Review on Melling MPE-256BR Freeze Plug Kit: Comprehensive Solution for Engine Freezing Issues by Carlos Phillips

If you are a jeep 4.0 enthusiast don't expect this kit to replace all your spark plugs. Your 4.0 uses 5 2" connectors along the block on the driver's side. There are three additional connectors on the back of the motor. A 2" connector for the back of the cylinder head, a 2" connector behind the bell. - right below the one for your head. There are a total of seven 2-inch plugs. You only get 6 with this kit. The large (silver) metal connector you see in this kit goes a little lower and on the passenger side behind the bell. brass makeup. Good quality here, but you'll need to find a 2" plug to make your 4.0 complete. It is VERY unwise to replace all but one! Do not do that!