Dayco 89203 Accessory Drive Belt Tensioner Assembly

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DaycoPart #: 89203

Dayco 89203 Accessory Drive Belt Tensioner Assembly

Name: Dayco 89203 Accessory Drive Belt Tensioner Assembly
Brand: Dayco
SKU: BCWL-89203
Price: 64.65 USD
Availability: InStock

172 vehicles fit this part

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Fitment: Buick, Chevrolet, Pontiac, Oldsmobile, and Cadillac, Century, Impala, Monte Carlo, Grand Prix, Lumina, Skylark, Venture, Achieva, Silhouette, Grand Am, Trans Sport, Cutlass Supreme, Regal, Beretta, Corsica, Lumina APV, Cutlass Ciera, Cavalier, Cutlass Cruiser, Sunbird, 6000, Tempest, Celebrity, Cimarron, and Firenza

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Not what you need? See all Accessory Drive Belt Tensioner Assembly options

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89203

The Dayco 89203 accessory drive belt tensioner assembly is designed for reliable serpentine belt tensioning in select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles. This automatic tensioner ensures consistent belt tension and smooth operation of accessory drive components.

Serpentine belt type compatible
Clockwise rotation direction
Single pulley design with 90 mm diameter
Pulley width of 30 mm with flat surface
Automatic tensioner type for maintenance-free operation

Technical Details and Specifications

The Dayco 89203 tensioner assembly features a single pulley with a 90 mm diameter and a 30 mm wide flat pulley surface, optimized for serpentine belt systems. Its clockwise rotation direction matches the accessory drive requirements of various GM models. The automatic tensioner design maintains proper belt tension without manual adjustment, reducing wear and improving belt life. This part is engineered to meet the specific demands of vehicles such as the Buick Century, Chevrolet Cavalier, Cadillac DeVille, Oldsmobile Cutlass Ciera, and Pontiac Grand Prix, among others.

Compatible Vehicles and Applications

This accessory drive belt tensioner assembly is compatible with a range of GM vehicles, including:

Buick Century, Regal, Skylark
Cadillac models including DeVille and Seville
Chevrolet Cavalier, Impala, Lumina, Monte Carlo
Oldsmobile Cutlass Ciera, Cutlass Supreme, Firenza
Pontiac Grand Am, Grand Prix, Sunbird, Tempest

Use this tensioner assembly to maintain proper serpentine belt tension and ensure smooth operation of alternators, power steering pumps, and air conditioning compressors in these vehicles.

Common Issues Addressed by Dayco 89203

Eliminates belt slippage caused by worn or loose tensioners
Prevents premature serpentine belt wear and cracking
Reduces noise from belt misalignment or improper tension
Improves accessory drive system reliability and performance
Addresses tensioner pulley bearing wear and failure

Installation Notes and Tips

Ensure the serpentine belt is routed correctly before installation
Use proper tools to release tension on the old tensioner safely
Verify the pulley rotates clockwise as specified
Inspect the serpentine belt for wear and replace if necessary
Follow vehicle-specific service manual instructions for torque specifications

Quality Assurance and Warranty

Dayco manufactures the 89203 accessory drive belt tensioner assembly to meet or exceed OEM specifications. The automatic tensioner design provides consistent performance and durability. While specific warranty terms may vary, Dayco typically offers coverage against defects in materials and workmanship to ensure long-term reliability in compatible Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles.

Brand	Dayco
Part Number	89203
Belt Type	Serpentine
Direction	Clock Wise
Number of Pulleys	1
Pulley 1 Diameter	90
Pulley 1 Flat	Y
Pulley 1 Width	30
Type	Automatic

