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The DEI Cool Tube Extreme (Part Number: dei10421) is a high-performance protective sleeve designed to withstand continuous temperatures up to 750°F, providing reliable insulation for automotive wiring, hoses, and cables. Crafted from a specialized composite material reinforced with spiral wire, this ultra-lightweight tube offers exceptional flexibility, allowing it to conform easily to tight bends and complex routing paths within engine compartments. Its durable finish ensures easy cleaning and long-lasting performance, making it an ideal choice for professional automotive applications.
Its reflective properties not only keep heat away from sensitive components but also help maintain optimal operating temperatures, enhancing overall vehicle reliability. The Cool Tube Extreme can be slit lengthwise, enabling straightforward installation without the need to remove existing wires or hoses, which saves time and simplifies maintenance. The 1/2-inch diameter and 3-foot length provide versatile coverage for various automotive wiring and hose configurations, making it a practical solution for custom modifications or factory repairs.
Please note that this product should not be applied directly to exhaust components, as it is designed for insulation purposes and not for direct heat exposure. Its tough, abrasion-resistant surface withstands weather conditions and under-hood environments, ensuring long-term protection against physical damage and environmental factors. The DEI Cool Tube Extreme is an excellent choice for automotive technicians and enthusiasts seeking a reliable, heat-reflective sleeve that combines ease of installation with superior thermal management. It is compliant with Prop 65 regulations, ensuring safety and environmental standards are met, and is suitable for various automotive applications where high-temperature insulation is required.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
