DAYCOVehicle Self-Adjusting Belt Tensioners

DAYCO Belt Tensioner: Self-Adjusting Belt Tensioner, 89390, 2 Pulleys

The DAYCO Self-Adjusting Belt Tensioner (SKU 6XCT2, Manufacturer Part Number 89390) is a vehicle belt tensioner featuring 2 pulleys and a 3 1/8 in outside diameter. This OEM-spec component is designed for…

SKU 3G-OTH-486294

Brand

DAYCO

Item

Belt Tensioner: Self-Adjusting Belt Tensioner, 89390, 2 Pulleys

Technical Specifications

DAYCO

Manufacturer Part Number

89390

Type

89390

Pulleys

2

Outside Dia

3 1/8 in 

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Technical Documents

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DAYCO Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the DAYCO 89390 belt tensioner used for?

The DAYCO 89390 self-adjusting belt tensioner maintains proper tension in automotive accessory drive systems. It uses 2 pulleys with a 3 1/8 in outside diameter to reduce belt slip and noise, extending belt and component life in vehicles.

What are the specifications of the DAYCO 89390 belt tensioner?

The DAYCO 89390 belt tensioner has 2 pulleys, each with a 3 1/8 in outside diameter. It is a self-adjusting type designed for OEM-spec replacement in vehicle accessory drive systems. The manufacturer part number is 89390.

Where to buy the DAYCO 89390 belt tensioner worldwide?

3G Electric supplies the DAYCO 89390 belt tensioner to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this OEM-spec component to your facility, regardless of location.

How to install the DAYCO 89390 self-adjusting belt tensioner?

Install the DAYCO 89390 by releasing tension on the old tensioner, removing the mounting bolt, and fitting the new unit. Ensure the 2 pulleys align with the drive belt path. Torque the bolt to manufacturer specifications and verify smooth self-adjusting operation.

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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