$Wheel-hub-bearing-unit-for-GM-USA-512357\512150\512244\512237\HA590092\BR930078$ $Wheel-hub-bearing-unit-for-GM-USA-512357\512150\512244\512237\HA590092\BR930078$ $Wheel-hub-bearing-unit-for-GM-USA-512357\512150\512244\512237\HA590092\BR930078$

Wheel-hub-bearing-unit-for-GM-USA-512357\512150\512244\512237\HA590092\BR930078

Fit Vehicles/Application:GM-USA-BUICK CENTURY,CHEVROLET LUMINA APV,VENTURE,OLDSMOBILE CUTLASS CIERA,SILHOUETTE,PONTIAC MONTANA ,TRANS SPORT

AOZ NO:L-377

OE Numbers:512357

Cross Reference Numbers:512150，512244,512237,HA590092,BR930078

Certification: IATF 16949:2016

Quality Guarantee: 2 years or 60000 kilometers

Fit Vehicles/Application:GM-USA-BUICK CENTURY,CHEVROLET LUMINA APV,VENTURE,OLDSMOBILE CUTLASS CIERA,SILHOUETTE,PONTIAC MONTANA ,TRANS SPORT

AOZ NO:L-377

OE Numbers:512357

Cross Reference Numbers:512150，512244,512237,HA590092,BR930078

Certification: IATF 16949:2016

Quality Guarantee: 2 years or 60000 kilometers

OEM-NUMBER	Cross Reference code
512357	512150
	512244
	512237
	HA590092
	BR930078

Fit Vehicles
Buick
CENTURY	1994-1996
CHEVROLET
LUMINA APV	1992-1996
VENTURE	1997-2004
OLDSMOBILE
CUTLASS CIERA	1994-1996
SILHOUETTE	1992-2004
PONTIAC
MONTANA	1999-2004
TRANS SPORT	1992-1996

GENERAL PRODUCT DATA
Brand or Logo	AOZ or customer brand
Place of Origin	China, Zhejiang
Product Name	AOZ High Quality Front Wheel Hub Auto Part Wheel Hub Unit
Packing	White Box / Colour Box / Customized
Certification	ISO/TS16949 - 2016
Sample	Available
Delivery	Sea / Air / Land / Express
Supply Ability	10000 Piece / Per Month
Port	Shanghai, Ningbo, Yiwu, Guangzhou
ABS Sensor	Yes

ACCURACY SPECIFICATIONS
Bearing materials	GCr15 = SAE52100
Flange materials	55# Steel (High quality)
Ball / roller materials	GCr15 = SAE52100
Cage materials	Top Grade PA66 + GF25
Seal materials	Stainless steel + NBR
Wheel stud grade	10.9
Bearing rings hardness control	60-66 HRC
Ball / roller hardness control	61-66 HRC
Inner and outer ring race max roughness control	≤0.20μm
Inner and outer ring race max roundness control	≤3μm
Product inspection	100%
Quality Guarantee	2 years or 60,000 Kilometers

ABOUT US

Hangzhou Langtian Auto Parts Co.Ltd Its own brand is"AOZ".Headquartered in Xiaoshan District,Hangzhou City,Zhejiang Province.It's professional manufacture vanous automotive beanings,including wheel bearings,wheel hub units,wheel beaning kits and non-standard beanings.Theproduct range more than 1000 kinds and continually innovates and introduces new productsannually and also obtained the IATF16949 Certification.The advanced production equipment,professional team,and more than 15 years expenence,Ensures the supply the high-qualityproducts and excellent serices.

AOZ Production Equipments

Advanced equipment ensures the stable product quality,including roughing and finishinglathes,medium frequency quenching machines,hub unit outer ring grinders,hub unit flangegrinders,spline broaching machines,grinding production lines,and more.Advance equipment ensure supplythe stable productquality.

AOZ Testing Equipment

"AOZ" factory imports advanced testing equipment From Japan,It's including Profilometer,Roughness Meter,Roundness Instruments,Vickers hardness and metallographic microscopesetc.

OUR ADVANTAGES /WHY CHOOSE US

01	Flawless OEM Specification Alignment Perfect engineering design that seamlessly matches precise original equipment level

02	requirements.Top-Tier Material Selection Premium material choices for all internal components,including high-gradeGCr15=SAE52100 bearing steel and advanced PA66+GF25 cages.

03	Precision Manufacturing &Automation Driven by state-of-the-art automated production machinery and advanced specialized testingfacilities.100%Comprehensive Inspection04Rigorous testing implemented throughout every phase of the manufacturing process andindividual final product validation.

Extensive Vehicle Applications

A massive,highly versatile product range featuring over 1,000 unique models designed forglobal vehicle lines.Extended Quality Guarantee06Industry-leading peace of mind with a robust guarantee of 2 years or 60,000kilometers—prioritizing competitive pricing and

customer profit first.

05	Flexible Low MOQ Requirements Highly accommodating structural terms with small order acceptance to activelysupport agile retail and distribution supply chains.

FAQs

Q1: What is the most common early sign of hub bearing wear?

A: A low humming, growling, or rumbling noise that increases with vehicle speed. It often becomes louder during cornering because the load shifts to one side of the bearing.

Q2: Why does a worn bearing sometimes feel rough when the wheel is spun by hand?

A: Damaged rollers or raceways create uneven friction inside the bearing. This can be felt as grittiness, binding, or slight catching when the wheel is rotated with the vehicle lifted.

Q3: Why can excessive bearing clearance cause steering wander?

A: Too much play allows the wheel to move slightly under load. This reduces steering precision and may cause the vehicle to feel unstable, especially at highway speeds.

“Quality First, Customers First", "AOZ" committed to providing reliable products and long-term support to help our partners succeed.

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