---
product_id: 14010314
title: "GENK40A Auto Dimming Rear View Mirror"
brand: "gentex"
price: "€ 350.74"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.nl/products/14010314-genk40a-auto-dimming-rear-view-mirror
store_origin: NL
region: Netherlands
---

# Auto-dimming tech for glare-free night driving Built-in HomeLink controls garage & home automation Universal wedge mount for quick, hassle-free install GENK40A Auto Dimming Rear View Mirror

**Brand:** gentex
**Price:** € 350.74
**Availability:** ✅ In Stock

## Summary

> 🚗✨ Drive smarter, not harder — glare-free nights and smart home control in one sleek mirror!

## Quick Answers

- **What is this?** GENK40A Auto Dimming Rear View Mirror by gentex
- **How much does it cost?** € 350.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/14010314-genk40a-auto-dimming-rear-view-mirror)

## Best For

- gentex enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Lightweight:** Weighing just 1.75 pounds, this mirror balances sturdy build quality with minimal added weight to your vehicle.
- • **Glare-Free Night Vision:** Automatically dims to eliminate blinding headlights, keeping your drive safer and stress-free after dark.
- • **Effortless Universal Fit:** Designed with a standard wedge mount and included Mito wiring harness for a fast, tool-free installation on most vehicles.
- • **Sleek & Functional Design:** Compact 14x8 inch rectangular mirror with convex lens curvature for an expanded rear view without bulk.
- • **Seamless Smart Home Integration:** Control garage doors, gates, and home lighting effortlessly with integrated HomeLink buttons—tech that keeps you connected on the go.

## Overview

The GENTEX GENK40A is a universal-fit auto-dimming rearview mirror featuring advanced sensors that automatically reduce glare from headlights, enhancing night driving safety. It integrates HomeLink technology for seamless control of garage doors and home automation systems. The package includes a Mito wiring harness for quick installation with a standard wedge mount, making it compatible with most US and some foreign vehicles. Measuring 14x8x3 inches and weighing 1.75 pounds, this mirror combines functionality, convenience, and modern tech in a sleek design.

## Description

Gentex Auto-Dimming Rearview Mirror w/ HomeLink Activate garage doors, gates, home lighting and more with the press of a HomeLink button nicely integrated into the auto-dimming rearview mirror.Eliminate dangerous glare from rear-approaching headlights with this sophisticated night driving safety accessory from Gentex Corporation. Special sensors and electronic circuitry detect glare and automatically dim the mirror accordingly. The GENK40A features Homelink capabilities. Gentex mirrors come with a "wedge" mount fitting. This wedge mount is standard on most all US made and some foreign make vehicles. This unit comes with the Mito aftermarket wiring harness that makes for an easier and quicker installation.

## Features

- Complete kit includes mirror, and wire harness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Auto Part Position | Rear |
| Item dimensions L x W x H | 14 x 8 x 3 inches |
| Brand | Gentex |
| Mounting Type | Windshield Mount |
| Item Weight | 1.75 Pounds |
| Fit Type | Universal Fit |
| Size | 8 inches (W) x 14 inches (L) x 3 inches (H) |
| Shape | Rectangular |
| Automotive Fit Type | Universal Fit |
| Manufacturer | Gentex |
| UPC | 826003000027 |
| Lens Curvature Description | Convex |
| Item Weight | 1.75 pounds |
| Product Dimensions | 14 x 8 x 3 inches |
| Item model number | GENK40A |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | GENK40A |
| Lift Type | Manual |

## Product Details

- **Auto Part Position:** Rear
- **Item dimensions L x W x H:** 14 x 8 x 3 inches
- **Material:** Glass
- **Brand:** Gentex
- **Vehicle Service Type:** Car
- **Mounting Type:** Windshield Mount
- **Item Weight:** 1.75 Pounds
- **Fit Type:** Universal Fit
- **Size:** 8 inches (W) x 14 inches (L) x 3 inches (H)
- **Shape:** Rectangular

## Images

![GENK40A Auto Dimming Rear View Mirror - Image 1](https://m.media-amazon.com/images/I/71uf+WyzH2L.jpg)

## Questions & Answers

**Q: Will it fit a 2015 Honda Civic? Does this with cable cover?**
A: Yes, it comes with a cover for the cable and will fit a 2015 civic

**Q: Will this fit a 2014 ford focus?**
A: Yes, I used this in my 2013 Ford Focus for a short period of time. It's now installed in my 2012 Boss 302.

