Flghtmstr1
Member
Here's a more complete answer. The most common issue is the plastic coolant crossover cracking, which Ford was sued for. The fix is to use the later, 2001 and up intake with the aluminum crossover. Unfortunately, these plastic intakes are also known to crack at the rear, where the heater hose attaches. There is no "fix" for that issue, other than buying an aftermarket all-aluminum intake manifold.