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If you are a Jeep 4.0 guy, don't expect this kit to replace all of your plugs. Your 4.0 will use 5 each of the 2" plugs along the driver's side of the block. There are three additional plugs on the back of the engine. One 2' plug for the back of your cylinder head, one 2" plug behind your bellhousing-directly below the one for your head. That's seven 2" plugs total. You only get 6 with this kit. The larger metal (silver) plug you see in this kit goes slightly lower and to the passenger side, behind the bellhousing. It is an oil passage, hence it's non-brass makeup. Good quality stuff here, but you must go out and find a single 2" plug to completely do your 4.0. Its is VERY unwise to replace all but one! Don't do that!!!
Doing a head replacement on the infamous Jeep 4.0L inline six, I discovered the core plugs were rusted through and had holes. After replacing the cylinder head due to cracks (big surprise on a 4.0) and head gasket, radiator, hoses (both radiator & heater) and many, many flushes, the rust gave way to holes. I wanted brass freeze plugs because they don’t rust like steel does and only cost about 30-40% more. Do it right and do it once. I just wish I had the square drive socket to replace the block drains. Ah, another Amazon tool purchase...
Worked as advertised. Perfect match for 2004 Jeep Grand Cherokee Special Edition, 4.0L, AT, 2wd. Note that there are two freeze plugs located on the back of the engine block under the transmission bell housing. One of these is oversized (i.e.: not standard size). This kit contains all plugs and lug-plugs needed including the one oversized freeze plug that is a special order item if ordered separately.
This plug was larger in diameter than what came out of my 1997 Jeep Wrangler 4.0 liter 6 cylinder. I cleaned the plug hole and put the plug in the freezer but it was not going to fit. When placed side by side with the original you could see the diameter difference (small, like half the thickness of a dime but enough so it would not fit.) I went to AutoZone and got a set there that went in perfectly. The plug itself seems fine quality, giving one star due to not fitting the car it said it would.
This did not fit my 2000 jeep xj 4.0. The diameter of these measured about 2.040". The old ones measure about 2.004". After 10 minutes of trying to get it to fit, I measured them. Bought ones at autozone that were identical size to the old ones and fit right in