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Gates 37012P Alternator Decoupler Pulley
| Brand | Gates 37012P |
|---|---|
| Material | Steel |
| Groove Quantity | 6 |
| Installation Tools Requirements | 91024-1 |
| Flanged | Yes |
| Width | 42.5 |
| Outside Diameter | 55.5 |
| Bore Diameter | 14.5 |
| Contact Surface | V-ribbed grooved |
| Contents | Pulley, dust cap |
| Description | One-way clutch decoupler pulley |
| OE Comparison Rating | Oe exact |
| Required Tool Part Number | 91024-1 |
| Product line | Decoupler Pulley |
| Fits | Volkswagen · 4 vehicles |
OE exact replacement. Matches the original design for straightforward installation.
Steel construction. Built for durable performance in the accessory belt drive system.
Decoupler pulley. Lets the alternator overrun to reduce vibration and smooth operation.
Cross-references Dorman - OE Solutions 300-874, Gates 37012P and Litens 930002A for the same application. See all 8.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Gates 37012P Alternator Decoupler Pulley
The Gates 37012P is a steel alternator decoupler pulley built for accessory drive systems that need smoother alternator operation during engine deceleration. It uses a one-way clutch design to let the alternator free-wheel when engine speed drops, helping reduce belt vibration and wear.
Key Features
- Alternator decoupler pulley with one-way clutch function
- Steel construction for durability in the belt drive system
- 6-groove V-ribbed grooved contact surface
- Flanged design for secure fitment
- OE Exact comparison rating for direct replacement needs
- Includes pulley and dust cap
- Requires tool 91024-1 for installation
Product Details
Gates DriveAlign decoupler pulleys are engineered to isolate vibration in the accessory belt drive and allow the alternator to overrun during deceleration. That function helps maintain smoother engine performance and can reduce stress on the belt, tensioner, and related charging system components. This Gates 37012P alternator decoupler pulley is a direct-fit service part for select Volkswagen Beetle applications and is listed for 1998-2001 Volkswagen Beetle models with alternate OEM part number 038903023 (G, H or J).
This part cross-references Dorman OE Solutions 300-874 for the same application.
What It Helps Address
- Belt vibration in the accessory drive system
- Alternator overrun noise during engine deceleration
- Premature wear on the serpentine belt
- Stress on the belt tensioner and related components
- Charging system driveline harshness in Volkswagen Beetle applications
Installation Notes
Fits 1998-2001 Volkswagen Beetle, N/A. Installation tool 91024-1 is required. Verify the alternator pulley style and OEM reference before installation, and confirm the 6-groove, 14.5 mm bore, 55.5 mm outside diameter, and 42.5 mm width match the original part.
Quality Assurance
Gates DriveAlign decoupler pulleys are part of a product line focused on vibration isolation and accessory drive durability. The 37012P is specified as an OE Exact replacement for the listed application.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|
| 2001 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | Alt. OEM Part No. 038903023(G, H or J); Installation Tool Required; Decoupler Pulley |
| 2000 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | Alt. OEM Part No. 038903023(G, H or J); Installation Tool Required; Decoupler Pulley |
| 1999 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | Alt. OEM Part No. 038903023(G, H or J); Installation Tool Required; Decoupler Pulley |
| 1998 | Volkswagen | Beetle | 1.9L | L4 | DIESEL | Alt. OEM Part No. 038903023(G, H or J); Installation Tool Required; Decoupler Pulley |
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