**Q: How about on a 2014 ford mustang?**
A: Yep. This should work fine in your Mustang.American Security Company

**Q: Will this fit 2006 Toyota 4Runner?**
A: I used it for my 2014 4runner, you eill just have to make sure to wire it correctly. It will not plug straight in.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what I wanted.  Works perfectly.
*by L***L on March 25, 2014*

It was incredibly easy to install -- took me about an hour, and most of that time was spent testing the car's wiring harness to find constant-12V, switched-12V, and ground wires to tap into. (Get yourself a good Digital Volt-Ohm Meter if you don't already have one!)It does exactly what I wanted it to do -- no compass or temperature display, which I didn't want since I already have both of those built-in to my car. But it DOES have the Homelink buttons so I don't have to carry around a separate garage-door opener anymore (yay!). The Homelink setup-instructions are pretty clear, too -- you'll need your current garage-door opener, and depending on the type of garage-door opener you have, you might need a ladder to climb up and press a "train" button on the garage-door motor itself. (Having a second person help you with this is not a bad idea -- he/she can press the "train" button while you're in the car operating the Homelink button you're programming. Took me all of 2 minutes to train the Homelink buttons to work with my garage door with the help of my girlfriend. Just make sure you're parked in a place where the door(s) won't come down on your car accidentally while you're training the Homelink button(s). And, supposedly, if you have the right system, you can train one of your unused Homelink buttons (there are three of them) to turn on-and-off lights inside the house! (My system doesn't do this, so I can't verify that personally.)The auto-dimming feature works *wonderfully*. No more having to flip my mirror manually -- this thing auto-adjusts the dimming depending on how bright the lights are behind you (goes from a little dimming to a LOT of dimming as the person gets closer to you), and it does so quite quickly so there's never a problem with glare ever.I highly recommend buying this mirror if you want an auto-dimming mirror that has the Homelink buttons on it, but you don't want the temperature or compass displayed in the upper-right corner of the mirror.

### ⭐⭐⭐⭐ It works but the install is harder than other reviewers said.
*by R***9 on March 25, 2018*

I'd give this 5 stars if the "after market cable" provided was labeled (or wiring instructions were included) because this mirror/homelink product is excellent.It's in and working as advertised. That's the good news. The bad news is the installation was a lot longer and harder than the "1 hour" other reviewers indicated. I'm a biomedical engineer who actually installed X-Ray machines in hospitals so I know my way around a tool box. Here are some installation hints that may help future buyers install this excellent product:1. The cable came with 2 different power wires (at least I think they were both power). One wire was solid black and the other was black with a white stripe and the ground wire with a spade lug. I reached out the seller and asked how to connect the 2 power wires. They couldn't remember. I did much research and the consensus of the group was to connect the power wire a ignition switched power source. I connected both wires to a switched power source. I turned on the ignition (with fire extinguisher in my hand) and the Mirror powered up and programmed perfectly. It continued to work after switching the ignition off and on. Yeah!2. The other tip is: figure out what type of fuses your car uses and buy an "add a fuse" kit from Amazon for your fuse type. My Hyundai uses micro2 fuses so I ordered the correct "add a fuse kit" (pictured below). With THAT said, my Hyundai had tons of "spare" fuses and several fuses for features not included in my car (like power sun roof) but almost all of them were 24 hour power or hot with the ignition switch off. Only 3 unused fuse positions were switched power.3. Finally a note about the "add a fuse"; be sure to check which leg is hot in your car's used box and which leg on the "add a fuse" if connected to your output wire. Otherwise you will end up not going through your "add a fuse" fuse but connecting your power wire directly to the fuse block. Not good.GENTEX GENK40A Auto Dimming Rear View Mirror

### ⭐⭐⭐⭐⭐ This Fits Nicely in a 2020 Prius Prime!
*by D***0 on December 1, 2019*

I had hoped to have this style mirror for the Prius Prime that I just purchased, but it wasn't an option for the XLE (middle) model that I ended up buying. Dealership purchase and install of this style mirror would have been $1,000 or so, so I found the GENK40A with the hope it would fit. Turns out the installation was relatively straight-forward and it works absolutely perfectly. To install, I removed the ceiling cover and stock rearview mirror, installed the new mirror (easy). Importantly, I needed to carve out part of the mirror cover with a Dremel tool in to allow the GENK40A to have enough upward movement so that I had appropriate line-of-sight out the back window. (If you're really tall, it might be a problem to get enough vertical clearance.) I then ran the GENK40A wire along the left side moulding (taking care to stay behind the airbag), and down to the fusebox under the left-side dashboard, where I connected the wires to the fuse for the 12V outlet. Getting the HomeLink to connect with my fairly old garage door opener took a number of tries, but it eventually worked. Couldn't be happier!

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-25*