Easy
30-60 minutes
This is an authentic manufacturer-sourced part that is specially made for use with riding lawnmowers and garden tractors. The idler pulley is used to secure the belt, unfortunately, over time it may wear out, get damaged or lost eventually requiring a replacement. It is an identical replacement for a missing or a faulty component that was installed on a new unit, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this part. Keep in mind this high-quality idler pulley is made of durable metal and is sold individually. Note, the hardware to secure it is sold separately.
Pulley, Idler, Flat, Plated 532173437
OEM part for: Husqvarna, Ryobi
Part Number: 532173437
$24.90
In Stock
Ships within 1 business day 
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Compatibility
This Pulley, Idler, Flat, Plated will fit the following 689 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 689 matching models.
689 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Craftsman
- Husqvarna
- Jonsered
- Poulan
- Ryobi
- Weed Eater
This item works with the following types of products:
- Lawn Mower
- Lawn Tractor
This part replaces obsolete part #: 5321658-88, 532165888, 173437, 165888
Customer Part Reviews ?
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Timely and accurate.
Fit perfectly and runs good.
Guest -
July 20, 2023
Verified Purchase
Exact replacements. Modified installation by welding carriage bolts in place. Didn't have to hold them in place while the nuts were tightened.
See above.
Guest -
July 26, 2021
Verified Purchase
Quality
Fast shipping and excellent customer service.
Product was as described and functioned well.
Donnie -
June 10, 2021
Verified Purchase
Flat Idler pulley
Smooth, fast, correct and on time
Guest -
May 19, 2021
Verified Purchase
Questions & Answers ?
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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.
Engagin the mower blades caused smoke to come from under the mower.
Robert - June 19, 2016
👍 5 of 6 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Pliers, Socket set
Removed the mower deck from the machine. Problem had to be caused by something other than the belt. Visual inspection of pulleys revealed one had missing bearings and sat lopsided on the pulley shaft. Ordered second flat pulley just in case. Reinstalled pulleys, deck and new belt. Mower worked fine. Followed deck removal procedure in owners manual.
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Idler puley bearings failed
Ralph - September 20, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
1. Removed mower deck from lawn mower by disconnecting linkage and mower drive belt.
2. Removed hex flange nut from carriage bolt.
3. Removed flat washer from top of carriage bolt.
4. Removed bad flt pulley
5. Removed carriage bolt from mounting plate.
6. Installed new carriage bolt
7. Installed new flat idler pulley
8. Installed new flange nut
9. Installed new washer
10. Installed mower deck, reversing procedure used to remove unit.
2. Removed hex flange nut from carriage bolt.
3. Removed flat washer from top of carriage bolt.
4. Removed bad flt pulley
5. Removed carriage bolt from mounting plate.
6. Installed new carriage bolt
7. Installed new flat idler pulley
8. Installed new flange nut
9. Installed new washer
10. Installed mower deck, reversing procedure used to remove unit.
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A cutting deck pulley bearing, one of two, locked up
Dan - July 8, 2022
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set
Parts Used
After disconnecting all of the connecting rods and alignment link between the cutting deck and the tractor frame, I pulled the deck out from under the tractor. It is a simple chore to remove the locked-up pulley and replace it with the new one. While the deck is in the open and its' components easily assessable, clean up and lube the sliding surfaces. Afterwards, push/pull the deck under the tractor and install the alignment link and reconnect and adjust all of those rods. Happy Summer cutting that grass!!!
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Bearing went out on the idler pulleys.
Steve - July 28, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Pliers, Socket set
Disconnected mower deck. Took off mounting bolts and idlers, put on new ones and tightened the bolts, put new spring on and reconnected the mower deck and belt. Smooth as silk!
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IDLER PULLEY BEARING WAS WORN OUT.
Mike - August 10, 2020
Tool Type
Lawn Tractor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set
UNBOLTED THE IDLER PULLEYS AND BOLTED IN THE NEW PARTS. EXACT MATCH FOR WHAT WAS REMOVED! MACHINE WORKS LIKE NEW AGAIN AND THE REPAIR MADE ME CLEAN UP THE MOWER DECK WHICH MAKES THE SAFETY FEATURES WORK AGAIN, LIKE THEY WERE DESIGNED. ADVICE- TAKE A PHOTO OF THE ORIGINAL ASSEMBLY BEFORE REMOVING ALL THESE PIECES, IT MAKES IT MUCH EASIER FOR AN OLDER BRAIN TO REMEMBER HOW TO PUT IT BACK TOGETHER.
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Bad bearings caused belt to break
Thomas - April 18, 2018
Tool Type
Lawn Tractor
Difficulty
Easy
Time
More than 2 hours
Tools Used
Pliers, Socket set, Wrench Set, Nutdriver
Removed deck and cleaned
Removed original idlers and mandrels
Cleaned mounting surfaces
Installed new idlers and mandrels
Installed new v belt
Re-installed deck
Connected v belt
Adjusted deck
Test drive worked great
Removed original idlers and mandrels
Cleaned mounting surfaces
Installed new idlers and mandrels
Installed new v belt
Re-installed deck
Connected v belt
Adjusted deck
Test drive worked great
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Bearing seized
carl - December 25, 2015
👍 0 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set
Took lower deck of lawnmower and removed the 2 nuts one on each pulley and replaced with new pulleys I used same nuts. re- installed lower deck. it works perfectly now. Thanks ereplacement.
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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.
