---
product_id: 3701123
title: "Standard Motor Products TCA21 4WD Switch"
brand: "standard motor products"
price: "NT$5671"
currency: TWD
in_stock: true
reviews_count: 8
category: "Standard Motor Products"
url: https://www.desertcart.tw/products/3701123-standard-motor-products-tca21-4wd-switch
store_origin: TW
region: Taiwan
---

# 20A current rating Push button actuator Easy 5-min install Standard Motor Products TCA21 4WD Switch

**Brand:** standard motor products
**Price:** NT$5671
**Availability:** ✅ In Stock

## Summary

> 🔘 Engage your adventure with a single push!

## Quick Answers

- **What is this?** Standard Motor Products TCA21 4WD Switch by standard motor products
- **How much does it cost?** NT$5671 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/3701123-standard-motor-products-tca21-4wd-switch)

## Best For

- standard motor products enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** Slim 2.75 x 2.75 x 7.13 inch form factor, weighing just 0.27 lbs.
- • **Robust 20 Amp Capacity:** Handles high current loads with nickel-plated brass contacts for durability.
- • **Plug & Play Installation:** Simple screw-in design fits right into your transfer case—no mechanic needed.
- • **Effortless 4WD Activation:** One-touch push button control for instant engagement.
- • **Trusted Standard Motor Quality:** Backed by a 4.4-star rating and reliable brand reputation.

## Overview

The Standard Motor Products TCA21 4WD Switch is a compact, push-button actuator designed for quick and reliable four-wheel drive engagement. Featuring a durable 20 Amp nickel-plated brass contact system, it installs easily under the transfer case for a seamless upgrade. Trusted by thousands with a 4.4-star rating, this switch revives your 4WD functionality in minutes, making it a must-have for off-road enthusiasts and daily drivers alike.

## Description

Standard Motor Products TCA21 4WD Switch

Review: THIS WORKS! - We were without 4WD in our ‘97 K1500 for 3 years thinking we had a bigger problem than we had. My wife did some searching and found this actuator. Simple install right up under the front end into the transfer case. Screw it in and plug in the cable and BOOM! 4WD has engaged!
Review: Great product - Super easy to install. 5 minute job. 4wd works great now.

## Features

- Country Of Origin : China

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001TEMLE4 |
| Actuator Type | Push Button |
| Best Sellers Rank | #715,620 in Automotive ( See Top 100 in Automotive ) #79 in Automotive Replacement Four Wheel Drive Switches |
| Brand | Standard Motor Products |
| Brand Name | Standard Motor Products |
| Circuit Type | 1-way |
| Color | Multi |
| Connectivity Protocol | X-10 |
| Contact Material | Nickel-plated Brass |
| Contact Type | Normally Open |
| Control Method | Touch |
| Controller Type | Push Button |
| Current Rating | 20 Amps |
| Customer Reviews | 4.4 out of 5 stars 369 Reviews |
| Global Trade Identification Number | 00707390095967 |
| Included Components | switch |
| International Protection Rating | IP00 |
| Item Dimensions | 2.75 x 2.75 x 7.13 inches |
| Item Type Name | switch |
| Item Weight | 0.27 Pounds |
| Item dimensions L x W x H | 2.75 x 2.75 x 7.13 inches |
| Manufacturer | Standard |
| Model | TCA21 |
| Mounting Type | Handlebar Mount |
| Number of Items | 1 |
| Number of Positions | 4 |
| Operating Voltage | 5 Volts |
| Operation Mode | attribute not appiicable to product |
| Part Number | TCA21 |
| UPC | 707390095967 |
| Unit Count | 1.0 Count |
| Warranty Description | Please contact us if you experience any issues within 30 days of receipt. |

## Images

![Standard Motor Products TCA21 4WD Switch - Image 1](https://m.media-amazon.com/images/I/71lZ0ndTFbL.jpg)
![Standard Motor Products TCA21 4WD Switch - Image 2](https://m.media-amazon.com/images/I/61jBVEaRH7L.jpg)
![Standard Motor Products TCA21 4WD Switch - Image 3](https://m.media-amazon.com/images/I/41fkLkZZ0sL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ THIS WORKS!
*by B***N on August 23, 2021*

We were without 4WD in our ‘97 K1500 for 3 years thinking we had a bigger problem than we had. My wife did some searching and found this actuator. Simple install right up under the front end into the transfer case. Screw it in and plug in the cable and BOOM! 4WD has engaged!

### ⭐⭐⭐⭐⭐ Great product
*by V***L on March 1, 2023*

Super easy to install. 5 minute job. 4wd works great now.

### ⭐⭐⭐⭐ Fixed my front axle not engaging with 4wd
*by N***6 on April 21, 2025*

Fixed my 1997 Suburban front axle, apparently there is two style actuators and it would be just my luck that all the trucks in the junkyard have the other style. My only issue with this one is it seems to engage slower than the factory one, but it has held up well and still working great months later!

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**Shop now:** [https://www.desertcart.tw/products/3701123-standard-motor-products-tca21-4wd-switch](https://www.desertcart.tw/products/3701123-standard-motor-products-tca21-4wd-switch)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-06-24*