Automatic Serpentine Belt Tensioner Assembly

Quality Guaranteed • Aftermarket Value • Backed by Warranty • 30 Day Return Policy

Dorman# 419-208

Replaces Ford Motor Company# E9SZ 6B209 D, F4SZ 6B209 B

Fits the Following Applications:

2004 FORD MUSTANG V6 - 3.9L (238 CID): GAS: FI: N: 6
2004 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
2003 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
2002 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
2001 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
2000 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1999 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1998 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1997 MERCURY COUGAR: XR-7 V6 - 3.8L (232 CID): GAS: FI: N: 4
1997 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1997 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1996 MERCURY COUGAR: XR-7 V6 - 3.8L (232 CID): GAS: FI: N: 4
1996 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1996 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1995 MERCURY COUGAR: XR-7 V6 - 3.8L (232 CID): GAS: FI: N: 4
1995 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1995 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1994 MERCURY COUGAR: XR-7 V6 - 3.8L (232 CID): GAS: FI: N: 4
1994 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1994 FORD MUSTANG V6 - 3.8L (232 CID): GAS: FI: N: 4
1993 MERCURY COUGAR: XR-7 V6 - 3.8L (232 CID): GAS: FI: N: 4
1993 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1992 MERCURY COUGAR: LS V6 - 3.8L (232 CID): GAS: FI: N: 4
1992 FORD THUNDERBIRD V6 - 3.8L (232 CID): GAS: FI: N: 4
1992 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1991 MERCURY COUGAR: LS V6 - 3.8L (232 CID): GAS: FI: N: 4
1991 FORD THUNDERBIRD V6 - 3.8L (232 CID): GAS: FI: N: 4
1991 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1990 MERCURY COUGAR: LS V6 - 3.8L (232 CID): GAS: FI: N: 4
1990 FORD THUNDERBIRD V6 - 3.8L (232 CID): GAS: FI: N: 4
1990 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4
1989 MERCURY COUGAR: LS V6 - 3.8L (232 CID): GAS: FI: N: 4; 6 Groove Pulley
1989 FORD THUNDERBIRD V6 - 3.8L (232 CID): GAS: FI: N: 4; 6 Groove Pulley
1989 FORD THUNDERBIRD: LX V6 - 3.8L (232 CID): GAS: FI: N: 4; 6 Groove Pulley

Maximum Belt Width: 20
Number of Pulley Bearings: 1
Number Of Pulleys: 1
Pulley Bearing Diameter (mm) (1): 40
Pulley Bearing Inside Diameter (1) (mm): 17
Pulley Diameter (mm) (1): 82.5
Pulley Groove Quantity: 6
Pulley Material (1): PA 66 GF30 (30% Glass Fill)
Pulley Width (mm) (1): 28.5
Pulley/Belt Type: Serpentine
Tensioner Rotation: Counter Clockwise
Notes: Serpentine

Dorman Belt Tensioner Assembly

Rigorously tested for a sustained, secure performance by a team of product and quality engineers, Dorman's Automatic Belt Tensioner Assembly is designed to provide proper tension to a vehicle's serpentine belt. It incorporates a damping design, torsion spring, and sealing system to ensure the proper functioning of many integral engine components. The Automatic Belt Tensioner Assembly is recommended for replacement when replacing the serpentine belt.

  • Quality tests on this part include torque testing, spring-back testing, corrosion-resistance testing, and on-vehicle testing
  • Solid steel or aluminum construction for long-lasting durability
  • Highly resistant to heat and shock
  • Designed to fit properly every time
Search Keywords: Belt, Tensioner, Assembly, Belts, Tensioners, Assemblies
Alternate Names: Accessory Belt Tensioner, Automatic Belt Tensioner, Drive Belt Tensioner, Serpentine Belt Tensioner

Information for Buyers

Placement reference diagram
FAQ & Common Terms
  • Left & Right is the orientation when sitting in the car. Left indicates Driver's side, Right Passenger's side.
  • New Take-Off (NTO) means a quality, low-cost OEM part in like-new condition. See More »
  • New Old Stock (NOS) means a fully-functioning, still-new item which may be dusty from storage. See More »
Shipping Details
  • International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
  • Shipping directions left in Paypal Notes will NOT be considered. Please contact us directly if you have a special request. Please note that we cannot accomodate requests such as "Leave on Porch"; such directions are better directed to your local delivery person.
  • Free Shipping, when advertised, is only for destinations within the contiguous US. All other destinations must pay additional fees.
  • Shipping Method may be changed or upgraded by request, but may involve an upcharge. We reserve the right to change to a method of comparable speed without notice. See More »
  • Handling Time may be longer than advertised for special-order items and items bound for international and non-contiguous destinations.
  • Backorders may occur. We can confirm stock any time on request. In the event of a backorder, we will contact you promptly.
Troubleshooting Problems
  • Payment Delays Unpaid item grievances are initiated within 14 days when payment has not been made. Payment may still be made after grievance is initiated, and will cancel the grievance.
  • Adjustments or Cancellations can be made without penalty as long as item has not yet shipped; just contact us!
  • Item Arrives Damaged Please preserve the package and contact us as soon as possible with a photo of the damage. See More »
  • Lost Package If you suspect your package is lost, contact us so we can investigate or send a replacement.
Quality Assurance, Returns & Warranty
  • Returns & Exchanges Accepted for any reason within 30 days for unused & unaltered products. Fees may apply.
  • To Initate a Return or Exchange, contact us BEFORE shipping & please read our full return policy: See More »
  • This Item has a Warranty: Covered by Dorman's Limited Lifetime Warranty. Initiate a Claim »
  • Disclaimer: We do not reimburse any installment or mechanic fees; returns and warranties cover only the value of the part itself, no associated labor.
Customer Service
  • Hours Live customer service is available Monday through Friday from 9am to 5pm EST, excluding US National Holidays.
  • Email should be directed through eBay's "Ask a Question" link. Responses within one business day.
  • Phone calls should be directed to 888-533-9119 (Toll Free).
RNB-419-208