Tensioner Tension Pulley 11287790448 For BMW
The DUHUI Bearing 11287790448 drive belt tensioner pulley is an OE-replacement component for BMW 3 Series E90 and other compatible BMW models equipped with N43, N45, N46, N52, N53, and N54 engines. This tensioner pulley 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 11287790448 and 7790448, this pulley delivers reliable performance for compatible BMW vehicles.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | |
| Part Number | 11287790448 |
| Product Type | Drive Belt Tensioner Pulley |
| Outer Diameter | 70.00 mm (2.756 inch) |
| Inner Diameter | 8.00 mm (0.315 inch) |
| Width | 26.30 mm (1.035 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:
11287790448, 7790448
Reference Numbers (Interchange):
BMW: 11287790448, 11287558141
Continental: 49075
Gates: T39379
Dayco: 89127
Vehicle Fitment
BMW 3 SERIES (E90): 316i, 318i, 320i, 323i, 325i, 328i, 330i, 335i 2004-2011
Additional compatible models (verify before ordering):
BMW: 3 Series (E91) 2005-2012, 1 Series (E81/E82/E87/E88) 2004-2013, X1 (E84) 2009-2015, Z4 (E89) 2009-2016
Engine Compatibility: N43, N45, N46, N52, N53, N54
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- OE-replacement tensioner pulley for BMW 3 Series E90 applications. Matches OEM specifications including 11287790448 and 7790448.
- 70 mm outer diameter, 8 mm inner diameter, and 26.3 mm width provide exact fitment for the serpentine belt drive system.
- Precision-engineered bearing ensures smooth rotation and long service life.
- Durable construction ensures consistent belt routing and reliable performance.
Installation Notes
- Verify the 70 mm outer diameter, 8 mm inner diameter, and 26.3 mm width match your original tensioner pulley before installation.
- Inspect the serpentine belt for wear or damage before installing the new pulley.
- Torque the mounting bolt to manufacturer specifications (refer to the BMW E90 service manual).
- After installation, verify proper belt routing and check for smooth pulley rotation.
- This pulley is compatible with BMW N43, N45, N46, N52, N53, and N54 engine families – 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
