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Dorman 594-478 Engine Harmonic Balancer Pulley
| Brand | Dorman 594-478 |
|---|---|
| Inside Diameter | 1.06 |
| Outside Diameter | 6.358 |
| Pulley Groove Quantity | 6 |
| Mounting Hardware Included | No |
| Grade Type | Regular |
| Mounting Hole Quantity | 3 |
| Belt Type | Serpentine |
| Keyway Notch | No |
| Depth | 1.23 |
| Mounting Hole Diameter | 0.43 |
| Center Bolt Included | No |
| Package Contents | Balancer |
| Fits | Chevrolet, GMC, and Isuzu · 25 vehicles |
OE-style fit and function. Matches the original pulley for straightforward replacement.
Quality materials. Built for reliable performance and durability.
Serpentine belt design. Works with a 6-groove pulley setup.
Cross-references Schaeffler 102194, 10141920 and P-GM2.2 for the same application. See all 4.
Dorman 594-478 Harmonic Balancer Pulley
This Dorman engine harmonic balancer pulley is built to match the original pulley’s fit and function on specified applications. It is a direct replacement for Chevrolet S10, GMC Sonoma, and Isuzu Hombre models, with dimensions and belt layout that align with the factory serpentine drive system.
- Engine harmonic balancer pulley for specified GM and Isuzu applications
- 6-groove pulley for serpentine belt routing
- Inside diameter: 1.06 in.
- Outside diameter: 6.358 in.
- Depth: 1.23 in.
- 3 mounting holes with 0.43 in. mounting hole diameter
- No keyway notch
- Regular grade construction
- Package contents: balancer
Fitment and Application Details
Compatible with 1994-2003 Chevrolet S10, 1994-2003 GMC Sonoma, and 1996-2000 Isuzu Hombre. This part number, Dorman 594-478, is a fitment-based replacement for vehicles using a 6-rib serpentine belt setup and the listed pulley dimensions.
This part cross-references Schaeffler 102194 for the same application.
What This Part Helps Address
- Worn or damaged harmonic balancer pulley surfaces
- Belt tracking issues caused by pulley wear
- Serpentine belt noise related to pulley condition
- Improper pulley alignment from a failed original component
- Replacement needs on Chevrolet S10, GMC Sonoma, and Isuzu Hombre engine assemblies
Installation Notes and Tips
Verify pulley diameter, groove count, mounting hole pattern, and belt type before installation. Confirm the application uses a serpentine belt and matches the listed inside diameter, outside diameter, and depth. Inspect the surrounding belt drive components during service, and transfer only the components required by the vehicle design.
Quality Assurance
Dorman engineers this harmonic balancer pulley to match original fit and function on specified vehicles. It is manufactured from quality materials for reliable performance and durability in regular-duty service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2003 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 2003 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 2002 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 2002 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 2001 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 2001 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 2000 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 2000 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 2000 | Isuzu | Hombre | 2.2L | L4 | N/A | — |
| 1999 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1999 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 1999 | Isuzu | Hombre | 2.2L | L4 | N/A | — |
| 1998 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1998 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 1998 | Isuzu | Hombre | 2.2L | L4 | N/A | — |
| 1997 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1997 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 1997 | Isuzu | Hombre | 2.2L | L4 | N/A | — |
| 1996 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1996 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 1996 | Isuzu | Hombre | 2.2L | L4 | N/A | — |
| 1995 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1995 | GMC | Sonoma | 2.2L | L4 | N/A | — |
| 1994 | Chevrolet | S10 | 2.2L | L4 | N/A | — |
| 1994 | GMC | Sonoma | 2.2L | L4 | N/A | — |
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