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I've installed a few of these up here in Wisconsin. We haven't had any real starting problems without them, but I understand they will keep the engine "healthier" in an extreme cold start situation.
There are provisions in the front of the timing case coveron the passengers (right) side for an extra housing to be attached. The housing has the threaded hole for the block heater to be threaded into (similar to the type that screw in to the side of a block, say on an old Diesel motor). The are also 2 necks on the housing, one goes up to the waterpump, and a short hose is placed between this new housing and the pump. The other neck faces downwards, and a new lower radiator hose is attached to that. Then also the electrical cord is attached to the heater.
So all in all, you'll need the new housing and heater, an o-ring for the heater, the short connecting hose to the pump, the new style lower radiator hose, another set of hose clamps, self-tapping screws to attach the new housing to the timing case cover, and the electrical harness (cord). Takes about 1 hr to do it.
Gilly
ps This is the same procedure for any 112/113 motor, I believe only the new lower radiator hose differs in part number.
pps Please post ML questions in the ML forum.
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