I re-used mine about 2 years ago... hasn't leaked yet... Of course, YMMV.
Good luck!

The 6-mm socket head bolts sound familiar too... I ended up shortening an
allen wrench by about a quarter-inch to be able to get it into one of these
right below the pump.

I don't remember if I *had to* pull my distributor, or if I just pulled it
to replace the o-ring on that (a little bit of oil was leaking in the the
area... still is, must be the fuel-pump block-off)

At 02:50 PM 3/4/2005 -0800, roger sisler wrote:
>Can any one tell me if I can reuse that plastic o-ring on the upper water
>crossover pipe?Cant find a new one anywhere , or any vendor who knows what