Apply a new coat of underbody sealant after applying primer but before applying paint. Apply seam sealant before applying underbody sealant. Ensure that all floor panel plugs and rubber stoppers (except for the plugs covering the sealant holes) are in place before applying underbody sealant. Use a heat gun to re-insert all heat-set plugs or replace with rubber stoppers.
CAUTION: Before applying new underbody sealant, cover all suspension components, wheels, tires, powertrain, drive shafts, propeller shafts, exhaust system and brake assemblies (including all mounting points).
The area of application of the sealant on the bottom of the car is the floor panel

The area of application of the sealant on the bottom of the car is the niche for the spare wheel

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