It is an authentic replacement part that is supplied by the original equipment manufacturer for use with Ariens riding lawn mowers and garden tractors. This is the main deck belt that drives the blades, over time belts tend to wear out and may stretch eventually requiring replacement to maintain peak performance. It is a high-quality component which is made of durable rubber material and it is sold individually.
Belt- Primary Mower 42-inch 21547025
OEM part for: Ariens
Part Number: 21547025
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![Ariens Ariens](images/157125_white.png)
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Compatibility
This Belt- Primary Mower 42-inch will fit the following 29 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
This part replaces obsolete part #: 21547238
Customer Part Reviews ?
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Does this fit my product?Questions & Answers for Belt- Primary Mower 42-inch
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.
Belt for transmission broke
Tool Type
Lawn Tractor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Pliers, Power Drill, Socket set, None
Parts Used
2. Drained fuel tank
3. Tilted mower over on side away from air filter
4. Removed cover over belt
5. Unhooked spring from transmission
6. Removed bracket from crankshaft pulley
7. Tilted transmission to remove bracket cover over pulley
8. Removed broken belt
9. Put new belt on over blade and on to pulleys
10. Replaced everything in reverse order
11. Filled fuel tank and off we went
Mower deck belt change and engine oil change
Tool Type
Lawn Tractor
Difficulty
Medium
Time
15-30 minutes
Tools Used
Pliers, Socket set, Wrench Set
Belt was cracked and ready to break
Tool Type
Lawn Tractor
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, none
Parts Used
2. Cleaned away grass clippings
3. Removed old belt from motor pulley
4. Replaced with new belt
5. Removed belt from other pulleys leaving the side with the adjustable pulley to last and replace with new belt as you go to match placement.
6.Push adjuster pulley to install final loop. remove old pulley and if you can't, just cut it.
7. Lift deck lever
8. Done.
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.