Medium
1-2 hours
The idler pulley attaches to the mower belt keeper. This is available as an individual replacement part. This is an authentic Ariens replacement part that is sourced from the original manufacturer for use with lawn tractors. A wrench may be needed during the replacement of this item. It is made out of metal and will need to be replaced if it breaks.
Pulley.idler.4.50.raw 21546440
OEM part for: Ariens
Part Number: 21546440
$49.77
In Stock
Ships within 1 business day 
Compatibility
This Pulley.idler.4.50.raw will fit the following 129 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Ariens
Show More Compatible ModelsThis item works with the following types of products:
- Lawn Tractor Parts
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
1
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
perfect part, timely shipped, Thanks folks!!
This was a idler pulley for the deck. worked and fit pefect
Guest -
May 24, 2019
Verified Purchase
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Pulley.idler.4.50.raw
Does this number work on a 54 inch deck?
Douglas
for model number 960460004
asked on 2023-05-23
Hello Douglas, Thank you for writing. This fits the model number provided if you have the Riding Lawn Mower Tractors 936 Series. We hope this helps!
eReplacementParts Team May 23, 2023
Can the bearing be replaced?
Douglas
for model number 960460004
asked on 2023-05-23
Hi Douglas, Thank you for the question. Very sorry, the Bearing is only sold as part of the Pulley. We hope this helps!
eReplacementParts Team May 23, 2023
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Rider deck - two pulleys and new belt
Ron - May 20, 2018
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Socket set, Wrench Set, Jack
1. Take deck off mower.
2. Remove pulleys and spring.
3. Install new pulleys, spring and belt.
4. Put deck on mower.
2. Remove pulleys and spring.
3. Install new pulleys, spring and belt.
4. Put deck on mower.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
