---
product_id: 121221221
title: "Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051"
brand: "briggs & stratton"
price: "$20.73"
currency: USD
in_stock: true
reviews_count: 8
category: "Briggs & Stratton"
url: https://www.desertcart.us/products/121221221-briggs-and-stratton-691668-air-cleaner-knob-replaces-493903-692297
store_origin: US
region: United States of America
---

# Engine protection Easy replacement OEM precision fit Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051

**Brand:** briggs & stratton
**Price:** $20.73
**Availability:** ✅ In Stock

## Summary

> ⚙️ Keep your engine running clean and mean with genuine precision!

## Quick Answers

- **What is this?** Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 by briggs & stratton
- **How much does it cost?** $20.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/121221221-briggs-and-stratton-691668-air-cleaner-knob-replaces-493903-692297)

## Best For

- briggs & stratton enthusiasts

## Why This Product

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

## Key Features

- • **EPA Compliant:** Maintains emission standards by using only genuine parts designed for Briggs & Stratton engines.
- • **Genuine OEM Quality:** Engineered by Briggs & Stratton to exact standards for flawless compatibility.
- • **Durable Construction:** Built to withstand outdoor conditions and keep your engine sealed tight.
- • **Universal Compatibility:** Replaces multiple part numbers including 493903, 692297, and 281051 for versatile use.
- • **Optimized Engine Performance:** Ensures your air cleaner stays securely fastened, preventing dust intake and engine wear.

## Overview

The Briggs & Stratton 691668 Air Cleaner Knob is a genuine OEM replacement part designed to fit multiple Briggs & Stratton engine models. It ensures a secure seal on your air cleaner, protecting your engine from dust and debris while maintaining EPA emission compliance. Lightweight and durable, this knob is essential for maintaining peak outdoor power equipment performance.

## Description

Keep it Running - Keep it Genuine. Help keep your outdoor power equipment running at peak performance by ordering Briggs & Stratton replacement and maintenance parts. You can find the right part you need including carburetors, air filters, spark plugs, tune-up kits and other engine repair parts. Only Briggs & Stratton genuine parts are specially designed to exact OEM standards, manufactured and tested to help deliver optimum performance in Briggs & Stratton engines. Not only are Briggs & Stratton genuine parts guaranteed to fit, but using them ensures that the Briggs & Stratton engine they are installed on complies with applicable (EPA) emission regulations.

Review: Fit perfect. - Great replacement for missing air filter knob on a lesco leaf blower.
Review: The engine air cleaner gets 2 nuts. This is the outer nut. - I bought a used cub cadet 1170 riding mower and drove it half a season not knowing the air cleaner has not properly sealed. The guy before me probably wondered where the extra wingnut belonged. I caught the absent nut when I decided to partly tear down the engine for a good cleaning under the cowling. I missed it the first time I looked at the filter but was thinking I might need parts for the governor and spotted 2 nuts in the parts diagram. The lower nut was for holding the filter secure and this nut is to hold the filter cover secure. The inner (lower) nut was being used where this one belongs. It means who knows how long this engine ran while sucking dust. No biggy. It's not burning through oil. It was the correct wing nut for the job.

## Features

- Briggs & Stratton 691668
- Air Cleaner Knob
- Genuine Briggs & Stratton Part
- New OEM Part
- Replaces Old Briggs # 493903, 212706, 212292, 691668, 692297, 281051, 231532, 94249

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005F6RITK |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #305,679 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,996 in Lawn Mower Air Filters |
| Brand | Briggs & Stratton |
| Customer Reviews | 4.7 4.7 out of 5 stars (83) |
| Global Trade Identification Number | 00024847239799 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.8 ounces |
| Item model number | 691668 |
| Manufacturer | Briggs & Stratton |
| OEM Part Number | 691668 |
| Product Dimensions | 1 x 7 x 8 inches |
| UPC | 024847239799 |

## Product Details

- **Brand:** Briggs & Stratton
- **Fit Type:** Vehicle Specific Fit
- **Global Trade Identification Number:** 00024847239799
- **OEM Part Number:** 691668
- **Product Grade:** Replacement Part

## Images

![Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 - Image 1](https://m.media-amazon.com/images/I/612kR3x7WsL.jpg)
![Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 - Image 2](https://m.media-amazon.com/images/I/61mJx4JVbYL.jpg)
![Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 - Image 3](https://m.media-amazon.com/images/I/61owepd5dKL.jpg)
![Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 - Image 4](https://m.media-amazon.com/images/I/71RYeyVHunL.jpg)
![Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051 - Image 5](https://m.media-amazon.com/images/I/31LvMPUlP5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fit perfect.
*by C***B on January 22, 2025*

Great replacement for missing air filter knob on a lesco leaf blower.

### ⭐⭐⭐⭐⭐ The engine air cleaner gets 2 nuts. This is the outer nut.
*by J***K on August 29, 2021*

I bought a used cub cadet 1170 riding mower and drove it half a season not knowing the air cleaner has not properly sealed. The guy before me probably wondered where the extra wingnut belonged. I caught the absent nut when I decided to partly tear down the engine for a good cleaning under the cowling. I missed it the first time I looked at the filter but was thinking I might need parts for the governor and spotted 2 nuts in the parts diagram. The lower nut was for holding the filter secure and this nut is to hold the filter cover secure. The inner (lower) nut was being used where this one belongs. It means who knows how long this engine ran while sucking dust. No biggy. It's not burning through oil. It was the correct wing nut for the job.

### ⭐⭐⭐⭐⭐ Works on at least one Snapper!
*by J***I on January 20, 2026*

Worked great on my snapper 28” with the 9hp Briggs.

## Frequently Bought Together

- Briggs & Stratton 691668 Air Cleaner Knob Replaces 493903 692297 281051
- Briggs & Stratton 691730 Air Filter Retainer Replaces 222272, 691730
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-09*