Wheel Hub 512309
The DUHUI Bearing 512309 rear wheel hub bearing assembly (DWH1206) is a direct-fit OE replacement hub unit designed for the rear axle of 2006-2009 Buick Terraza, Pontiac Montana, and Chevrolet Uplander minivans. This Gen 3 wheel hub assembly features a 6-bolt flange with an integrated ABS sensor and a triangular 3-bolt mounting pattern. Manufactured to match OE specifications including 512309 and BR930632, this rear wheel hub bearing delivers reliable performance for these GM minivan applications.
Technical Specifications
| Specification | Value / Detail |
|---|---|
| DH Code | DWH1206 |
| Part Number | 512309 |
| Product Type | Wheel Hub Assembly |
| Installation Location | Rear Axle |
| Bearing Generation | Gen 3 (Roll-Form Design) |
| Bearing Type | Ball Bearing |
| Flange Diameter | 145.40 mm (5.725 in) |
| Bolt Circle Diameter | 114.35 mm (4.502 in) |
| Wheel Pilot Diameter | 70.10 mm (2.760 in) |
| Brake Pilot Diameter | 70.50 mm (2.776 in) |
| Flange Offset | 42.00 mm (1.654 in) |
| Hub Pilot Diameter | 91.30 mm (3.594 in) |
| Hub Bolt Circle Diameter | 117.50 mm (4.625 in) |
| Wheel Stud Quantity | 6 |
| Wheel Stud Size | M12 x 1.5 |
| Flange Bolt Hole Quantity | 3 |
| Flange Bolt Size | M12 x 1.75 |
| Flange Shape | Triangular |
| ABS Sensor | Yes, with integrated sensor |
| Pre-Greased | Yes |
| Wheel Studs Included | Yes |
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:
DWH1206
OE Numbers:
512309, RW8309, BR930632, 12413244, 10397212
Reference Numbers (Interchange):
Timken: HA590158
SKF: BR930632
Moog: 512309
Mevotech: H512309
WJB: WA512309
National: 512309
Vehicle Fitment
BUICK TERRAZA: 2006–2007
Rear Axle – all trims
PONTIAC MONTANA: 2006–2009
Rear Axle – all trims
CHEVROLET UPLANDER: 2006–2008
Rear Axle – all trims
Position: Rear Axle (both driver and passenger sides)
Important Notes:
– This hub is for vehicles with ABS .
– Fits both rear driver and passenger sides. Sold individually.
– Compatible with 6-lug wheel configurations.
– Triangular 3-bolt flange mounting pattern .
Please verify OE number, dimensions and vehicle configuration before ordering.
Product Features
- Direct OE replacement for Buick Terraza, Pontiac Montana, and Chevrolet Uplander. Matches OE specifications 512309 and BR930632 .
- Gen 3 roll-form design locks internal components at a set preload for extended bearing life and reduced vibration .
- Integrated ABS sensor ensures proper anti-lock braking system function .
- Triangular 3-bolt flange configuration provides stable rear axle mounting.
- 6-bolt wheel mounting pattern with M12 x 1.5 wheel studs for secure attachment .
- Pre-set, pre-lubricated, and sealed – maintenance-free design .
Installation Notes
- Verify your vehicle is a 2006-2009 Buick Terraza, Pontiac Montana, or Chevrolet Uplander before ordering.
- Compare flange diameter (145.40 mm), flange offset (42.00 mm), and bolt circle (114.35 mm) against your original hub before installing .
- This hub fits both rear driver and passenger sides. Sold individually .
- Torque the 3 flange bolts (M12 x 1.75) to manufacturer specification (refer to service manual) .
- Torque wheel lug nuts (M12 x 1.5) to manufacturer specification. Wheel studs are pre-installed .
- Ensure the ABS sensor harness is properly connected and routed away from moving parts .
- Do not use an impact wrench to tighten axle nuts – over-torquing can damage the bearing .
About DUHUI Bearing
Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces wheel hub assemblies and related components to OE specifications. Contact us
