Special Tools Needed
The water pump itself is straight forward.
However, you may need a special wrench for the tentioner, in order to take the belt off. Additionally, a water pulley caliper to stabilize the fan and a fan clutch wrench to remove the viscous coupling.
All tools can be purchased at the local NAPA dealer. I opted to uprate the viscous coupling as well using a NAPA Extreme Duty fan clutch (~$70.00).
Cheers,
1990 RRC, 3.9L, AUTO "Willow Pond" (Sold)
1996 D1, 4.0L, AUTO "Lucas"
1999 RR, 4.0L, AUTO "Belle" (Sold)