2120871X Center Support Bearing For CHEVROLET DODGE GMC

This 2120871X center support bearing (also known as a carrier bearing or hanger bearing) provides a direct-fit replacement for a wide range of Chevrolet, Dodge, GMC, and Ram trucks and SUVs. It supports the driveshaft at the center point, reduces driveline vibration, and protects universal joints from premature wear. This bearing matches OE specifications including GM part numbers 12471505 and 12479237.

Technical Specifications

The inside diameter of 1.378 inches (35.00 mm) is the critical fitment spec for this bearing—this determines whether the bearing seats properly on your driveshaft. The bolt hole center measurement of 6.626 inches (168.30 mm) determines whether the bracket aligns with your vehicle’s chassis mounting points. This is a square-style bearing designed for vehicles equipped with Spicer U-Joint Series 1280-1310-1410.

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 Number & Reference Numbers

DH Code:

OE Numbers:
2120871X, 2120881X, HB88530, 5014097AA, 12471505, 12479237, N217042, 4699991

Reference Numbers (Interchange):
National: HB88530, HB-88530
SKF: HB88530
Timken: HB3513
BCA: NBHB88530
Neapco: N217042
Marmon: A6067
Dodge: 52087585
GM: 12471505, 12479237, 15898102, 23165406

Vehicle Fitment

CHEVROLET: Blazer (1995-2005, V6 4.3L), Blazer (2002, L6 4.2L), S-10 Blazer (1994), S-10 Pickup (1994-2004, L4 2.2L / V6 4.3L), S-10 Pickup (1997-2000, ELECTRIC), SSR (2003, V8 5.3L), Trailblazer (2002-2003, L6 4.2L), C3500 (1995, 7.4L V8)

GMC: Jimmy (1994-2005), Sonoma (1995-2004)

DODGE: Dakota (2000-2002, L4 2.5L), Ram 1500 (1994-2003), Ram 2500 (1994-2003), Ram 3500 (1994-2003)

RAM: 1500 (2011, RWD), 1500 (2012)

FREIGHTLINER: Sprinter 2500 (2005)

Fitment note: This bearing fits vehicles with a 35mm bearing opening and square housing with Spicer U-Joint Series 1280-1310-1410. Please verify OE number, dimensions and vehicle configuration before ordering.

Product Features

• Direct OE replacement. This bearing matches multiple OE specifications including GM 12471505, 12479237, and Dodge 5014097AA for a wide range of Chevrolet, Dodge, and GMC vehicles.
• Precision-engineered fitment. Features a 35mm (1.378″) bore diameter and 168.3mm bolt hole center spacing for exact vehicle compatibility.
• Square-style bracket design. Designed with a square mounting pattern compatible with Spicer U-Joint Series 1280-1310-1410.
• Durable construction. Built with high-quality materials to withstand radial and axial loads for reliable performance in demanding truck and SUV applications.
• Driveline support. Supports the driveshaft to ensure stability and reduce vibration during high-speed rotation.
• Universal joint protection. Helps protect the universal joint and extend its service life.

Installation Notes

• Verify fitment. Confirm this bearing matches your original bearing specifications before installation.
• Check your vehicle configuration. This bearing is designed for select Chevrolet, Dodge, GMC, and Ram vehicles with 35mm bearing opening and square housing. Verify your specific model, year, and drivetrain before ordering.
• Verify the inside diameter. This bearing is designed for a 35mm (1.378″) bearing opening. If your vehicle has a different size, this part won’t fit.
• Confirm bracket style. This is a square-style bearing compatible with Spicer U-Joint Series 1280-1310-1410. Verify your bracket design before purchasing.
• Professional installation recommended. Proper alignment during installation is critical to prevent premature wear and driveline vibration issues.

About DUHUI Bearing

Manufactured by DUHUI Bearing – an automotive bearing supplier established in Zhejiang, China, in 2003. DUHUI produces center support bearings, wheel hub bearings, and related components to OE specifications. Contact us

For fitment questions, compare your old part number against the OE numbers listed above.