Average Reviews:
(More customer reviews)Visually, the quality of the Dorman 615-175 intake's material and workmanship seems to be better than the Ford stock intake on my 2001 Mustang GT. The Dorman intake uses an aluminum crossover as opposed to the unreliable plastic crossover on the Ford stock intake (Ford corrected this problem in 2002). The Dorman intake also uses integrated O-rings instead of traditional gaskets, which simplifies installation and probably improves reliability (traditional gaskets is that they have a tendency to trap coolant between the gasket and aluminum cylinder head on the Ford 4.6 liter engine. Over time, trapped coolant can eat away the aluminum).
Although installation required many steps, it was straightforward. I purged the fuel pump, disconnected the battery, drained the radiator, and removed the following: upper radiator hose, temp sensor, alternator, intake plenum, throttle, EGR, fuel injectors, ignition coils, and some emission hoses. After I installed the Dorman intake, my car ran beautifully.
Couple of weeks later, I decided to change the spark plugs. However, I unpleasantly discovered that the Dorman intake partially obstructed 2 spark plug holes on the passenger side (the rear 2 spark plugs next to the intake passages marked with torque sequences 4 and 8). The obstruction was enough to block out my Craftsman 5/8 spark-plug socket, which means that changing these 2 spark plugs would require removal of the intake manifold again ... an unreasonable expectation. This problem did not exist with the Ford stock intake.
If it weren't for this flaw, I would rate this product with 5 stars.
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1999 Ford Mustang GT 4.6L V8 2V SOHC Intake Manifold
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