Just bought a mazda 6 and the wool looking stuff
connected to the underside of the engine cover is
falling off everywhere, was wondering if it needs to
be on there and if so where can I buy it.
You don't need it- it is just insulation to keep the engine heat off the paint job on your hood- like that paint job or even the car will last longer than 20 years! lol
The insulation is also for sound deadening but like jamnblues says you don't really need it.
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