OE Quality
60-Day Returns

ATP Parts 102066 Engine Harmonic Balancer
Overview of ATP Parts OE Replacement Balancer 102066
The ATP Parts OE Replacement Balancer 102066 is designed to restore proper engine harmonic balance for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. This engine harmonic balancer is engineered to meet standard replacement specifications, ensuring reliable performance for models such as the Malibu, Grand Prix, and Cavalier.
- Inside diameter options: 1.3125 inches (33 mm)
- Outside diameter options: 6.4375 inches (163 mm)
- Three pulley grooves for serpentine drive belts
- Three mounting holes for secure installation
- Depth measurements: 1.625 inches (41 mm)
- Standard replacement grade type
- Compatible with serpentine belt drive systems
Detailed Product Description
The ATP Parts OE Replacement Balancer 102066 is an engine harmonic balancer designed to reduce torsional vibration in the crankshaft, helping to protect engine components and maintain smooth operation. Featuring a 1.3125 inch (33 mm) inside diameter and a 6.4375 inch (163 mm) outside diameter, this balancer fits a range of GM vehicles including Buick Achieva, Chevrolet Malibu, Oldsmobile Cutlass Supreme, and Pontiac Grand Am. It includes three pulley grooves to accommodate serpentine drive belts and three mounting holes for proper alignment and secure attachment. The depth of 1.625 inches (41 mm) ensures compatibility with the engine block components it is designed to replace.
This balancer is part of the ATP Parts OE Replacement Balancer product line, which focuses on providing standard replacement components that meet original equipment specifications. This line is intended for customers seeking reliable, direct-fit parts that maintain factory performance without modification.
Common Applications and Issues Addressed
- Eliminates crankshaft vibration that can cause premature wear
- Prevents damage to timing components and accessories
- Restores proper belt alignment and tension for serpentine systems
- Reduces engine noise and harshness related to harmonic imbalance
- Replaces worn or damaged harmonic balancers in Buick, Chevrolet, Oldsmobile, and Pontiac models
Installation Notes and Tips
- Verify the inside and outside diameter measurements to ensure correct fitment
- Confirm compatibility with serpentine belt drive systems on your vehicle
- Use proper tools to align the balancer with the crankshaft and mounting holes
- Torque mounting bolts to manufacturer specifications (hardware not included)
- Inspect related components such as belts and pulleys during installation
Quality Assurance and Warranty
The ATP Parts OE Replacement Balancer 102066 is manufactured to meet standard replacement grade requirements, ensuring consistent performance and durability. While installation hardware is not included, the part is designed for direct replacement in compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Warranty coverage details should be confirmed with the original ATP Parts documentation or distributor.
| Brand | ATP Parts |
| Part Number | 102066 |
| Position | OE Replacement Balancer |
| Inside Diameter | 1.3125 |
| Inside Diameter | 33 |
| Outside Diameter | 163 |
| Outside Diameter | 6.4375 |
| Pulley Groove Quantity | 3 |
| Grade Type | Standard replacement |
| Mounting Hole Quantity | 3 |
| Drive Belt Type | Serpentine |
| Bolt And Washer Included | No |
| Depth | 1.625 |
| Depth | 41 |
| LineCode | Atp2 |
This part fits 63 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2002 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2001 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2001 | Oldsmobile | Alero | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2001 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2001 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2000 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2000 | Oldsmobile | Alero | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2000 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 2000 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1999 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1999 | Chevrolet | Malibu | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1999 | Oldsmobile | Alero | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1999 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1999 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Buick | Skylark | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Chevrolet | Malibu | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Oldsmobile | Achieva | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1998 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Buick | Skylark | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Chevrolet | Malibu | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Oldsmobile | Achieva | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1997 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1996 | Buick | Skylark | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1996 | Chevrolet | Cavalier | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1996 | Oldsmobile | Achieva | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1996 | Pontiac | Grand Am | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1996 | Pontiac | Sunfire | 2.4L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1995 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1995 | Chevrolet | Cavalier | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1995 | Oldsmobile | Achieva | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1995 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1995 | Pontiac | Sunfire | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1994 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1994 | Oldsmobile | Achieva | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1994 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1993 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1993 | Oldsmobile | Achieva | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1993 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1992 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1992 | Oldsmobile | Achieva | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1992 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1991 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1991 | Oldsmobile | Cutlass Calais | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1991 | Oldsmobile | Cutlass Supreme | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1991 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1991 | Pontiac | Grand Prix | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1990 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1990 | Oldsmobile | Cutlass Calais | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1990 | Oldsmobile | Cutlass Supreme | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1990 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1990 | Pontiac | Grand Prix | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1989 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1989 | Oldsmobile | Cutlass Calais | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1989 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1988 | Buick | Skylark | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1988 | Oldsmobile | Cutlass Calais | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1988 | Pontiac | Grand Am | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
| 1987 | Oldsmobile | Calais | 2.3L | L4 | N/A | Part Type: Serpentine; Outer Diameter: 6.44 in; OE Replacement Balancer |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.