Keep the accessory drive belt properly tensioned and every belt-driven component spinning with the Dorman TECHoice Automatic Belt Tensioner 419-200. It drops in as a direct-fit replacement built to reproduce the factory tensioner's mounting and fit on the listed applications: the 1993-2000 Ford Explorer, 1994-1999 Ford Ranger, 1994 Mazda Navajo, 1995-2000 Mazda B4000, 1996-1997 Ford Aerostar, and 1998-2000 Mercury Mountaineer — all with the V6-4.0L engine.
This spring-loaded automatic tensioner applies constant force to the serpentine belt, taking up slack and helping maintain proper belt tension as the belt wears. If a worn or failing tensioner is the cause of belt squeal or slippage, this assembly replaces it. Its polyamide pulley rotates clockwise (CW), carries six grooves for the serpentine belt, and rides on a single pulley bearing.
Specs: 73 mm outside diameter, 17 mm inside diameter, 28 mm width, 20 mm maximum belt width, 40 mm pulley bearing diameter, 6-groove polyamide pulley, single pulley bearing, clockwise rotation. Tensioner only. Country of origin: China.
Interchange: 5898 · 49202 · 89230 · F77Z6B209AA · 45898 · 38102 · ZZM515980 · ZZM815980 · BT46 · SK89230 · Manufacturer part number 419-200
This part cross-references / interchanges with the following part numbers:
What does the Dorman 419-200 automatic belt tensioner do?
It applies spring-loaded force to the accessory drive belt to maintain proper tension and take up slack as the belt wears, keeping the belt-driven accessories turning.
Which vehicles does this tensioner fit?
It's a direct-fit replacement for the V6-4.0L 1993-2000 Ford Explorer, 1994-1999 Ford Ranger, 1994 Mazda Navajo, 1995-2000 Mazda B4000, 1996-1997 Ford Aerostar, and 1998-2000 Mercury Mountaineer.
What are the signs this tensioner may need replacing?
Belt squeal or chirp, a belt that slips or flutters, and a visibly worn or seized pulley can be signs. Diagnose the cause first, since these symptoms can have other sources.
Does it include the belt or pulley?
This is the tensioner assembly only, supplied with its pulley; it does not include a belt. Reuse or replace the accessory belt as directed by the service procedure.
What is the pulley made of and how does it rotate?
The polyamide pulley rotates clockwise (CW) and rides on a single pulley bearing. It has six grooves for the serpentine belt and a 40 mm pulley bearing diameter.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
