Dayco APV1156 Automatic Serpentine Belt Tensioner

Product Overview

The Dayco APV1156 Automatic Serpentine Belt Tensioner is engineered to maintain constant, reliable tension on serpentine belt drives that power engine accessories. Its original flat spring design minimises variations in operating tension to improve belt life, reduce noise and enhance accessory performance.

By controlling belt tension throughout the service life of the belt, this tensioner helps reduce the risk of premature accessory bearing failure from excessive initial tension and limits belt slippage, noise and performance loss as the belt stretches and wears.

Key Features

• Flat spring design engineered for consistent belt tension across the operating range.
• PTFE strip wound within the spring for improved abrasion resistance and durability.
• Spring coated for enhanced rust and corrosion resistance in harsh environments.
• Steel locator pin (where required by application) for secure and accurate positioning.
• Heavy-duty cast aluminium spring case designed to resist cracking and fatigue.
• Heavy-duty cast aluminium arm for added strength and reduced distortion under load.
• Steel pivot tube (where required) to meet critical torque and load demands.
• Thermoplastic rubber spring slot plug (where applicable) to help keep out contaminants.
• Lubricated nylon pivot tube bushing and spring bushing for smoother, quieter operation.
• Rubber O-ring seal (where applicable) to protect internal components from dust and grime.
• Zinc-coated mounting bolt for improved corrosion resistance and service life.

Specifications

• Part Number: APV1156
• Brand: Dayco
• Type: Automatic serpentine belt tensioner

Application Notes

This is an aftermarket automatic serpentine belt tensioner. Always check part number APV1156 against your existing component or a trusted parts catalogue to confirm suitability for your specific vehicle and engine configuration before installation.