---
product_id: 32590054
title: "4721 Mass Air Flow Sensor Cleaner - 10 oz."
brand: "johnsen's"
price: "€ 35.33"
currency: EUR
in_stock: true
reviews_count: 8
category: "Johnsen's"
url: https://www.desertcart.pt/products/32590054-4721-mass-air-flow-sensor-cleaner-10-oz
store_origin: PT
region: Portugal
---

# 10 oz precision spray Engineered for sensor safety Made in USA quality 4721 Mass Air Flow Sensor Cleaner - 10 oz.

**Brand:** johnsen's
**Price:** € 35.33
**Availability:** ✅ In Stock

## Summary

> ⚡ Clean sensors, smooth rides — don’t let dirt slow you down!

## Quick Answers

- **What is this?** 4721 Mass Air Flow Sensor Cleaner - 10 oz. by johnsen's
- **How much does it cost?** € 35.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/32590054-4721-mass-air-flow-sensor-cleaner-10-oz)

## Best For

- johnsen's enthusiasts

## Why This Product

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

## Key Features

- • **Highly Rated by Users:** 4.6-star average from 691 reviews proves reliability
- • **Precision Spray Delivery:** 10 oz can with targeted spray for thorough cleaning
- • **Versatile Cleaning Power:** Safe for mass air flow sensors, lawn mowers, and snow blowers
- • **Restore Engine Efficiency:** Eliminates sensor dirt to reduce check engine light triggers
- • **Trusted American Craftsmanship:** Proudly made in the USA ensuring premium quality

## Overview

Johnsen's 4721 Mass Air Flow Sensor Cleaner is a 10 oz automotive-grade spray designed to safely and effectively clean mass air flow sensors, improving engine performance and preventing check engine light issues. Made in the USA and highly rated by users, it’s a versatile solution trusted for both vehicles and outdoor equipment.

## Description

JOHNSEN'S MASS AIR FLOW SENSOR CLEANER 10 OZ

Review: try this before buying parts - bought product in hopes of eliminating troublesome check engine light...cleaned contacts and works perfectly...exactly as described
Review: Spray - Love this stuff use it on lawn mower and snow blowers it works real good.

## Features

- Package Dimensions: 6.604 cms (L) x 6.858 cms (W) x 6.604 cms (H)
- Product Type: Auto Accessory
- Package Quantity: 1
- Country Of Origin: United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C872M5O |
| Best Sellers Rank | #438,624 in Automotive ( See Top 100 in Automotive ) #675 in Engine & Parts Fluid Cleaners #11,384 in Car Care |
| Brand | Johnsen's |
| Customer Reviews | 4.6 4.6 out of 5 stars (691) |
| Date First Available | April 6, 2013 |
| Item Weight | 10 ounces |
| Item model number | 4721 |
| Manufacturer | Johnsen's |
| Manufacturer Part Number | 4721 |
| Model | 4721 |
| Product Dimensions | 2.7 x 2.6 x 2.6 inches |

## Product Details

- **Brand:** Johnsen's
- **Global Trade Identification Number:** 00039101006147
- **Item Weight:** 10 Ounces
- **Manufacturer:** Johnsen's
- **Product Dimensions:** 2.7"W x 2.6"H

## Images

![4721 Mass Air Flow Sensor Cleaner - 10 oz. - Image 1](https://m.media-amazon.com/images/I/71P9HL7lO0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ try this before buying parts
*by I***C on December 1, 2025*

bought product in hopes of eliminating troublesome check engine light...cleaned contacts and works perfectly...exactly as described

### ⭐⭐⭐⭐⭐ Spray
*by T***R on February 5, 2025*

Love this stuff use it on lawn mower and snow blowers it works real good.

### ⭐⭐⭐⭐⭐ CRC, ya' done got too 'spensive!
*by C***V on April 13, 2024*

I've been using CRC MAF cleaner for years, but they've gotten a little proud of the price, so I decided to give this stuff a try. Honestly, seems to work exactly the same for less money. It cleans well and evaporates quickly. I've not had any error codes using it, so all things considered, this product is a better value than ol' standby.

## Frequently Bought Together

- Johnsen's 4721 Mass Air Flow Sensor Cleaner - 10 oz.
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- Gumout 800002231 Carb and Choke Cleaner Jet Spray - 14 oz.

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**Shop now:** [https://www.desertcart.pt/products/32590054-4721-mass-air-flow-sensor-cleaner-10-oz](https://www.desertcart.pt/products/32590054-4721-mass-air-flow-sensor-cleaner-10-oz)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-16*