---
product_id: 803826004
title: "5 Pack Rubber Grommets 4\" (100mm) Drill Hole, 3-2/4\" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black"
brand: "sunkoo"
price: "$37.67"
currency: USD
in_stock: true
reviews_count: 2
category: "Sunkoo"
url: https://www.desertcart.ec/products/803826004-5-pack-rubber-grommets-4-100mm-drill-hole-3-2
store_origin: EC
region: Ecuador
---

# Reliable wire & cable protection Precise 100mm drill hole fit Durable heat & UV resistant rubber 5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black

**Brand:** sunkoo
**Price:** $37.67
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with flawless wire protection!

## Quick Answers

- **What is this?** 5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black by sunkoo
- **How much does it cost?** $37.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/803826004-5-pack-rubber-grommets-4-100mm-drill-hole-3-2)

## Best For

- sunkoo enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Crafted from flexible, corrosion-resistant rubber that resists heat, UV rays, and daily wear for lasting performance.
- • **Versatile Protection:** Shields wires from dust, rain, and sharp edges across automotive, electrical, and industrial projects.
- • **Perfect Fit Every Time:** Engineered for a 100mm drill hole with a snug 91mm inner diameter to secure cables flawlessly.
- • **Clean, Professional Finish:** Keeps your wiring organized and safe while maintaining a sleek, vibration-resistant seal.
- • **Effortless One-Sided Installation:** Designed for quick press-fit mounting with a sealed membrane, ideal for both pros and DIY enthusiasts.

## Overview

This 5-pack of 4-inch rubber grommets offers precise, durable protection for cables and wires in automotive and electrical applications. Made from heat- and UV-resistant rubber, they provide a secure, vibration-resistant seal for 100mm drill holes, ensuring wires stay safe from abrasion, dust, and moisture. Easy one-sided installation makes them perfect for professionals and DIYers aiming for clean, reliable cable management.

## Description

These heavy-duty rubber grommets provide reliable protection for wires and cables in automotive electrical and industrial applications The double-sided design creates a secure vibration-resistant seal in drilled holes preventing damage from sharp edges and abrasion.Made from flexible high-quality rubber these grommets withstand heat and wear while maintaining a professional appearance The simple press-fit installation makes them ideal for firewalls control panels and various DIY projects.Perfect for organizing and safeguarding wiring in cars machinery and electronic enclosures these grommets offer an essential solution for clean and protected cable routing.

Review: Decent grommets, just not very heavy-duty. - These are decent grommets, just a little thinner than I would like. For something made to go into a fairly large hole, these are a little thin and tend to end up inside whatever I am trying to install them on. Other than that, they are decent. The size is accurate and consistent and they are easy enough to work with.
Review: perfect for my tractor - I used this to penetrate through the outer shell of my mini ex to run my fan wires down into the battery compartment area. They come sealed, so you will need to slit an X into them when you are ready. I also need to run some wires through my firewall, which was the original intent for these, but I needed the tractor first.

## Features

- Rubber Grommets :You will get 5Pcs Round Hole Plugs,Inner Dia.: 91mm/3.58-inch, Outer Dia.: 108mm/4.25-inch, Drill Hole: 100mm/3.94-inch, Height: 12mm/0.47-inch, Groove Width: 5mm/0.2-inch.Please choose the appropriate rubber grommet according to the drill hole before purchasing.
- Durable Rubber Material: Made from flexible, corrosion-resistant rubber, these grommets withstand heat, UV light, and wear, ensuring long-lasting performance for wiring protection.
- Effective Wire Protection: These single-sided rubber grommets shield cables from dust, rain, and sharp edges, offering reliable insulation for automotive and electrical applications.
- Simple One-Sided Installation: Install these rubber plugs easily on one side with a sealed membrane that pushes out, ideal for small or long cords—great for DIYers and professionals.
- Versatile for Many Uses: Perfect for automotive, electrical, and hardware projects, these grommets cover holes, prevent metal-on-metal contact, and protect wires in cars and cabinets.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F2SLXHJ1 |
| Best Sellers Rank | #77,986 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #358 in Grommet Kits |
| Date First Available | March 28, 2025 |
| Item Weight | 9.2 ounces |
| Manufacturer | Sunkoo |
| Package Dimensions | 5.04 x 4.53 x 2.56 inches |

## Images

![5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black - Image 1](https://m.media-amazon.com/images/I/61H2VelMFZL.jpg)
![5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black - Image 2](https://m.media-amazon.com/images/I/71-ZAOSm9fL.jpg)
![5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black - Image 3](https://m.media-amazon.com/images/I/61xtaMkhYUL.jpg)
![5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black - Image 4](https://m.media-amazon.com/images/I/714mquroISL.jpg)
![5 Pack Rubber Grommets 4" (100mm) Drill Hole, 3-2/4" (91mm) ID Single Side Plug Gasket for Cable & Wire Firewall Protection, Automotive & Electrical, Black - Image 5](https://m.media-amazon.com/images/I/71afN1BxysL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐ Decent grommets, just not very heavy-duty.
*by A***S on July 18, 2025*

These are decent grommets, just a little thinner than I would like. For something made to go into a fairly large hole, these are a little thin and tend to end up inside whatever I am trying to install them on. Other than that, they are decent. The size is accurate and consistent and they are easy enough to work with.

### ⭐⭐⭐⭐⭐ perfect for my tractor
*by S***2 on August 23, 2025*

I used this to penetrate through the outer shell of my mini ex to run my fan wires down into the battery compartment area. They come sealed, so you will need to slit an X into them when you are ready. I also need to run some wires through my firewall, which was the original intent for these, but I needed the tractor first.

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-12*