DEI Reflective Aluminum Dimpled Sheet - 42in x 48in - 10043 - DEI10043

The DEI Reflective Aluminum Dimpled Sheet (Part # 10043) is a large-format, 10-mil custom heat shield material measuring 42 inches by 48 inches — giving you nearly 14 square feet of premium aluminum sheeting to fabricate a heat shield sized and shaped exactly to your application. Whether you're protecting a floor pan, tunnel, fuel lines, wiring harness, or any other heat-sensitive component in your vehicle's engine bay or undercarriage, this dimpled aluminum sheet delivers the same reflective aluminum facing DEI uses in their own proven Floor & Tunnel shield products.

Key Features & Benefits

• Same material as DEI's production shields: This is the identical aluminum facing used in DEI's Floor & Tunnel Shield II, so you're working with a proven, real-world heat management material — not a generic substitute.
• Reflects AND blocks heat: The dimpled aluminum surface both reflects radiant heat away from sensitive components and acts as a physical barrier to block conducted and convected heat — a dual-action approach that generic flat sheeting can't match.
• 10-mil thickness — thin enough for tight spaces: At just 10 mils thick, this sheet is slim enough to fit into cramped engine bays, floor tunnels, and undercarriage areas where bulkier heat shielding simply won't fit.
• Easy to cut and form: The aluminum sheet can be cut with standard shop tools and bent or formed to virtually any shape needed, making it ideal for one-off custom fabrication projects where no off-the-shelf shield will do.
• Large 42 in. x 48 in. sheet: The generous dimensions mean you have plenty of material for complex, large-area shields or multiple smaller pieces from a single sheet.
• Compatible with DEI Universal Standoff Kit (10224): DEI recommends pairing this sheet with their standoff kit for clean, rattle-free mounting — no improvised hardware needed.
• Dimpled surface adds rigidity: The dimpled texture increases structural stiffness compared to flat aluminum of the same thickness, helping finished shields hold their shape after forming.

Specifications

• Brand: DEI (Design Engineering, Inc.)
• Part Number: 10043
• UPC: 607078100436
• Dimensions: 42 inches x 48 inches (approximately 14 sq ft of material)
• Thickness: 10 mil
• Material: Dimpled reflective aluminum
• Proposition 65: Yes (California residents — see product listing for details)

Fitment

The DEI 10043 Reflective Aluminum Dimpled Sheet is a universal fabrication material — it is not vehicle-specific and does not require a year/make/model match. It is suitable for any automotive, motorsport, off-road, or marine application where a custom heat shield is needed. Common use cases include:

• Custom floor and tunnel heat shields for any vehicle
• Exhaust tunnel heat barriers on turbo builds and high-performance street cars
• Protecting fuel lines, brake lines, or wiring running near exhaust components
• Fabricating firewall heat shields for engine swap projects
• Any application where an off-the-shelf DEI shield doesn't match your specific chassis or custom fabrication

Because this is raw sheet material, there are no fitment restrictions by vehicle — it fits wherever you make it fit.

What's in the Box

• One (1) DEI Reflective Aluminum Dimpled Sheet — 42 in. x 48 in., 10 mil

Note: The DEI Universal Standoff Kit (part # 10224) is sold separately and recommended for mounting finished shields.

Why Buy from ThreePiece.us

ThreePiece.us offers free shipping on every order, so your DEI dimpled aluminum sheet ships to your door at no added cost. Need to spread out the purchase? Financing is available through Affirm, letting you get your heat management project started today. Our team has served over 10,000 customers with expert fitment and product guidance — if you have questions about which DEI heat shield material is right for your build, contact our specialists directly for a personalized recommendation.

Frequently Asked Questions

Q: What is this sheet used for?

A: The DEI 10043 is raw material for fabricating custom heat shields. You cut and form it to whatever shape your application requires — floor pans, transmission tunnels, firewall sections, or anywhere else you need to reflect and block heat from sensitive components.

Q: Is this the same aluminum used in DEI's pre-made shields?

A: Yes. DEI states this is the same aluminum facing used in their proven Floor & Tunnel shields, so you're getting production-grade material for your custom fabrication.

Q: What do I need to mount a finished shield made from this sheet?

A: DEI recommends using their Universal Standoff Kit (part # 10224) for easy and secure mounting. The standoff kit is sold separately.

Q: How thick is the sheet, and can I cut it with standard tools?

A: The sheet is 10 mils thick. According to DEI's product description, it is easy to cut and form to most any shape needed, making it workable with typical fabrication shop tools.