# WeatherTech 81942IM Dark Tint Rear Side Window Deflector for 2018-2024 GMC Terrain

### Performance Overview

The WeatherTech Side Window Deflector is precision-machined for a perfect fit with your vehicle's window channel. They are made from the highest quality acrylic material available and is designed to ensure maximum performance with captivating style. The Side Window Deflector allows for fresh air to move into the vehicle while dissipating interior heat and keeping the rain out. The low-profile design ensures a near OEM look making this accessory perfect for a subtle boost in style. Installation is a breeze, no drilling necessary.

### Key Features

-   The WeatherTech Side Window Deflector is precision-machined for a perfect fit with your vehicle's window channel.
-   They are made from the highest quality acrylic material available and is designed to ensure maximum performance with captivating style.
-   The Side Window Deflector allows for fresh air to move into the vehicle while dissipating interior heat and keeping the rain out.
-   The low-profile design ensures a near OEM look making this accessory perfect for a subtle boost in style.
-   WeatherTech part number 81942IM.

### Vehicle Fitment

-   2018 GMC Terrain — Position: Rear Side Windows; Fitment Precision: DENALI, SL, SLE, SLT
-   2019 GMC Terrain — Position: Rear Side Windows; Fitment Precision: DENALI, SL, SLE, SLT
-   2020 GMC Terrain — Position: Rear Side Windows; Fitment Precision: DENALI, SL, SLE, SLT
-   2021 GMC Terrain — Position: Rear Side Windows; Fitment Precision: DENALI, SL, SLE, SLT
-   2022 GMC Terrain — Position: Rear Side Windows; Fitment Precision: AT4, DENALI, SLE, SLT
-   2023 GMC Terrain — Position: Rear Side Windows; Fitment Precision: AT4, DENALI, SLE, SLT
-   2024 GMC Terrain — Position: Rear Side Windows; Fitment Precision: AT4, DENALI, SLE, SLT

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is 81942IM.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Side Window Deflector for GMC Terrain
-   81942IM fitment
-   WeatherTech Side Window Deflector
-   Rear Side Windows Side Window Deflector
-   2018 GMC Terrain Side Window Deflector

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2018

GMC

Terrain

Rear Side Windows

DENALI, SL, SLE, SLT

2019

GMC

Terrain

Rear Side Windows

DENALI, SL, SLE, SLT

2020

GMC

Terrain

Rear Side Windows

DENALI, SL, SLE, SLT

2021

GMC

Terrain

Rear Side Windows

DENALI, SL, SLE, SLT

2022

GMC

Terrain

Rear Side Windows

AT4, DENALI, SLE, SLT

2023

GMC

Terrain

Rear Side Windows

AT4, DENALI, SLE, SLT

2024

GMC

Terrain

Rear Side Windows

AT4, DENALI, SLE, SLT

## Details

- **Price:** 70.4 CAD
- **Vendor:** WeatherTech
- **Type:** Side Window Deflector
- **Tags:** 2018 GMC Terrain, 2019 GMC Terrain, 2020 GMC Terrain, 2021 GMC Terrain, 2022 GMC Terrain, 2023 GMC Terrain, 2024 GMC Terrain, 81942IM, AT4, Automotive, Automotive Performance, DENALI, Direct Replacement, Rear Side Windows, Side Window Deflector, SL, SLE, SLT, Vehicle Specific, WeatherTech

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 70.40 CAD | In stock |

## Images

- WeatherTech 81942IM Dark Tint Rear Side Window Deflector for 2018-2024 GMC Terrain

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/weathertech-gmc-terrain-side-window-deflector-81942im)
> Updated: 2026-07-17