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93.97 EUR
93.97 EUR
Dayco APV2642 Tensioner
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Dayco APV2642 Belt Tensioner Overview
The Dayco APV2642 is a high‑performance belt tensioner engineered for the Mazda, Mercedes-Benz A‑Class (W168), and other vehicles that use a trapezoidal V‑belt. Designed with precision machining and durable materials, this component ensures optimal belt tension, prolongs belt life, and maintains engine performance.
Key Functional Attributes
- Belt Type Compatibility: Specifically built for trapezoidal V‑belts with ribbed or non‑ribbed profiles used in many European cars.
- Tensioning Mechanism: Features a spring‑loaded arm that automatically adjusts to maintain consistent belt tension across temperature and load variations.
- Material Construction: Made from high‑strength alloy steel with a corrosion‑resistant coating, ensuring longevity even in harsh operating environments.
- Compact Design: Slim profile allows installation in tight engine bay spaces without compromising airflow or clearance.
Technical Specifications
| Specification | Value |
|---|---|
| Belt Type | Trapezoidal V‑belt (ribbed or non‑ribbed) |
| Model Compatibility | Mazda, Mercedes-Benz A‑Class W168, and other vehicles with similar belt systems. |
| Tensioning Force | Specified by Dayco for optimal belt tension (exact value varies by vehicle). |
| Material | Alloy steel with corrosion‑resistant finish. |
| Dimensions | Compact, designed to fit standard engine bay clearance. |
| Installation Type | Replaceable tensioner; requires removal of the existing belt and mounting bracket. |
Installation Guide
Installing the Dayco APV2642 involves a few critical steps to ensure proper function:
- Safety First: Disconnect the battery and allow the engine to cool completely.
- Belt Removal: Loosen the existing tensioner or use a belt‑pulling tool to release the belt from all pulleys.
- Remove Old Tensioner: Unscrew the mounting bolts and carefully detach the old tensioner, noting its orientation for correct placement of the new unit.
- Mount New Tensioner: Position the Dayco APV2642, align it with the mounting holes, and secure it using the supplied bolts. Ensure the spring arm is correctly seated against the belt path.
- Belt Re‑installation: Route the belt around all pulleys, ensuring proper alignment on each tooth. Use a belt tension gauge or follow the manufacturer’s torque specifications to achieve correct tension.
- Final Checks: Verify that the belt moves freely without rubbing against any component and that the tensioner arm rotates smoothly.
Performance Benefits
- Consistent Belt Tension: The spring‑loaded design compensates for belt wear, maintaining optimal tension throughout the belt’s life cycle.
- Reduced Vibration: Proper tension minimizes belt vibration, leading to quieter engine operation and less stress on pulleys.
- Extended Belt Life: By preventing over‑tension or slack, the tensioner helps avoid premature belt failure.
- Improved Engine Efficiency: A correctly tensioned belt ensures efficient power transfer from the crankshaft to accessories such as alternators and water pumps.
Maintenance Tips
Although the Dayco APV2642 is designed for durability, regular inspection can preempt issues:
- Check for visible wear or damage on the tensioner arm and spring.
- Inspect belt alignment after each major service to confirm proper routing.
- Look for signs of corrosion or oil contamination that could affect the tensioner's operation.
Compatibility Summary
The Dayco APV2642 is a versatile component suitable for:
- Mazda models with trapezoidal V‑belt systems.
- Mercedes-Benz A‑Class (W168) and other vehicles that use ribbed or non‑ribbed trapezoidal belts.
- Various European cars requiring a reliable belt tensioner for accessory drive systems.
Conclusion
The Dayco APV2642 Belt Tensioner delivers dependable performance, precise tension control, and robust construction. Its design caters to the demanding requirements of modern engine bays while ensuring ease of installation and long‑term reliability. Whether you’re servicing a Mazda or a Mercedes-Benz A‑Class, this tensioner is engineered to keep your belt system operating at peak efficiency.
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 124.68 EUR  111.83 EUR  85.60 EUR |
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| Tags | V-Ribbed Belt Tensioner pulley Dayco Auxiliary Dayco APV2642 Tensioner |
| Identifiers | |
| Brand |  Dayco is a brand of automotive and industrial belts, hoses, and other rubber products. It was founded in 1907 and is headquartered in Valley View, Ohio. |
| Model | Dayco APV2642 |
| MPN | Dayco APV2642 |
| ID | 7061495 |
| Dimensions / Weight | |
| Key Features | |
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