51720-2J000 Automotive Wheel Bearing Assembly

Boutique Manual Validation: Every bearing passes through rigorous, hands-on physical inspection in our specialized assembly workshop, ensuring perfectly smooth rotation and flawless seal seating prior to packaging.
Optimized Multi-Lip Sealing: Heavy-duty NBR (Nitrile Butadiene Rubber) seals aggressively purge road water, deep mud, and corrosive winter salts from the internal ball raceways, drastically extending the component's operational lifespan in harsh climates.
Pre-Loaded Double-Row Architecture: Manufactured with precise internal clearance tolerances, ensuring the internal ball bearings are perfectly spaced to handle intense bi-directional thrust loads during high-speed highway driving.
Premium Steel Forging: Constructed from vacuum-degassed GCr15 bearing steel, which undergoes advanced thermal hardening to resist subsurface fatigue and prevent premature raceway spalling under heavy braking.
Zero-Maintenance Design: Completely sealed for life and pre-lubricated with extreme-pressure (EP) grease, eliminating the need for periodic mechanic servicing.

Product Introduction

The 51720-2J000 is a highly requested Generation 1 automotive wheel bearing, specifically engineered for the front and rear axles of massively popular global vehicle platforms, including the Hyundai Tucson, Hyundai Santa Fe, and Kia Sorento. Functionally classified under the DAC42760039 dimensional footprint, this double-row angular contact bearing acts as the foundational rotational anchor for millions of passenger vehicles, taking on the heavy responsibility of managing intense lateral cornering forces and heavy vertical payload weight.

Within our dedicated hundreds-of-square-meters residential assembly workshop, we aggressively reject the mass-produced, automated "ship-and-forget" mentality that plagues standard massive factory lines. We understand that a failing wheel bearing leads to dangerous wheel wobble, brake pedal pulsation, and eventual catastrophic hub failure. Therefore, our specialized team processes every single 51720-2J000 unit by hand. We manually verify the heavy-duty synthetic rubber seals and perform physical rotational drag tests to ensure the high-temperature grease pack is flawlessly distributed. This boutique, piece-by-piece quality control approach allows us to intercept the microscopic manufacturing defects that robotic cameras miss, guaranteeing that your B2B automotive clients receive a replacement part of uncompromising safety and total silence.

Product Specifications

Specification	Details
Item Type	Automotive Wheel Bearing (Generation 1 / DAC Series)
OEM Part Number	51720-2J000
Alternative SKU	513058 / DAC42760039
Inner Diameter (d)	42.0 mm (1.6535 in)
Outer Diameter (D)	76.0 mm (2.9921 in)
Width (B)	39.0 mm (1.5354 in)
Bearing Design	Double Row Angular Contact Ball Bearing
Seal Type	2RS (Double-sided Multi-Lip Rubber Seals)
Material	Premium High-Carbon Chromium Steel (GCr15 / SAE 52100)
Lubrication	Pre-filled High-Temperature Automotive Grease

Applications

The 51720-2J000 is a versatile bearing extensively utilized in both Front-Wheel Drive (FWD) and All-Wheel Drive (AWD) drivetrains. Its primary applications include:

Hyundai Platforms: Hyundai Tucson (2005–2023), Hyundai Santa Fe (2000–2012), Hyundai ix35 (2009–2015).
Kia Platforms: Kia Sorento (2003–2009), Kia Sportage (2005–2016), Kia Borrego (2009–2010), Kia Sedona (2002–2005).
Ford / Chrysler Platforms: Compatible with legacy vehicle axles including Chrysler PT Cruiser, Chrysler Neon, Ford Mustang, and Ford Taurus.

Equivalent Models

DAC42760039 (Standard DAC Series Designation)
513058 (National / North American Aftermarket Standard)
VKBA3935 / VKBA6944 (SKF European Aftermarket Standard)
FW115 (Chicago Rawhide)
H513058 (Mevotech)

Cross Reference

To ensure absolute procurement accuracy for your B2B automotive parts catalog, the 51720-2J000 strictly matches the following OEM and aftermarket interchange part numbers:

Hyundai / Kia OEM: 51720-2J001, 51720-2J100, 51720-FL047, 52710-26500, 52710-26510, 52710-26530, 50310-3E101, 50310-3E102, 50310-3E200, 0K552-33-047, 0K56A-33-047.
Chrysler / Mopar OEM: 05272447AA, 05272448AA, 5272447AA.
Ford OEM: E6DC-1215AA, E6DZ-1215A, E9DC-1215AA, F1DC-1215AA.
Beck/Arnley: 051-4163.

FAQ

Q: Can this Generation 1 bearing be installed with a standard hammer?A: Absolutely not. The 51720-2J000 must be installed using a properly calibrated hydraulic shop press. Striking the bearing will cause instant brinelling (micro-denting of the raceways), destroying the component before the vehicle even leaves the repair shop.
Q: During installation, where should the pressing force be applied?A: When pressing the bearing into the steering knuckle, force must only be applied to the outer ring. When pressing the wheel hub into the bearing, force must only be applied to the inner ring.
Q: Is the 51720-2J000 directional?A: If the vehicle application utilizes an active ABS system that reads directly from the bearing seal, it is highly directional. The side with the magnetic ABS encoder ring must face inward toward the vehicle's ABS sensor. Mechanics must always verify the seal type before pressing.
Q: How does your facility ensure quality without large automated lines?A: We leverage the dedicated focus of a specialized assembly workspace. Instead of batch-testing random samples automatically, our technicians physically handle, rotate, and visually inspect every single unit, guaranteeing a totally silent, zero-defect product for your aftermarket catalog.