DEI DEI Floor and Tunnel Shield II 42in x 4ft - 14.0 sq ft
Universal fit Not vehicle-specific
Fitment notes- Authorized dealerGenuine DEI parts, sourced direct
- 30-day returnsSee the return policy
- Diesel techs on the line908-223-9744, call or text
- Secure checkout
Floor & Tunnel Shield II(TM) solves the problem of needing a high heat barrier to block heat from any source intruding into interiors and damaging components and electronics. Use as a barrier to reflect and insulate from any heat source. Designed to provide the best possible heat protection in areas where high temperatures are always present and problematic, Floor annd Tunnel Shield II limits heat transfer on fire walls, transmission tunnels, floor boards, fuel cells and other areas where heat is an issue. Floor & Tunnel Shield II provides excellent light weight thermal protection, acts as a guard against track and road debris, and provides sound deadening as well. Constructed with an embossed 10 mil aluminum face bonded to 1/8 in. composite glass-fiber core and backed with a high temp super strong pressure sensitive backing, Floor and Tunnel Shield II withstands up to 1750F. The adhesive side holds past 450F. Its improved multifaceted modern aluminum surface offers improved reflection and rigidity and allows for ease of installation - aluminum side must face the heat source. At only 3/16 in. thick, this product can be shaped and trimmed for a custom fit and is ideal for minimal clearance areas. With a unique and patented finely woven glass-fiber backing, Floor and Tunnel Shield II is the easiest, most cost effective way to control thermal transfer while protecting expensive components and vehicle occupants from extreme heat situations and sound. Floor and Tunnel Shield II can be used on any number of surfaces including, metal, aluminum, carbon fiber, plastic, and more. 10 mil dimpled aluminum face Protection for engine compartments Protection for painted body parts Comfortable interior at any temperature Hi-temp adhesive for a do-it-once install Extreme heat barrier - aluminum side should face the heat Only 3/16 in. thick Use as barrier to reflect and insulate from any heat source Great for exterior applications DO NOT apply directly to exhaust components.
Installation InstructionsInstallation Instructions
- Ideal For Firewalls/Under Vehicle/Floor Pans/Oil Tank Box/etc.
- Serves As A Barrier To Unwanted Road/Tire And Engine Noise
- Aggressive Self-Adhesive Backing Holds Past 450 Degrees F
- Withstands Direct High Temperatures Up To 1750 Degrees
- Blocks Radiant Heat From Entering Driver Compartment
- Adheres To Almost Any Surface/Material/Fiberglass
- Minimum Clearance Required Only 3/16 in. Thick
- Easy To Form To Shapes And Contours
- Constructed From 10 Mil Aluminum
- Peel and stick adhesive backing
- Just Trim Peel And Stick
- Brand
- DEI
- Part number
- 50503
- SKU
- DEI50503
- UPC
- 607078505033
- Category
- Heat Shields
- Weight
- 5.6 lb
- Shipping
- Ground, ships in 1 to 2 business days
Universal fit. This part is not vehicle-specific. Check the dimensions in the description, or text us a photo of what you are replacing and we will confirm it before you order.
Not sure it fits? Call 908-223-9744 or text us the year, model and engine. We confirm fitment before you order.
- Shipping
- In-stock parts ship in 1 to 2 business days. Tracking is emailed as soon as the label prints.
- Returns
- 30-day returns on unused parts in the original packaging. Return policy.
- Warning
- This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Why buy here
A diesel shop that sells parts, not a website that sells boxes.
Every part on this site is one our own techs can stand behind.
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We run what we sell
A working diesel repair and fabrication shop in Nazareth, PA. These are the parts our techs install every week.
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Real techs on the phone
Call or text 908-223-9744 and you get a diesel tech, not a script.
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Authorized dealer
Genuine parts straight from the manufacturer, with the factory warranty behind them.
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Fast from stock
Most in-stock parts ship in 1 to 2 business days from warehouses across the USA.
Authorized dealer for 140+ brands
All brands- 7+ Years in business
- 6+ Shop technicians
- 30,000+ In-stock SKUs
- 25+ Trucks given away
Reviews
What customers say
Verified reviews collected by Loox from real orders.
Good to know
Questions, answered straight.
If it is not here, call or text the counter. Real people, real answers.
Fitment
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Will this fit my truck?
The Fits section at the top of the page lists the manufacturer's applications for this exact part. If your year, make and model is not there, or you are not sure, text us a photo of what you are replacing with your year and engine and we will confirm it before you order.
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What if I order the wrong part?
Call or text us before it ships and we will swap it. After delivery you have 30 days to return it in new, uninstalled condition. The return policy has the restocking details.
Shipping
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When will it ship?
In-stock parts usually ship within 1 to 2 business days from warehouses across the USA. The stock line under the options tells you the status of the part you are looking at. Large items ship LTL freight and we call to schedule delivery.
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Why did I only get part of my order?
We ship from multiple warehouses, so an order with several items can arrive in more than one box. Tracking for each shipment is emailed as it goes out. Full details in the shipping policy.
Returns and warranty
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What is the return policy?
30 days from delivery, in new and uninstalled condition, with a restocking fee. Everything is spelled out in the Returns & Refund Policy.
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How do warranty claims work?
We are an authorized dealer, so the manufacturer's warranty applies to every part we sell. Call or text us with your order number and we handle the claim with the brand for you.
Paying
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Can I pay over time?
Yes. Shop Pay installments are offered at checkout on qualifying orders, and the monthly estimate shows right under the price.
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What is a core deposit?
Some remanufactured parts, like injectors and turbos, carry a refundable core deposit. It is shown on the product page when it applies and refunded when your old part comes back to us.
The shop floor, Nazareth, PAFull Send Diesel, Nazareth, PA
A team of diesel people, not a call center.
Full Send Diesel is a shop full of techs, builders and parts people in Nazareth, Pennsylvania. When you call or text, you reach someone who works on these trucks and knows the parts.
Not sure what you need? Send a photo of what you are replacing with your year and engine. We will point you to the right part, confirm it is in stock, and get it moving.
Mon–Fri, 8am–4pm ET. After hours, text or email and we answer first thing in the morning.


































