The block is the same however there are some major changes to the ignition system.
The 1998 TJ 4.0L uses a distributor and an external coil mounted to the side of the block, where as the 2001 uses a cam position sensor and a coil rail that is mounted to the engine and attaches directly to the spark plugs.
I also believe that the A/C compressor is also relocated from the passenger side to the lower driver side of the belt pulley configuration.
Yes it will.
The 2001 Jeep Wrangler has 8 valves.
The 2001 Jeep Wrangler is a gas-powered vehicle.
The 2001 Jeep Wrangler has an inline 4 engine.
The 2001 Jeep Wrangler has a 5-speed manual.
The 2001 Jeep Wrangler has overhead valves (OHV).
Where is the resistor on 2001 jeep wrangler
NO
The height of the 2001 Jeep Wrangler is 5 ft. 11.1 in. (71.1 in.).
The 2001 Jeep Wrangler runs on regular unleaded.
The 2001 Jeep Wrangler's turning circle is 32.8 ft..
The 2001 Jeep Wrangler is 12 ft. 11.4 in. (155.4 in.) long.