---
product_id: 592809903
title: "ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488\" to 1\""
brand: "esi"
price: "₩197467"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/592809903-esi-front-rail-seal-xl-5-1-2-epdm-rubber
store_origin: KR
region: South Korea
---

# 1" width x 1.125" height precision fit Fills height gaps from .488" to 1" Durable EPDM rubber with 3M acrylic foam tape ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1"

**Brand:** esi
**Price:** ₩197467
**Availability:** ✅ In Stock

## Summary

> 🛻 Seal the deal with precision and durability—your truck cap’s new best friend!

## Quick Answers

- **What is this?** ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" by esi
- **How much does it cost?** ₩197467 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/592809903-esi-front-rail-seal-xl-5-1-2-epdm-rubber)

## Best For

- esi enthusiasts

## Why This Product

- Trusted esi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Reusable Seal:** No need to replace every time you remove your cap—built for repeated use and durability.
- • **Perfect Gap Filler:** Seamlessly bridges height gaps from .488" to 1" for a flawless truck cap fit.
- • **3M Adhesive Backing:** High-quality 3M 4011 acrylic foam tape ensures a secure, long-lasting bond without hassle.
- • **Premium EPDM Rubber:** Weather-resistant, flexible material engineered to last through all seasons.
- • **Universal Fit for Truck Caps:** Designed to work with a wide range of truck caps and camper shells, enhancing versatility.

## Overview

The ESI Front Rail Seal XL is a high-quality EPDM rubber seal designed to fill height gaps from .488" to 1" between truck sidewalls and front rails, ensuring a secure, weatherproof fit for truck caps and camper shells. Featuring a 1" width by 1.125" height profile and backed by durable 3M 4011 acrylic foam tape, this reusable seal offers universal compatibility and long-lasting protection against dust and water intrusion. Proudly made in the USA, it’s the professional choice for millennial managers who demand both function and style in their gear.

## Description

ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1"

## Features

- Measures 1" width x 1.125" height and fills a height gap from .488" to 1" from the sidewalls to the front rail, when mounting a truck cap or camper shell.
- If the height of the gap is .251" to .487" install Front Rail Seal (ASIN: B00C0WVV72)
- If the height of the gap is .250" or less, just install one Extruded Solutions (ESI) high quality EPDM rubber truck cap seal on all 3 rails (see product description for choices)
- Adheres with high quality 3M 4011 acrylic foam tape
- No need to replace this seal every time your cap is removed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Colour | Black |
| Brand | ESI |
| Product Dimensions | 29L x 25W Millimeters |
| Fit Type | Universal Fit |
| Item Thickness | 1.13 Inches |
| Surface Recommendation | Truck Bed |
| Manufacturer | aftermarket |
| UPC | 855433005753 |
| Item model number | FRSXL-66R |
| Manufacturer Part Number | FRSXL-66R |
| Country of Origin | USA |
| Item Weight | 227 g |

## Product Details

- **Colour:** Black
- **Brand:** ESI
- **Product Dimensions:** 29L x 25W Millimeters
- **Fit Type:** Universal Fit
- **Item Thickness:** 1.13 Inches

## Images

![ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" - Image 1](https://m.media-amazon.com/images/I/61iM4aASe1L.jpg)
![ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" - Image 2](https://m.media-amazon.com/images/I/61hkwa2tg4L.jpg)
![ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" - Image 3](https://m.media-amazon.com/images/I/61MkjHoRHXL.jpg)
![ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" - Image 4](https://m.media-amazon.com/images/I/71h67k1GyyL.jpg)
![ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1" - Image 5](https://m.media-amazon.com/images/I/61GAt8RHQ4L.jpg)

## Questions & Answers

**Q: Why is this only 5 1/2 feet long, isn't the truck width about 7 feet wide ?**
A: Standard front rail on a pickup is 66” +/-. I used this product on a Ford F-350 crew cab, the front rail seal has done a great job of preventing water permeation on a commercial topper.

**Q: Will this work between the truck bed cover and top of tailgate to keep out water?**
A: I would get the flap seal that is attached to the bottom of the truck bed cover.

**Q: I'm going to have a 1\4" gap on the front rail after installing a new tonneau cover. Will this product compress down to that?**
A: It should, that is exactly what I used it for, had a lip on mine too at the front bulkhead that was about 1/4”+|- lowers then the side rails.  It filled the gap nicely and keeps wind and the elements from entering the box.

**Q: What's the length?**
A: 5 1/2 ft long

## Frequently Bought Together

- ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps—Fills a Height Gap from .488" to 1"
- ESI Super Cap Seal XL 20 FT (2 1/8" Width x 1/2" Height x 20' Length) EPDM Rubber for Caps Over 200 lbs
- ESI Ultimate Tailgate Seal with Taper Seal 10ft for use with Truck Caps and Tonneau Covers

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**Shop now:** [https://www.desertcart.kr/products/592809903-esi-front-rail-seal-xl-5-1-2-epdm-rubber](https://www.desertcart.kr/products/592809903-esi-front-rail-seal-xl-5-1-2-epdm-rubber)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-02*