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4X21 FLOOR AND TUNNEL SHIELD

4X21 FLOOR AND TUNNEL SHIELD

$79.75
$79.75
Sale Sold out

The 4X21 FLOOR AND TUNNEL SHIELD is a thermal and abrasion barrier designed to protect the vehicle floorpan and transmission tunnel from exhaust heat, road debris, and mechanical damage. Available at GodsMods, this shield improves cabin comfort and protects critical underbody components.

Fabricated from 0.040-inch or 0.060-inch thick aluminum or galvannealed steel with integral formed stiffening ribs and pre-drilled mounting holes. The reflective surface reduces radiant heat transfer from the exhaust system into the passenger cabin by up to 50 percent.

Essential for vehicles with aftermarket exhaust systems, body drops, or lifted suspension where the exhaust runs closer to the floorpan than factory. This shield also provides a clean, finished appearance to the underbody and protects the floorpan from stone chip damage.

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Frequently Asked Questions

How effective is the Atech heat and sound barrier at reducing cabin temperature and noise?

The Atech heat barrier can reduce under-hood or exhaust tunnel temperatures by up to 50 to 70 percent depending on the thickness and installation coverage. It also provides significant sound deadening reducing road and exhaust noise by 10 to 20 decibels in the affected areas. The Atech material uses a dense mass-loaded vinyl or ceramic fiber construction for maximum thermal and acoustic performance. Proper installation with complete coverage and sealed edges yields the best results.

Can I install the Atech heat shield on my transmission tunnel or firewall myself?

Yes, the Atech heat shield is designed for DIY installation using common hand tools and the included adhesive or mechanical fasteners. The material can be cut with scissors or a utility knife to fit the specific contours of your transmission tunnel or firewall. Clean the surface thoroughly and apply the Atech material with overlapping seams for complete coverage. Allow the adhesive to cure for 24 hours before exposing it to high temperatures.

What thickness of Atech heat barrier should I use for my street car or race car?

The recommended thickness of the Atech heat barrier depends on your application and available space. A 1/4-inch thick Atech barrier is sufficient for most street cars where heat reduction and sound damping are the primary goals. Race cars benefit from thicker 1/2-inch or 3/4-inch Atech material installed near exhaust components and transmission tunnels. Thicker Atech barriers provide greater thermal protection but require more installation space.

Can the Atech sound deadening material be installed under carpet without adding excessive weight?

The Atech sound deadening material is designed to provide maximum acoustic damping with minimal weight added to your vehicle. A typical installation adds 15 to 30 pounds total depending on coverage area and material thickness. The Atech material is thin enough to fit under factory carpet without interfering with pedal operation or seat mounting. This makes the Atech solution ideal for vehicles where weight savings are a priority.

Does the Atech heat barrier also protect against exhaust burns on interior panels?

Yes, the Atech heat barrier provides excellent protection against burns and heat damage to interior panels near exhaust components. The material reflects radiant heat and insulates against conductive heat transfer through the floorpan or firewall. The Atech barrier is self-extinguishing and will not support combustion if exposed to direct flame. This safety feature is especially important in race cars and off-road vehicles where interior heat protection is critical.