This part fits 172 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Fuel Type	Position	Notes
2005	Buick	Century				N/A
2005	Chevrolet	Impala	3.4L	V6		N/A
2005	Chevrolet	Monte Carlo	3.4L	V6		N/A
2004	Buick	Century				N/A
2004	Chevrolet	Impala	3.4L	V6		N/A
2004	Chevrolet	Monte Carlo	3.4L	V6		N/A
2003	Buick	Century				N/A
2003	Chevrolet	Impala	3.4L	V6		N/A
2003	Chevrolet	Monte Carlo	3.4L	V6		N/A
2003	Pontiac	Grand Prix	3.1L	V6		N/A
2002	Buick	Century				N/A
2002	Chevrolet	Impala	3.4L	V6		N/A
2002	Chevrolet	Monte Carlo	3.4L	V6		N/A
2002	Pontiac	Grand Prix	3.1L	V6		N/A
2001	Buick	Century				N/A
2001	Chevrolet	Impala	3.4L	V6		N/A
2001	Chevrolet	Lumina				N/A
2001	Chevrolet	Monte Carlo	3.4L	V6		N/A
2001	Pontiac	Grand Prix	3.1L	V6		N/A
2000	Buick	Century				N/A
2000	Chevrolet	Impala	3.4L	V6		N/A
2000	Chevrolet	Lumina				N/A
2000	Chevrolet	Monte Carlo	3.4L	V6		N/A
2000	Pontiac	Grand Prix	3.1L	V6		N/A
1999	Buick	Century				N/A
1999	Chevrolet	Lumina	3.1L	V6		N/A
1999	Chevrolet	Monte Carlo	3.1L	V6		N/A
1999	Pontiac	Grand Prix	3.1L	V6		N/A
1998	Buick	Century				N/A
1998	Buick	Skylark	3.1L	V6		N/A
1998	Chevrolet	Lumina	3.1L	V6		N/A
1998	Chevrolet	Monte Carlo	3.1L	V6		N/A
1998	Oldsmobile	Achieva	3.1L	V6		N/A
1998	Oldsmobile	Silhouette				N/A
1998	Pontiac	Grand Am	3.1L	V6		N/A
1998	Pontiac	Grand Prix	3.1L	V6		N/A
1998	Pontiac	Trans Sport				N/A
1997	Buick	Century				N/A
1997	Buick	Skylark	3.1L	V6		N/A
1997	Chevrolet	Lumina	3.1L	V6		N/A
1997	Chevrolet	Monte Carlo	3.1L	V6		N/A
1997	Oldsmobile	Achieva	3.1L	V6		N/A
1997	Oldsmobile	Cutlass Supreme				N/A
1997	Oldsmobile	Silhouette				N/A
1997	Pontiac	Grand Am	3.1L	V6		N/A
1997	Pontiac	Grand Prix	3.1L	V6		N/A
1997	Pontiac	Trans Sport				N/A
1996	Buick	Century	3.1L	V6		N/A
1996	Buick	Regal	3.1L	V6		N/A
1996	Buick	Skylark	3.1L	V6		N/A
1996	Chevrolet	Corsica	3.1L	V6		N/A
1996	Chevrolet	Lumina	3.1L	V6		N/A
1996	Chevrolet	Lumina APV				N/A
1996	Chevrolet	Monte Carlo	3.1L	V6		N/A
1996	Oldsmobile	Achieva	3.1L	V6		N/A
1996	Oldsmobile	Cutlass Ciera	3.1L	V6		N/A
1996	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1996	Oldsmobile	Silhouette				N/A
1996	Pontiac	Grand Am	3.1L	V6		N/A
1996	Pontiac	Grand Prix	3.1L	V6		N/A
1996	Pontiac	Trans Sport				N/A
1995	Buick	Century	3.1L	V6		N/A
1995	Buick	Regal	3.1L	V6		N/A
1995	Buick	Skylark	3.1L	V6		N/A
1995	Chevrolet	Corsica	3.1L	V6		N/A
1995	Chevrolet	Lumina	3.1L	V6		N/A
1995	Chevrolet	Lumina APV	3.1L	V6		N/A
1995	Chevrolet	Monte Carlo	3.1L	V6		N/A
1995	Oldsmobile	Achieva	3.1L	V6		N/A
1995	Oldsmobile	Cutlass Ciera	3.1L	V6		N/A
1995	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1995	Pontiac	Grand Am	3.1L	V6		N/A
1995	Pontiac	Grand Prix	3.1L	V6		N/A
1995	Pontiac	Trans Sport	3.1L	V6		N/A
1994	Buick	Century	3.1L	V6		N/A
1994	Buick	Regal	3.1L	V6		N/A
1994	Buick	Skylark	3.1L	V6		N/A
1994	Chevrolet	Cavalier	3.1L	V6		N/A
1994	Chevrolet	Corsica	3.1L	V6		N/A
1994	Chevrolet	Lumina	3.1L	V6		N/A
1994	Chevrolet	Lumina APV	3.1L	V6		N/A
1994	Oldsmobile	Achieva	3.1L	V6		N/A
1994	Oldsmobile	Cutlass Ciera	3.1L	V6		N/A
1994	Oldsmobile	Cutlass Cruiser				N/A
1994	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1994	Oldsmobile	Silhouette	3.1L	V6		N/A
1994	Pontiac	Grand Am	3.1L	V6		N/A
1994	Pontiac	Grand Prix	3.1L	V6		N/A
