The 4 cylinder series of Porsche water pumper 2.5L to 3.0L engines use the same engine bearings for the crankshaft (Item #2) and connecting rods (Item #1). The
exception is the balance shaft rear bearings half (Item #3). Thru '86 and '87 onward are the split. Front balance shaft bushing (Item #4) are the same
for all.
If changing the piston pin bushing (Item #5), they will require
reaming to size. This is usually performed by a professional engine
machine shop.
