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Undercover Classic Tonneau Cover UC4040

Product Information
Our Price: $835.23
  5 (2 reviews)
Part #:UC4040
Applications: 2004-2006 Toyota Tundra w/ Deck Rail System, 6'2" Bed
2004-2006 Toyota Tundra w/o Deck Rail System, 6'2" Bed
  • Constructed of durable ABS composite
  • Full perimeter seal ensures a weather-tight seal
  • Twist-locks offer added security
Download Installation Instructions
Add to Cart
Ships Oct 28th - Nov 2nd


  • ABS composite material is strong but lightweight
  • Low profile hinged design
  • Includes hardware to hang on wall
  • Simple and easy to clamp-on install
  • Hydraulically actuated struts
  • Dual locks for security
  • Built-in LED light
  • Proud supporter of Building Homes for Heroes
  • Made in the USA - Rogersville, MO


The UnderCover Classic tonneau cover is the gold standard in truck lid covers. Your truck will look great with the low profile, hinged design that UnderCover is known for and you can't get better cargo protection without hiring a security guard!

A Classic UnderCover tonneau has a patented X-Effect™ design and advanced polymers give the UnderCover Classic unparalleled strength and durability at a fraction of the weight and less cost than fiberglass.

Your UnderCover tonneau protects your cargo with dual stainless-steel locks and an over the tailgate design for extra security. They are easy to remove and they are light weight, 58 lbs for most full size trucks, making them easy to handle. In fact, UnderCover includes mounting hardware so you can hang yours on the garage wall to prevent clutter and to keep your cover from being damaged.

Additional features including the easy-to-use clamps and hydraulically actuated struts make installing and using your new cover simple and easy. for ease of opening and closing. Manufactured by UnderCover. Classic tonneau covers are easy to clean since they don't require any special soaps or protectants. All you need is regular soap and water. The UV protected polymer will stay looking great for years!

Turn your truck bed into a cargo safe now with the made in America quality you can only get with an UnderCover Classic tonneau cover.

Manufactured by UnderCover, a Truck Hero company.

See the all new Undercover SE Tonneau Cover


Order Notes

Trucks with the wing-style tailgate cap will need to remove this cap or replace it with a form-fitting cap. View Available Part Numbers For This Product Line


The UnderCover Classic is very easy and simple to install at home in your own garage. There is no drilling required and it should only take about an hour before you can hit the highway without worrying about the safety of your cargo. For additional information or if you have any questions, please fell free to call us at 1-877-216-5446 or 701-253-5906.

PDF Icon UnderCover 4040 Installation Instructions

3 Year Warranty

UnderCover truck bed covers are backed by a limited 3-year warranty

3 Years for Workmanship
3 Years for Materials of Composite structure
3 Years for Hardware
1 Year on Struts



Product Reviews Summary

Price / Value
Ease of Installation
2  Customer Reviews
5 Star
4 Star
3 Star
2 Star
1 Star
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Part #: UC-UC4040 Posted on
Was this review helpful?
- Toyota Tundra (Pasadena, MD)
Price / Value
Ease of Installation
I have ordered a lot of products on-line and I am always skeptical. But man this experience was right on the money. EVERYTHING from the initial first call was a first class job, even the guy who made the delivery. I did a good bit of research on trying to find the perfect bed cover, well I found it. If you are in the market for a bed cover this tonneau is everything they tell you it is and more. My wife and can very easily remove the cover when we need to. It's light, very strong, the looks work well, and the small light is good enough to see in the bed at night. The best investment I have ever MADE, and I am not blowing smoke up your butt either.
Thanks Jimmy in Maryland
Part #: UC-UC4040 Posted on
Was this review helpful?
- Toyota Tundra (Riverside, CA)
Price / Value
Ease of Installation
This review is from a guy with a permanent back injury.
It took 30 minutes to install and even though I have a serious back injury, my wife and I can remove the cover in less than a minute.
This cover weighs less than any other that I have seen and is just as strong and durable.
It was delivered 4 days after ordering and the sales rep was very attentive. Being a business owner, I can honestly recommend both the company and this product.
Mike Panah