1994	Pontiac	Sunbird	3.1L	V6		N/A
1994	Pontiac	Trans Sport	3.1L	V6		N/A
1993	Buick	Regal	3.1L	V6		N/A
1993	Chevrolet	Cavalier	3.1L	V6		N/A
1993	Chevrolet	Corsica	3.1L	V6		N/A
1993	Chevrolet	Lumina	3.1L	V6	GAS	N/A	w/o A.P.
1993	Chevrolet	Lumina	3.1L	V6	FLEX	N/A
1993	Chevrolet	Lumina APV	3.1L	V6		N/A
1993	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1993	Oldsmobile	Silhouette	3.1L	V6		N/A
1993	Pontiac	Grand Prix	3.1L	V6		N/A
1993	Pontiac	Sunbird	3.1L	V6		N/A
1993	Pontiac	Trans Sport	3.1L	V6		N/A
1992	Buick	Regal	3.1L	V6		N/A
1992	Chevrolet	Cavalier	3.1L	V6		N/A
1992	Chevrolet	Corsica	3.1L	V6		N/A
1992	Chevrolet	Lumina	3.1L	V6		N/A
1992	Chevrolet	Lumina APV	3.1L	V6		N/A
1992	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1992	Oldsmobile	Silhouette	3.1L	V6		N/A
1992	Pontiac	Grand Prix	3.1L	V6		N/A
1992	Pontiac	Sunbird	3.1L	V6		N/A
1992	Pontiac	Trans Sport	3.1L	V6		N/A
1991	Buick	Regal	3.1L	V6		N/A
1991	Chevrolet	Cavalier	3.1L	V6		N/A
1991	Chevrolet	Corsica	3.1L	V6		N/A
1991	Chevrolet	Lumina	3.1L	V6		N/A
1991	Chevrolet	Lumina APV				N/A
1991	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1991	Oldsmobile	Silhouette				N/A
1991	Pontiac	6000	3.1L	V6		N/A
1991	Pontiac	Grand Prix	3.1L	V6		N/A
1991	Pontiac	Sunbird	3.1L	V6		N/A
1991	Pontiac	Tempest	3.1L	V6		N/A
1991	Pontiac	Trans Sport				N/A
1990	Buick	Regal	3.1L	V6		N/A
1990	Chevrolet	Cavalier	3.1L	V6		N/A
1990	Chevrolet	Celebrity	3.1L	V6		N/A
1990	Chevrolet	Corsica	3.1L	V6		N/A
1990	Chevrolet	Lumina	3.1L	V6		N/A
1990	Chevrolet	Lumina APV				N/A
1990	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1990	Oldsmobile	Silhouette				N/A
1990	Pontiac	6000	3.1L	V6		N/A
1990	Pontiac	Grand Prix	3.1L	V6		N/A
1990	Pontiac	Tempest	3.1L	V6		N/A
1990	Pontiac	Trans Sport				N/A
1989	Buick	Century	2.8L	V6		N/A
1989	Buick	Regal	3.1L	V6		N/A
1989	Buick	Regal	2.8L	V6		N/A
1989	Chevrolet	Cavalier	2.8L	V6		N/A
1989	Chevrolet	Celebrity	2.8L	V6		N/A
1989	Chevrolet	Corsica	2.8L	V6		N/A
1989	Oldsmobile	Cutlass Ciera	2.8L	V6		N/A
1989	Oldsmobile	Cutlass Cruiser	2.8L	V6		N/A
1989	Oldsmobile	Cutlass Supreme	3.1L	V6		N/A
1989	Oldsmobile	Cutlass Supreme	2.8L	V6		N/A
1989	Pontiac	6000	3.1L	V6		N/A
1989	Pontiac	6000	2.8L	V6		N/A
1989	Pontiac	Grand Prix	3.1L	V6		N/A
1989	Pontiac	Grand Prix	2.8L	V6		N/A
1989	Pontiac	Tempest	2.8L	V6		N/A
1988	Buick	Century	2.8L	V6		N/A
1988	Buick	Regal				N/A
1988	Cadillac	Cimarron				N/A
1988	Chevrolet	Cavalier	2.8L	V6		N/A
1988	Chevrolet	Celebrity	2.8L	V6		N/A
1988	Chevrolet	Corsica	2.8L	V6		N/A
1988	Oldsmobile	Cutlass Ciera	2.8L	V6		N/A
1988	Oldsmobile	Cutlass Cruiser	2.8L	V6		N/A
1988	Oldsmobile	Cutlass Supreme	2.8L	V6		N/A
1988	Pontiac	6000	3.1L	V6		N/A
1988	Pontiac	6000	2.8L	V6		N/A
1988	Pontiac	Grand Prix				N/A
1987	Buick	Century	2.8L	V6		N/A
1987	Cadillac	Cimarron				N/A
1987	Chevrolet	Cavalier	2.8L	V6		N/A
1987	Chevrolet	Celebrity	2.8L	V6		N/A
1987	Chevrolet	Corsica	2.8L	V6		N/A
1987	Oldsmobile	Cutlass Ciera	2.8L	V6		N/A
1987	Oldsmobile	Cutlass Cruiser	2.8L	V6		N/A
1987	Oldsmobile	Firenza	2.8L	V6		N/A
1987	Pontiac	6000	2.8L	V6		N/A
1987	Pontiac	Tempest	2.8L	V6		N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

38105

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.