Anyone can let us know how different between the Dimensions of 2 parts number. Image Unavailable, Please Login
According to Ricambi: - 117973 is for a USA 308QV and all 328s. - 111888 is for non-USA 308QV, Mondial 3.2, and Mondial QV.
On my 1983 US-spec QV, the length, measured bolt center to bolt center, is 243 mm. The internal width of the engine-side bracket is 47 mm. The width of the rear bushing is also 47 mm. If someone (else) measures the other type, you'll have your answer.
These are the dimensions on my 87' 328 GTS Euro model: Overall Length 290mm Bolt centre to centre 245mm Length of U bracket 75mm Inner width of U bracket. 47mm Inner width of Bush Bracket 45mm Length of steel shaft joining U Bracket and Bush 163mm Hope this helps..