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DAYCO 89310 Self-Adjusting Belt Tensioner, 1 Pulley, 3 1/2 in Outside Diameter - Vehicle Self-Adjusting Belt Tensioners
DAYCOVehicle Self-Adjusting Belt Tensioners

DAYCO 89310 Self-Adjusting Belt Tensioner, 1 Pulley, 3 1/2 in Outside Diameter

The DAYCO 89310 Self-Adjusting Belt Tensioner is a vehicle belt tensioner with 1 pulley and a 3 1/2 in outside diameter. As a DAYCO-branded component, it is designed for self-adjusting operation in automotive belt…

SKU 3G-OTH-486424

Brand
DAYCO
Item
89310 Self-Adjusting Belt Tensioner, 1 Pulley, 3 1/2 in Outside Diameter
Category
Vehicle Self-Adjusting Belt Tensioners
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Technical Specifications

DAYCO
Manufacturer Part Number
89310
Type
89310
Pulleys
1
Outside Dia
3 1/2 in

Technical Documents

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DAYCO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DAYCO 89310 Self-Adjusting Belt Tensioner is a vehicle belt tensioner with 1 pulley and a 3 1/2 in outside diameter. As a DAYCO-branded component, it is designed for self-adjusting operation in automotive belt drive systems.

Frequently Asked Questions

What is the DAYCO 89310 self-adjusting belt tensioner used for?

The DAYCO 89310 self-adjusting belt tensioner maintains proper tension in automotive serpentine or accessory belt drive systems. It automatically compensates for belt stretch and wear, reducing slippage and noise. This 1-pulley unit with a 3 1/2 in outside diameter is a direct replacement for many vehicle applications.

What are the specifications of the DAYCO 89310 belt tensioner?

The DAYCO 89310 is a self-adjusting belt tensioner with 1 pulley and a 3 1/2 in outside diameter. The manufacturer part number is 89310. It is designed for automotive belt drive systems and provides automatic tension adjustment to extend belt life and reduce maintenance.

Where to buy the DAYCO 89310 belt tensioner worldwide?

3G Electric supplies the DAYCO 89310 self-adjusting belt tensioner to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this DAYCO component.

How to install the DAYCO 89310 self-adjusting belt tensioner?

Installation typically involves removing the old tensioner, aligning the new DAYCO 89310 unit with the mounting holes, and torquing the bolts to manufacturer specifications. Always release belt tension before removal and ensure the pulley rotates freely. Refer to your vehicle service manual for exact procedures.

Used in

Common applications for DAYCO
Automotive service centers — DAYCO metal exhaust hoses (SKU 4GKA4, 4GKA5) for flexible exhaust extraction from vehicle tailpipes during repair.
Marine engine rooms — DAYCO 304 stainless steel exhaust hoses (SKU 4GKA8, 4GKA7) for venting diesel generator exhaust in confined spaces.
Fuel system maintenance — DAYCO SAE J30R7 fuel hoses (SKU 4GJW1) for replacement of low-pressure fuel lines in industrial engines.
High-temperature fuel injection — DAYCO FKM fuel injection hose (SKU 4GJW6) for return lines on common-rail diesel systems operating above 250°F.
Industrial ventilation — DAYCO metal exhaust kits (SKU 4GKC1) for connecting fume hoods to exhaust ducts in welding or chemical processing areas.
Biofuel handling — DAYCO SAE J1527 fuel hoses (SKU 4GJW3) for transfer of biodiesel blends in agricultural equipment refueling stations.

DAYCO 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.

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