Dayco Accessory Drive Belt Tensioner Assembly 89370

Dayco Accessory Drive Belt Tensioner Assembly 89370 - view 2

Dayco Accessory Drive Belt Tensioner Assembly P/N:89370

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$105.99

MPN: 89370

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Dayco Accessory Drive Belt Tensioner Assembly P/N:89370

$105.99

Description

Keep every belt-driven accessory spinning with the Dayco Accessory Drive Belt Tensioner Assembly 89370, an automatic tensioner that applies steady spring-loaded pressure to the serpentine belt to help maintain proper belt tension and control belt vibration. It drops in as a direct-fit replacement for the listed applications, including the 2005-2008 Ford Escape [V6-3.0L], 2002-2005 Ford Thunderbird [V8-3.9L], 2003-2008 Jaguar S-Type [V6-3.0L], 2005-2009 Land Rover LR3 [V8-4.4L], and 2001-2005 Lincoln LS [V6-3.0L] — see the Buyer's Guide tab for the full list.

Automatic tensioner: self-adjusting design that takes up slack as the serpentine belt wears.
Belt type: serpentine, with a clockwise rotation direction.
Single pulley: one flat pulley measuring 76 mm in diameter and 30.9 mm wide.
Country of origin: United States.

The tensioner arm and spring maintain the load on the belt so the pulleys and accessories stay properly driven. Signs the tensioner may need replacing include belt squeal or chirp, a fluttering or bouncing belt, and a worn or noisy pulley bearing. If a failed tensioner is the cause of these symptoms, this assembly replaces it. Diagnose the noise before replacing, as belt and idler condition can produce similar signs.

Manufacturer part number 89370.

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

780222, 38279, 49344, 5713, 999707A, BT-81, 1X4Z-6B209-AA, 3W4Z-6B209-AA, 4L8E-6B209-AB, 4L8E-6B209-AC, 4L8Z-6B209-AA, 4R8E-6B209-AA, 4R8E-6B209-AB, 4R8Z-6B209-AA, AJ88633, C2S45579

Frequently Asked Questions

What does this tensioner do?

It applies constant spring-loaded pressure to the serpentine belt, helping maintain proper tension and control belt vibration so the belt-driven accessories stay properly driven.

Will part 89370 fit my vehicle?

It's a direct-fit replacement for the listed applications, such as the 2006-2009 Ford Fusion [V6-3.0L] and 2005-2009 Jaguar XJ8 [V8-4.2L]. Check the Buyer's Guide tab for the complete fitment list.

What belt type is this tensioner for?

It is designed for a serpentine belt and rotates in the clockwise direction, per the catalog specifications.

What are the signs of a failing belt tensioner?

Common signs include belt squeal or chirp, a fluttering or bouncing belt, and a worn or noisy pulley bearing. Diagnose the source before replacing, since the belt or idler can cause similar symptoms.

What are the pulley specifications?

It has a single flat pulley measuring 76 mm in diameter and 30.9 mm wide. The tensioner is an automatic, self-adjusting type made in the United States.