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Description
03774151 Idler Arm Weldment – Black | Genuine Ariens OEM Replacement
The 03774151 Idler Arm Weldment – Black is a genuine Ariens OEM replacement component designed for compatible Ariens zero-turn mower deck assemblies. This welded idler arm supports the deck idler pulley and helps maintain proper belt tension and routing during mower operation. Ariens lists 03774151 as “WMT, IDLER ARM - BLACK.”
Features That Make a Difference
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Genuine Ariens OEM replacement part.
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Part Number: 03774151.
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Product Type: Idler Arm Weldment.
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Finish: Black.
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Designed for compatible mower deck idler assemblies.
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Supports the idler pulley and belt-tension mechanism.
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Heavy-duty welded construction for reliable service.
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Used on select Ariens zero-turn mower applications.
Benefits
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Helps maintain proper mower deck belt tension.
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Supports correct idler pulley positioning.
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Helps restore proper belt routing and deck operation.
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Replaces a bent, cracked, worn, or damaged idler arm.
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OEM construction helps provide proper fit and function.
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Ideal for mower deck repair and maintenance.
Specifications
| Specification | Details |
|---|---|
| Part Number | 03774151 |
| Product Type | Idler Arm Weldment |
| Description | WMT, IDLER ARM – BLACK |
| Brand | Ariens |
| Finish | Black |
| Application | Compatible Ariens Zero-Turn Mowers |
| System | Mower Deck / Idler Assembly |
| Use | Repair / Replacement |
| Part Type | Genuine OEM Replacement |
Compatibility
The 03774151 Idler Arm Weldment is used on select Ariens zero-turn mower deck applications. Ariens parts documentation identifies it as an Idler Pivot Arm, while newer parts listings describe it as WMT, IDLER ARM – BLACK.
It is listed in parts diagrams for several Ariens mower models, including select Apex 52-inch and 60-inch applications.
Always verify your exact mower model, serial number, deck size, parts diagram, and original idler-arm part number before ordering to ensure proper compatibility.
Why Replace the Idler Arm?
The idler arm plays an important role in maintaining the mower deck belt system. A bent or damaged arm can affect pulley alignment and belt tension, potentially contributing to belt slippage or improper deck operation.
Replacing the damaged assembly with the correct OEM component helps restore the intended idler and belt-drive function.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality OEM and replacement parts for lawn and garden equipment.
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Genuine OEM replacement parts
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Quality products for residential and commercial equipment
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Reliable parts for mower repair and maintenance
Restore the proper belt-tension system on your compatible Ariens mower with the Ariens 03774151 Idler Arm Weldment – Black, a genuine OEM replacement designed for dependable mower deck service.



