Temporary System Outage from July 9th at 7 p.m. to July 14th at 7 a.m. Orders placed during the outage will be stored and processed after the updates are completed on July 14th.
Save Now. Shop Our Seasonal Sale. Browse Sale
Three Arm Knob
Item#:
720-0170
Free Shipping on Parts Orders over $45.
price.from
$10.84
price.msrp
Three Arm Knob
Item#:
720-0170
Free Shipping on Parts Orders over $45.
price.from
$10.84
price.msrp
In Stock
Have a Model Number?
Arrives as soon as July 17 to 43215
Change Zip Code
This part replaces:
- 1643-057
- 42391
- 681-0048
- 720-0170P
- 722-0108
- 722-0120
- 920-0170
- YA-1643-057
- YA-42391
Specs & Pledge
Specifications
- Series Knob
Shop with Confidence
Avoid frustration when buying parts, attachments, and accessories with the Troy-Bilt Right Part Pledge. If you purchase the wrong part from Troy-Bilt or a Troy-Bilt authorized online reseller, Troy-Bilt, or your Troy-Bilt authorized online reseller will work with you to identify the correct part for your equipment and initiate a free exchange. See full terms and conditions.
Fast, Free Shipping
Parts orders over $50 ship free.*All orders placed before 5 pm ship next day. Standard shipping averages 3 business days for delivery. Expedited shipping is available.
*Some exclusions apply. Read full shipping policy.
![](https://www.troybilt.com/on/demandware.static/-/Sites-troybilt-Library/en_US/v1783852285182/Icons/HomePageIcons-blackWred_HassleFreeReturns_125x125.png"){kind=icon}
Hassle Free Returns
We'll make sure you get the right part. Enjoy 90-day returns for unused parts and we won't penalize you for ordering the wrong part when you follow our return policy.*
*Some exclusions apply. Read full returns policy.
Chat with Experts
Our outdoor power equipment experts are just one click away through Live Chat. Available Mon-Fri 8:30am - 5pm EDT.
Phone support also available:
1-800-828-5500
