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DAYCO Belt Tensioner: Self-Adjusting Belt Tensioner, 89258, 1 Pulleys - Vehicle Self-Adjusting Belt Tensioners
DAYCOVehicle Self-Adjusting Belt Tensioners

DAYCO Belt Tensioner: Self-Adjusting Belt Tensioner, 89258, 1 Pulleys

The DAYCO Self-Adjusting Belt Tensioner (model 89258) is a single-pulley tensioner with a 2 3/8 in outside diameter, designed for vehicle accessory belt drive systems. As an OEM-spec replacement part, it maintains…

SKU 3G-OTH-486345

Brand
DAYCO
Item
Belt Tensioner: Self-Adjusting Belt Tensioner, 89258, 1 Pulleys
Category
Vehicle Self-Adjusting Belt Tensioners
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Technical Specifications

DAYCO
Manufacturer Part Number
89258
Type
89258
Pulleys
1
Outside Dia
2 3/8 in
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DAYCO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DAYCO Self-Adjusting Belt Tensioner (model 89258) is a single-pulley tensioner with a 2 3/8 in outside diameter, designed for vehicle accessory belt drive systems. As an OEM-spec replacement part, it maintains proper belt tension automatically to reduce slippage and wear.

Frequently Asked Questions

What is the DAYCO 89258 belt tensioner used for?

The DAYCO 89258 self-adjusting belt tensioner maintains proper tension in vehicle accessory belt drive systems. It automatically compensates for belt stretch and wear, reducing slippage and extending belt life. This single-pulley tensioner with a 2 3/8 in outside diameter is an OEM-spec replacement part for automotive applications.

What are the specifications of the DAYCO 89258 belt tensioner?

The DAYCO 89258 is a self-adjusting belt tensioner with 1 pulley and a 2 3/8 in outside diameter. It is designed as an OEM-spec replacement part for vehicle accessory belt drives. The manufacturer part number is 89258, and it is produced by DAYCO, a trusted brand in automotive components.

Where to buy the DAYCO 89258 belt tensioner worldwide?

3G Electric supplies the DAYCO 89258 self-adjusting belt tensioner to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this OEM-spec replacement part for your vehicle accessory belt drive system.

How to install the DAYCO 89258 belt tensioner?

Installation of the DAYCO 89258 self-adjusting belt tensioner follows standard automotive practice: relieve belt tension, remove the old tensioner, align the new unit with mounting holes, torque bolts to manufacturer specifications, and route the belt over the pulley. Always consult the vehicle service manual for exact procedures and torque values.

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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