Replacement Truck Cap Window
How to Choose the Right Rubber Boot Seal
You can purchase rubber boot material for your special project. This seal is manufactured from long-lasting EPDM synthetic rubber compound and has a bendable spring steel clip for attaching to any rim. This material is available by the foot. To ascertain how much you need measure the distance around your cab opening. You have 3 alternatives of rubber to apply for waterproofing your cabs together.
Tips for Getting the Right Fit
To determine how much you want measure the distance around your cab opening. It is important that both openings are perfectly the matching size. Make sure to measure the opening before ordering. Every installation is unique.
Don't Settle for Less: Upgrade to a Seal Built for the Road
Choosing the right seal is essential for your vehicle project. This rubber boot excels due to its industrial-strength construction and real-world reliability. We take pride on providing products that surpass your needs for long-term performance. Don't settle for flimsy seals, upgrade to one that's engineered for adventure.
Replacement Truck Cap Window Features and Benefits
| Feature | Benefit | Use Case |
|---|---|---|
| Fast, Reliable Shipping | Quick turnaround when time-sensitive installs are needed | Helpful for last-minute road trip or show prep |
| Aesthetic Finish | Clean, professional appearance enhances your build’s look | Great for show rigs, restorations, or resale appeal |
| Supports Walk-Through Conversions | Lets you convert separate spaces into one continuous interior | Used in van builds, campers, and custom sleeper cabs |
Order Form
To begin your order just enter the total amount of feet of boot material you need in the appropriate box next to the item you want to order below. Check your entries then click on the "Order Now " button.
Accordion Boot - Part Number 541
The accordion boot is designed for cabs where you take out the truck window. This product works best with fiberglass shells that are 1/8" to 3/16" thick. Please note that both openings must be exactly the same size for this boot to fit properly.
$8.95 per foot
In Stock
Order 541
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Compression Boot - Part Number 540
Use this seal when you leave the rear slider window in the truck. This product works best with fiberglass shells that are 1/8" to 3/16" thick. You will also use this boot if the opening in the fiberglass shell is much larger than the opening in your truck.
$7.95 per foot
In Stock
Order 540
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Extra Wide Accordion Boot - Part Number 543
The extra wide accordion boot is designed applications where you have a large gap between the space you want to seal. This product works best with fiberglass shells or sheet metal flange that are 1/8" to 3/16" thick. Both openings must be exactly the same size for this boot to fit properly.
$11.50 per foot
In Stock
Order 543
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Accordion Boot - Ultra Wide 10" Part Number 544
The Ultra Wide 10 Inch accordion boot is designed for very wide gaps between cabs.. This product works best with fiberglass shells that are 1/8" to 3/16" thick. Please note that both openings must be exactly the same size for this boot to fit properly.
$13.90 per foot
In Stock
Order 544
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Accordion Boot 15 - Part Number 546
The Accordion Boot 15 is designed applications where you have a large gap between the space you want to seal. This product works best with fiberglass shells or sheet metal flange that are 1/8" to 3/16" thick. Both openings must be exactly the same size for this boot to fit properly.
$16.50 per foot
In Stock
Order 546
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Compression Bulb Seal - Part Number 545
Use this seal when you leave the rear slider window in the truck. This product works best with fiberglass shells that are 1/8" to 3/16" thick. You will also use this boot if the opening in the fiberglass shell is much larger than the opening in your truck.
$8.25 per foot
In Stock
Order 545
- Enter the total amount of feet of boot material you need in the text box
- Check your entries, then click on the "Order Now" button.
Frequently Asked Questions
- How much replacement truck cap windowdo I need?
This material is sold by the foot. To determine how much replacement truck cap window you need, measure the full distance around your cab or window opening. Most full-size pickups need about 13–14 feet, while mini-trucks average around 10 feet.
- Can the replacement truck cap window be painted?
We only sell black boots, but EPDM rubber can be painted using an acrylic roof coating rated for EPDM. Avoid latex and petroleum-based paints.
- Will the replacement truck cap window work on a walk-through truck conversion?
Yes! This is a perfect use case. The replacement truck cap window allows you to join the truck cab and camper shell or utility box with a weather-sealed, flexible connection.