Tensioner 12557838 For HOLDEN
The DUHUI Bearing 12557838 drive belt tensioner is an OE-replacement component for Holden Commodore and other GM vehicles equipped with the 3.8L V6 engine (Ecotec L36). This tensioner maintains proper serpentine belt tension across the accessory drive system, preventing belt slip and reducing wear on engine components. Manufactured to match original equipment specifications including 12557838, 12562347, and 3540047, this tensioner delivers reliable performance for compatible Holden vehicles.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 12557838 |
| Product Type | Belt Tensioner |
| Outside Diameter | 76.00 mm (2.992 inch) |
| Width | 31.00 mm (1.220 inch) |
| Bearing Bore Inside Diameter | 17.00 mm (0.669 inch) |
| Belt Type | Serpentine |
Important: All information on this page is for reference only. Please verify OE numbers, dimensions, and vehicle fitment against your original part before ordering. Contact us for fitment confirmation.
DH Code & OE Numbers & Reference Numbers
DH Code:
OE Numbers:
12557838, 12562347, 3540047
Reference Numbers (Interchange):
Dayco: 89382
NAPA: 38153
ACDelco: 12557838
Vehicle Fitment
HOLDEN CALAIS (VY): 3.8 i V6 2002-2004
Additional compatible models (verify before ordering):
HOLDEN: Commodore (VT, VX, VY, VZ) 3.8L V6, Berlina (VX, VY) 3.8L V6, Statesman (WH) 3.8L V6, Caprice (WH) 3.8L V6
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- OE-replacement belt tensioner for Holden 3.8L Ecotec V6 applications. Matches OEM specifications including 12557838 and 12562347.
- 76 mm outside diameter and 31 mm width provide exact fitment for the serpentine belt drive system.
- 17 mm bearing bore matches original equipment specifications.
- Spring-loaded automatic tensioning mechanism maintains optimal belt tension as the belt stretches over time.
- Durable construction ensures consistent belt tension across the engine operating range.
Installation Notes
- Verify the 76 mm outside diameter and 31 mm width match your original tensioner before installation.
- Inspect the serpentine belt for wear or damage before installing the new tensioner.
- Torque the mounting bolt to manufacturer specifications (refer to service manual).
- After installation, verify proper belt tension and check for smooth pulley rotation.
- This tensioner is designed for the Holden 3.8L Ecotec engine – confirm belt routing matches your vehicle’s specific configuration.
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces tensioners and automotive bearings to OE specifications. Contact us
