---
product_id: 743997227
title: "Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit"
brand: "semcto"
price: "$15.81"
currency: USD
in_stock: false
url: https://www.desertcart.ec/products/743997227-semcto-28146sw-brake-vacuum-switch-vacuum-pump-switch-for-12v
store_origin: EC
region: Ecuador
---

# Extended pump lifespan via check valve Secure screw lock prevents loosening Pre-set vacuum activation range Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit

**Brand:** semcto
**Price:** $15.81
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Elevate your brake game with precision vacuum control!

## Quick Answers

- **What is this?** Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit by semcto
- **How much does it cost?** $15.81 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/743997227-semcto-28146sw-brake-vacuum-switch-vacuum-pump-switch-for-12v)

## Best For

- semcto enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Assurance:** Designed for tight connections to prevent vacuum leaks and maintain peak efficiency
- • **Pump Longevity Booster:** Integrated check valve stops constant pump cycling, extending pump life and reliability
- • **Seamless Compatibility:** Perfectly fits Semcto and popular AC Delco vacuum pumps, including classic 79 Corvettes
- • **Precision Vacuum Control:** Automatically toggles pump at 0.04-0.06 MPa for optimal brake booster performance
- • **Maintenance-Free Stability:** Glue-secured adjustment screw ensures consistent settings without accidental shifts

## Overview

The Semcto 28146SW Brake Vacuum Switch is a pre-set, maintenance-free vacuum pump switch designed for 12V electric brake boosters. Featuring an integrated check valve to prevent pump overuse, it activates between 0.04 and 0.06 MPa vacuum levels, ensuring efficient brake booster operation. Its secure screw lock prevents adjustment loosening, and it fits seamlessly with Semcto and AC Delco pumps, making it a reliable upgrade for professional-grade brake systems.

## Description

Name: 28146 Switch, Electric Brake Vacuum Pump Switch for Booster 28146 Self-adjusting pressure brake vacuum switch Stable, hot product. ☺Very suitable for 28146 brake vacuum pump. ☺Automatically adjusts according to pre-set range. ☺Prevent pump from working at all times and extend the life of the pump. Tip: Be sure to tighten it when connecting. Otherwise, it will cause leakage and affect the use of the pump. Warranty: We offer money back returns, free exchanges, and other services. If you have any questions, please contact us first. Every customer, you will be pleased with our products and service!

## Features

- ADDED CHECK VALVE - 28146 vacuum pump switch prevents the pump from constantly working and extends the life of the pump. After the vacuum pump is stopped, the vacuum will be lost. Simply place the check valve between the pump and switch and you're ready to go
- WORKING VACUUM RANGE - Our booster vacuum pump is designed to work when the vacuum runs below 0.04 MPa and approximately 0.06 MPa kickoff. This switch turns the pump off or on at the pre-set vacuum volume. Pressure automatic adjustment switch
- Pressure Switch Automatic Adjustment - The adjustment screw on the switch is glued with glue to prevent the screws from loosening during transportation. This range is pre-set and cannot be adjusted. Turn the pump off or turn on with the pre-set vacuum volume
- PERFECT FIT - 28146 vacuum pump switch fits our brake electric vacuum pump. Many customers prefer to use with AC Delco vacuum pumps, 79 Corvettes, etc
- IMPORTANT TIPS - Always tighten the connections. Otherwise, it will cause leakage and affect the use of the pump. Once installed correctly, it will work as intended. If you have any questions, please contact us

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Semcto |
| Part number | 28146BP-002 |
| Item Weight | 95 g |
| Package Dimensions | 12.1 x 7 x 4.4 cm; 95 g |
| Color | 28146 Brake Vacuum Switch |
| Measurement System | Imperial |
| Mounting Type | スクリューマウント |
| Batteries Included | No |
| Batteries Required? | No |

## Product Details

- **Connector Type:** Screw Terminals
- **Contact Material:** 銅合金
- **Contact Type:** 常開接点
- **Mounting Type:** スクリューマウント
- **Brand:** Semcto

## Images

![Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit - Image 1](https://m.media-amazon.com/images/I/41Z5H2F5wBL.jpg)
![Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit - Image 2](https://m.media-amazon.com/images/I/41WwLH0Z4NL.jpg)
![Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit - Image 3](https://m.media-amazon.com/images/I/61awsrQdTGL.jpg)
![Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit - Image 4](https://m.media-amazon.com/images/I/61aAIQnkcpL.jpg)
![Semcto 28146SW Brake Vacuum Switch Vacuum Pump Switch for 12V Electric Brake Booster Electric Vacuum Pump Kit - Image 5](https://m.media-amazon.com/images/I/61NgUqoDWDL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.ec/products/743997227-semcto-28146sw-brake-vacuum-switch-vacuum-pump-switch-for-12v](https://www.desertcart.ec/products/743997227-semcto-28146sw-brake-vacuum-switch-vacuum-pump-switch-for-12v)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-23*