F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
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Sound Proofing / Insulation: Description and Operation
INSULATION
Insulation is installed:
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under the roof.
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above and below the instrument panel (04304).
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at the cowl sides.
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over the transmission tunnel.
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over the floorpan areas.