DAYCO Belt Tensioner: Self-Adjusting Belt Tensioner, 89447, Heavy Duty
The DAYCO Self-Adjusting Belt Tensioner (SKU 4HME9, part number 89447) is a heavy-duty vehicle component with a single pulley. 3G Electric interprets customer demand and delivers this genuine DAYCO tensioner across…
SKU 3G-OTH-486368
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Product Description
The DAYCO Self-Adjusting Belt Tensioner (SKU 4HME9, part number 89447) is a heavy-duty vehicle component with a single pulley. 3G Electric interprets customer demand and delivers this genuine DAYCO tensioner across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls serves as a trust anchor, ensuring we source the right industrial solution, not just a catalog item.
Frequently Asked Questions
What is the DAYCO 89447 belt tensioner used for?
The DAYCO 89447 self-adjusting belt tensioner maintains proper tension on engine accessory drive belts in heavy-duty vehicles. It ensures reliable operation of alternators, water pumps, and other belt-driven components, reducing slippage and extending belt life.
What are the specifications of the DAYCO 89447 belt tensioner?
The DAYCO 89447 is a heavy-duty self-adjusting belt tensioner with a single pulley. It is rated for heavy-duty performance and carries the manufacturer part number 89447. This genuine DAYCO component is designed for demanding vehicle applications.
Where to buy the DAYCO 89447 belt tensioner worldwide?
3G Electric supplies the genuine DAYCO 89447 belt tensioner to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us to order this heavy-duty tensioner for your vehicle application.
How to install the DAYCO 89447 belt tensioner?
Installation of the DAYCO 89447 belt tensioner typically involves removing the old tensioner, aligning the new 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.









