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HOLIDAY HOURS 877-216-5446

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  • Monday to Friday: 7am - 6pm CST
  • Saturday: 8am - 6pm CST
  • Sunday: Closed

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  • Saturday Dec 24th: 8am - 6pm CST
  • Sunday Dec 25th: Closed
  • Saturday Dec 31st: 8am - 6pm CST
  • Sunday Jan 1st: Closed


  • Monday to Friday: 7am - 10pm CST
  • Saturday: 8am - 8pm CST
  • Sunday: 8am - 10pm CST


  • Monday to Friday: 7am - 6pm CST
  • Saturday: Closed
  • Sunday: Closed

Dee Zee Diamond Plate Bed Rail Caps 11999B

Product Information
List Price:
Our Price:
1 (1 review)
Part #:
Black Tread
Without Stake Pocket Holes
  • Fits over factory caps
  • Sold in pairs
Add to Cart
Ships Jan 23rd - 26th


Measure Your Truck Bed for a Tonneau Cover

  • Durable aluminum construction
  • Rugged diamond plate styling
  • Custom fit design
  • Simple and easy to install
  • Protects your rail tops & will not rust
  • Available in Brite Tread or Black Tread finish
  • Available with or without stake pocket holes
  • Designed to fit over factory caps, sold in pairs
  • Made in the USA - Des Moines, IA


Dee Zee diamond bed rail caps combine classic truck style with rough and tough durability. They are an ideal solution for guarding your bed rails against dents, dings, and scratches when hauling anything with your truck.

Constructed using heavy duty aluminum, Dee Zee diamond plate bed rail caps are the top of the line when it comes to truck bed protection. They are resistant to rust and corrosion, which ensures your truck bed caps will be long lasting and continue to look great for years to come. Thanks to their diamond plate pattern, they have an added amount of strength and durability over other bed caps.

When ordering your Dee Zee diamond plate bed rail caps, you have the option of choosing either classic Brite Tread or matte black finishes. Both will add a sleek and slick look to your pickup truck that admirers and onlookers will love. They are also available with or without the stake pocket hole cut outs in order to personalize them to your unique needs. Each pair is also made to fit the make and model of your truck.

Installing a pair of Dee Zee diamond plate bed rail caps is as easy as can be, and can be accomplished at home without professional assistance. They require no drilling for most trucks, and do not need to be cut down to size thanks to their precise fitment. Should you have questions about installation, our customer service team is available to help.

If you do any sort of hauling with your truck at all, this is a highly advisable aftermarket accessory upgrade to make. Made in the USA and backed by a limited lifetime warranty from Dee Zee. Order now!

View Available Part Numbers For This Product Line


  • 1988-1998 Chevy C/K Pickup 1500 8' Bed, 8' Bed
  • 1988-2000 Chevy C/K Pickup 2500 8' Bed, 8' Bed
  • 1988-1991 Chevy C/K Pickup 3500 8' Bed, Extended Cab, 8' Bed, Extended Cab
  • 1988-1991 Chevy C/K Pickup 3500 8' Bed, Regular Cab, 8' Bed, Regular Cab
  • 1992-2000 Chevy C/K Pickup 3500 8' Bed, 8' Bed
  • 1988-1998 GMC C/K Pickup 1500 8' Bed, 8' Bed
  • 1988-2000 GMC C/K Pickup 2500 8' Bed, 8' Bed
  • 1988-1991 GMC C/K Pickup 3500 8' Bed, Extended Cab, 8' Bed, Extended Cab
  • 1988-1991 GMC C/K Pickup 3500 8' Bed, Regular Cab, 8' Bed, Regular Cab
  • 1992-2000 GMC C/K Pickup 3500 8' Bed, 8' Bed


Dee Zee diamond plate truck bed caps are easy to install yourself, right at home. There is no drilling or cutting required for most models and the instructions are simple and easy to follow. For additional information please call us at 1-877-216-5446 or 701-253-5906.

PDF Icon Dee Zee 11984 Installation Instructions

Limited Lifetime Warranty

Dee Zee has a limited lifetime warranty on their diamond plate truck bed caps against defects in materials or workmanship as outlined below.
Dee Zee, Inc. guarantees the original purchaser a limited lifetime warranty against manufacturer defects in materials, workmanship, and design under normal use excluding damage resulting from road hazards such as gravel or other debris, product misuse, improper installation, impairments from accidents, product modifications, spills, vandalism, or product neglect. Wear items such as shocks, latches, keys, hinges, step pads, seals, etc. have a one-year warranty. This warranty applies only to new products and is limited to the repair or replacement of genuine Dee Zee products. Warranty does not include electrical components, light bulb replacement, and cost of removal, installation, labor, transportation costs, and loss of use, inconvenience, or consequential damages. Modifications of any kind to Dee Zee product voids all warranties. The original purchaser may be required (at Dee Zee's sole discretion) to return the defective merchandise, provide a photograph, or provide the original purchase receipt to the original place of purchase or Dee Zee, Inc.

Product Reviews Summary

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Ease of Installation
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Part #: DEZ-11999B Posted on
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- 1997 Chevy C/K Pickup 3500 (Spokane Valley, WA)
Price / Value
Ease of Installation
They don't fit the bed correct. Each side is at least 3/4 of an inch if not an inch out by the time it's at the rear of the bed. They look nice but just don't fit