Dayco 89247 belt tensioner for the 1994-2004 Ford Mustang V6 3.8L, the 2004 Mustang V6 3.9L and other vehicles keeps tension on the serpentine belt that drives the engine accessories. As a Dayco automatic belt tensioner, also called a serpentine belt tensioner, it adjusts to belt tension automatically.
- Automatic-type tensioner for serpentine belt drives
- Single pulley, 76 mm in diameter and 28.7 mm wide
- Six grooves on the pulley face, not a flat pulley
Quick facts
- Part: Dayco 89247 belt tensioner
- Also called: serpentine belt tensioner
- Fits: 1994-2004 Ford Mustang V6 3.8L, the 2004 Mustang V6 3.9L and other vehicles
- Condition: New
A worn tensioner can show up as belt squeal or chirp, a loose-looking or frayed belt, or a rattle near the front of the engine. Before you replace the tensioner, rule out a stretched belt and a worn bearing in one of the accessory pulleys, since either one can make similar noise.
Fits
This tensioner fits the 1994-2004 Ford Mustang V6 3.8L, the 2004 Ford Mustang V6 3.9L, the 1989-1997 Ford Thunderbird V6 3.8L and the 1989-1997 Mercury Cougar V6 3.8L. The 1994-2004 Ford Mustang V6 3.8L takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Number of pulleys: 1
- Pulley diameter: 76 mm
- Pulley width: 28.7 mm
- Pulley grooves: 6
Build and materials
- Type: automatic
- Belt type: serpentine
- Direction: clockwise
- Flat pulley: no
- Condition: new
Interchange: 419-208
38127 · 49003 · 49227 · 45873 · 5873 · 900027A · 999100A · 6601902
This part cross-references / interchanges with the following part numbers:
38127, 49003, 49227, 419-208, 45873, 5873, 900027A, 999100A, 6601902, E9SE-6B209-GA, E9SZ-6B209-D, F4SE-6B209-CA, F4SZ-6B209-B, XR3E-6B209-CB
Frequently Asked Questions
Does this Mustang belt tensioner fit the 2004 Ford Mustang V6 3.9L?
Yes. Dayco 89247 fits the 2004 Ford Mustang V6 3.9L as well as the 1994-2004 Ford Mustang V6 3.8L.
Is this Dayco tensioner right for the 1989-1997 Mercury Cougar V6 3.8L?
Yes. Dayco 89247 fits the 1989-1997 Mercury Cougar V6 3.8L and the 1989-1997 Ford Thunderbird V6 3.8L.
Is this Dayco belt tensioner automatic or manual?
This belt tensioner is an automatic type for a serpentine belt, with one six-groove pulley that is 76 mm in diameter and 28.7 mm wide.
How do I check a belt tensioner pulley for wear?
With the engine off and cool, look at the belt for cracks or fraying and at the tensioner pulley for rust, damage or rough grooves. A shop can test the tension while the engine runs.
Does Dayco 89247 replace the 419-208 tensioner?
Yes, 419-208 is one of the numbers Dayco 89247 replaces, and the other cross-reference numbers are on the Interchange line.
