HB88508AA Center Support Bearing For CHEVROLET FORD CHERY GMC

This HB88508AA center support bearing (also known as a carrier bearing or hanger bearing) provides a direct-fit replacement for the driveshaft of select Chevrolet, Ford, and GMC trucks and vans. 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 12546070 and Ford E9TZ4800A.

Technical Specifications

The bore of 1.575 inches (40.00 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 6.625 inches (168.00 mm) determines whether the bracket aligns with your vehicle’s chassis mounting points. This bearing includes two dust flingers for enhanced protection against contamination.

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:
HB88508AA, 12546070, E9TZ4800A, 15512199, 15635371

Reference Numbers (Interchange):
Timken: HB88508AA
SKF: HB88508AA
National: HB88508AA
BCA: HB88508AA
Neapco: N210873-1X
Spicer: 210873-1X
GM: 12546070, 12377849
Ford: E9TZ4800A
Workhorse: 12546070

Vehicle Fitment

CHEVROLET: CK Pickup (1990-2000), C3500 (1990-2000), Kodiak (1990-1997), P-Series (1997-1999)

FORD: E-Series (1993-1996), F-250 (1993-1996), F-350 (1993-1996)

GMC: CK Pickup (1990-2000), P3500 (1997-1999), W3500 Forward (1995-1996), Topkick (1990-1997), B-Series (1993-1997)

WORKHORSE: 2-Ton (2002-2003)

Fitment note: This bearing fits vehicles with a 40mm bearing opening and is compatible with Spicer 1480 series applications. Please verify OE number, dimensions and vehicle configuration before ordering.

Product Features

• Direct OE replacement. This bearing matches OE specifications HB88508AA and related numbers for Chevrolet, Ford, and GMC commercial vehicles.
• Heavy-duty construction. Manufactured with frames made from reinforced heavy-gauge cold-rolled steel for added strength and durability.
• Pre-greased and sealed. The bearing inserts are pre-greased and sealed at the factory with an additional grease barrier between the sealed bearing and dust shields for maximum protection.
• Precision-engineered fitment. Features a 40mm bore and 6.625″ bolt hole spacing for exact vehicle compatibility.
• Includes dust flingers. Comes with two dust flingers for enhanced protection against contamination.
• 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, Ford, and GMC commercial vehicles. Verify your specific model and drivetrain before ordering.
• Verify the bore. This bearing is designed for a 40mm (1.575″) bearing opening. If your vehicle has a different size, this part won’t fit.
• Check mounting dimensions. Verify the bolt hole center (6.625″), centerline height (2.244″), and width (0.866″) against your original bearing before installation.
• 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.