What is the role of the serpentine drivebelt in the engine and its components on Ford Thunderbird?

A single serpentine drivebelt, located at the front of the engine, plays a crucial role in the operation of the engine and its components. It drives the alternator, power steering pump, water pump, and air conditioning compressor (if equipped). Due to its function and material, the belt is prone to wear and requires periodic inspection. With the engine off, open the hood and use your fingers (and a flashlight if necessary) to check for cracks, separation of the belt plies, fraying, and glazing, which gives the belt a shiny appearance. Both sides of the belt should be inspected, which means you will have to twist the belt to check the underside. The ribs on the underside of the belt should all be the same depth, with none of the surface uneven. The tension of the belt is checked visually. Locate the belt tensioner at the front of the engine on the right (passenger) side, adjacent to the lower crankshaft pulley, then find the tensioner operating marks. If the indicator mark is outside the operating range, the belt should be replaced. To replace the belt, lift the tensioner at the bolt. The tensioner will swing down once the tension of the belt is released. Remove the belt from the auxiliary components and carefully release the tensioner. Route the new belt over the various pulleys, again rotating the tensioner to allow the belt to be installed, then release the belt tensioner. Ensure the belt fits properly into the pulley grooves - it must be completely engaged. Most models have a drivebelt routing decal on the upper radiator panel to help during drivebelt installation.

Genuine Ford Thunderbird Drive Belt

Serpentine Belt

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Ford Thunderbird V-Belt
Part Number: 2W9Z-8620-GB
$27.45 MSRP: $54.55
You Save: $27.10 (50%)
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Product Specifications
- Other Name: Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Ford Thunderbird | 8 Cyl 3.9L DOHC EFI NA | 5-Speed Automatic Transmission 5R55S, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Thunderbird ATMTV BELT
Part Number: E4DZ8620D
$13.22 MSRP: $18.07
You Save: $4.85 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1985-1987 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT A4LD, 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: E5LY-8620-A
$7.93 MSRP: $11.02
You Save: $3.09 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1986-1987 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT A4LD, 4AT AOD, 5MT
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Ford Thunderbird V Belt
Part Number: F4SZ8620D
$14.42 MSRP: $20.04
You Save: $5.62 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: V-Belt; Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1995 Ford Thunderbird | 6 Cyl 3.8L | 4AT 4R70W, 5MT
- 1989 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: D9PZ-8620-F
$4.88 MSRP: $6.78
You Save: $1.90 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
- 1985-1986 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: E1ZZ-8620-B
$0.00
Product Specifications
- Other Name: A.I.R. Belt, Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1992 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
- 1988 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 4AT A4LD, 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: D9PZ-8620-G
Product Specifications
- Replaces: E8TZ-8620-N, F8TZ-8620-HA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: E6AZ-8620-A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: E6AZ-8620-B
Product Specifications
- Other Name: A.I.R. Belt, Alternator, Alternator Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V Belt
Part Number: F5SZ8620DA
Product Specifications
- Other Name: V-Belt; Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995 Ford Thunderbird | 6 Cyl 3.8L | 4AT 4R70W, 5MT
- 1989 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V-Belt
Part Number: C9PZ-8620-GN
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1981 Ford Thunderbird | 6 Cyl 3.3L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 4AT AOD
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Ford Thunderbird ATMTV BELT
Part Number: D8PZ8620P
Product Specifications
- Other Name: A.I.R. Pump Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V Belt
Part Number: E1AZ8620A
Product Specifications
- Other Name: V-Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird BELT DRIVE
Part Number: E1FZ8620K
Product Specifications
- Other Name: Belt, Power Steering, Power Steering Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
View related parts
Ford Thunderbird ATMTV BELT
Part Number: E1SZ8620A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1985 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD, 5MT
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Ford Thunderbird V Belt
Part Number: E2SZ8620A
Product Specifications
- Other Name: V-Belt; Alternator Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1982-1986 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT AOD, 5MT
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Ford Thunderbird V-BELT
Part Number: E3ZZ8620A
Product Specifications
- Other Name: Belt, Serpentine Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
- 1984-1986 Ford Thunderbird | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT AOD, 5MT
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Ford Thunderbird V-BELT
Part Number: E43Z8620G
Product Specifications
- Other Name: Belt, Idler Pulley
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
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Ford Thunderbird V-BELT
Part Number: E4TZ8620F
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1993 Ford Thunderbird | 6 Cyl 3.8L | 4AT AOD, 5MT
View related parts
Ford Thunderbird V Belt
Part Number: E6PZ8620B
Product Specifications
- Other Name: V-Belt; A.I.R. Pump Belt, Belt
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1982 Ford Thunderbird | 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT AOD

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Ford Thunderbird Drive Belt Parts Questions & Experts Answers

V-Belt
E6AZ-8620-B
Q: What is the role of the serpentine drivebelt in the engine and its components on Ford Thunderbird?
A: A single serpentine drivebelt, located at the front of the engine, plays a crucial role in the operation of the engine and its components. It drives the alternator, power steering pump, water pump, and air conditioning compressor (if equipped). Due to its function and material, the belt is prone to wear and requires periodic inspection. With the engine off, open the hood and use your fingers (and a flashlight if necessary) to check for cracks, separation of the belt plies, fraying, and glazing, which gives the belt a shiny appearance. Both sides of the belt should be inspected, which means you will have to twist the belt to check the underside. The ribs on the underside of the belt should all be the same depth, with none of the surface uneven. The tension of the belt is checked visually. Locate the belt tensioner at the front of the engine on the right (passenger) side, adjacent to the lower crankshaft pulley, then find the tensioner operating marks. If the indicator mark is outside the operating range, the belt should be replaced. To replace the belt, lift the tensioner at the bolt. The tensioner will swing down once the tension of the belt is released. Remove the belt from the auxiliary components and carefully release the tensioner. Route the new belt over the various pulleys, again rotating the tensioner to allow the belt to be installed, then release the belt tensioner. Ensure the belt fits properly into the pulley grooves - it must be completely engaged. Most models have a drivebelt routing decal on the upper radiator panel to help during drivebelt installation.