4,000-lb SUV that gets driven hard.
Before you start: pump the brake pedal a few times with the engine off to bleed pressure off the system, crack the master cylinder cap (helps the caliper piston retract without forcing fluid backward), and have a friend or some shop towels nearby because new-pad break-in always involves a couple of "interesting" stops.
| Part | Vendor | Est. price |
|---|---|---|
| Front brake pads (semi-metallic) | Wagner / Bosch / Akebono | ~$35 |
| Front brake rotors (pair) | Centric / Bosch / Raybestos | ~$70 |
| Brake grease (silicone) | Permatex | ~$6 |
| Brake cleaner (aerosol, non-chlorinated) | CRC, Berryman, any auto parts store | ~$8 |
Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.