DAYCO Belt Tensioner: Self-Adjusting Belt Tensioner, 89442, Heavy Duty
The DAYCO Self-Adjusting Belt Tensioner (SKU 4HMH4, part number 89442) is a heavy-duty, single-pulley tensioner designed for automatic belt tensioning. As a trusted industrial solutions provider, 3G Electric…
SKU 3G-OTH-486265
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Product Description
The DAYCO Self-Adjusting Belt Tensioner (SKU 4HMH4, part number 89442) is a heavy-duty, single-pulley tensioner designed for automatic belt tensioning. As a trusted industrial solutions provider, 3G Electric interprets customer demand and delivers this genuine DAYCO component across 14 industrial departments — with specialist depth in combustion, pumps and controls — ensuring you get the right part for your application.
Frequently Asked Questions
What is the DAYCO 89442 belt tensioner used for?
The DAYCO 89442 self-adjusting belt tensioner automatically maintains proper belt tension in heavy-duty vehicle accessory drive systems. It is commonly used in trucks, buses, and industrial equipment to prevent belt slippage and reduce wear on pulleys and bearings.
What are the specifications of the DAYCO 89442 belt tensioner?
The DAYCO 89442 is a heavy-duty, single-pulley self-adjusting belt tensioner. It carries the DAYCO brand and manufacturer part number 89442. Designed for automatic tensioning, it ensures consistent belt performance in demanding applications.
Where to buy the DAYCO 89442 belt tensioner worldwide?
3G Electric supplies the genuine DAYCO 89442 belt tensioner worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this heavy-duty component to your facility. Contact us for availability and lead time.
How to install the DAYCO 89442 self-adjusting belt tensioner?
Installation typically involves removing the old tensioner, aligning the new DAYCO 89442 unit with the mounting bracket, and torquing the bolts to manufacturer specifications. Always consult the vehicle service manual for exact procedures and safety precautions.
Used in
Common applications for DAYCODAYCO Products
3G Electric supplies DAYCO vehicle self-adjusting belt tensioners. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









