Cummins Idler Pulley 3681587 – Smooth Belt Tension for Engine Performance
The Cummins Idler Pulley 3681587 is designed to maintain proper tension and alignment of the engine’s accessory drive belt. Built with precision and durability, it ensures smooth rotation of components such as the alternator, water pump, and air conditioning compressor. As part of trusted Cummins parts, this pulley plays a key role in keeping your engine running reliably.
Even though it’s a relatively small part, the idler pulley directly affects belt life and engine efficiency. That’s why choosing the Cummins genuine parts version of 3681587 ensures optimal fit and long-lasting performance.
📦 Specifications
- Part Number: 3681587
- Part Name: Idler Pulley
- Material: High-strength steel with sealed bearing
- Finish: Factory-coated for corrosion resistance
- Condition: 100% Brand New
- Category: Engine Belt Drive Components
- Compatibility: Designed for specific Cummins parts engines
- Manufacturing Standard: Meets Cummins genuine parts OEM requirements
✅ Key Features
- Maintains correct drive belt tension and alignment
- Reduces noise and vibration from belt systems
- Sealed bearing for longer service life and minimal maintenance
- Resistant to high temperatures and heavy loads
- Seamlessly integrates with other Cummins parts for stable performance
🔧 Technical Insights
The 3681587 Idler Pulley features a sealed ball bearing system that operates quietly while withstanding high belt loads.
Thanks to its precision-machined groove and solid mounting, it minimizes belt wear and slippage.
Furthermore, the use of quality materials ensures resistance to both corrosion and heat—essential in demanding engine environments.
💡 Application Scenarios
This idler pulley is typically used in:
- 🔹 Commercial diesel engines requiring stable accessory drive systems
- 🔹 Trucks and buses where smooth belt motion is critical
- 🔹 Generators and construction equipment powered by Cummins parts
- 🔹 Repair or maintenance involving worn or noisy pulleys
- 🔹 OEM replacements using Cummins genuine parts for belt-driven accessories
🚚 Availability
The Cummins Idler Pulley 3681587 is available for global delivery.
To make sure it fits your engine perfectly, please provide the engine serial number (ESN). Our support team will verify compatibility and help you get the right Cummins parts solution fast.
