Tensioner 12603527 For Buick
The DUHUI Bearing 12603527 drive belt tensioner is an OE-replacement component for Buick GL8 and other GM vehicles equipped with 3.0L and 3.6L V6 engines. 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 12603527 and 12577764, this tensioner delivers reliable performance for compatible SAIC-GM vehicles.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 12603527 |
| Product Type | Belt Tensioner |
| Outside Diameter | 73.00 mm (2.874 inch) |
| Width | 26.50 mm (1.043 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:
12603527, 12577764
Reference Numbers (Interchange):
Dayco: 89383
ACDelco: 12603527
Vehicle Fitment
BUICK GL8 I (CU2): 3.0 2006-2010
Additional compatible models (verify before ordering):
BUICK: LaCrosse 2010-2016 (3.0L, 3.6L)
CHEVROLET: Traverse 2013-2019 (3.6L)
GMC: Acadia 2013-2019 (3.6L)
Engine Compatibility: 3.0L V6 – LFW, 3.6L V6 – LFX
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- OE-replacement belt tensioner for Buick GL8 3.0L and GM V6 applications. Matches OEM specifications including 12603527 and 12577764.
- 73 mm outside diameter and 26.5 mm width provide exact fitment for the serpentine belt drive system.
- Spring-loaded automatic tensioning mechanism maintains optimal belt tension as the belt stretches over time.
- Precision-engineered bearing ensures smooth rotation and consistent belt tension.
- Durable construction ensures long service life and reliable performance.
Installation Notes
- Verify the 73 mm outside diameter and 26.5 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 compatible with GM LFW and LFX V6 engines – 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
