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E46 Rear Subframe Reinforcement Kit<P>
The E46 rear driveline and suspension are very similar to that of the E36. An unfortunate side effect of this is that the E46 also shares
some of the same problems as the E36. One of these problems is the rear mounting points for the subframe, which can rip out from
their spots in the sheet metal (see figure 1). This happens because the rear differential transmits the torsional load from the engine
through the subframe, then into the chassis. This constant loading and unloading weakens the sheet metal and causes it to fatigue and
separate from the chassis. BMW tried to fix this problem in the E46 by placing a cross member on the front two mounting points of
the subframe. This cross member keeps the front mounting points from having problems by placing the bushing and the stud in
double-sheer, thus reducing the twisting action on the sheet metal. The unfortunate side effect of this is that the load from the front of
the subframe now gets transmitted to the left rear of the subframe. This is where we have seen many failures of the chassis on low
mileage street cars and race cars.
This product reinforces the chassis sheet metal at the subframe mounting points. We do this by thickening the metal and distributing
the load over a larger area. This kit will save time when repairing the chassis, and is also strongly recommended as a preventative
maintenance item.
平板模式
