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Unit Ultra Premium Heavy Duty Cup Differential Case (45822-3B850)

Cast from upgraded QT450-10 high-strength ductile iron with integral heat treatment, the 45822-3B850 differential case delivers exceptional rigidity and crack resistance for gasoline 4WD Hyundai and Kia vehicles. Strict CNC tolerance control ensures smooth gear meshing with minimal vibration and noise, while the optimized internal oil grooves improve lubrication and heat dissipation for extended component life. The standard sealing groove and positioning stop effectively prevent oil leakage and dust ingress to protect internal gears. This direct-fit replacement matches OEM dimensions exactly for hassle-free installation. Our IATF16949-certified foundry supplies differential rebuild specialists and chassis parts distributors with minimum orders starting at 500 units.
  • 45822-3B850

  • 45822-3B850

  • Hyundai, Kia

  • Santa Fe, Tucson, Sonata, Sorento, Sportage, Optima (K5)

  • 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009

  • Chassis System

  • Differential / Differential Housing

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Quantity:
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Product Description

Our IATF 16949-certified foundry supplies this differential case to differential rebuild specialists and chassis parts distributors. The minimum order quantity ranges from 500 to 1000 units, with adjustable volume options for large-scale procurement demands. Multiple packaging solutions are available, including neutral packaging, branded packaging, and MOBIS-standard packaging, to match different inventory and sales scenarios. Each unit undergoes dimensional inspection and material testing before shipment to ensure consistency with listed specifications. Customized production adjustments can be discussed for bulk orders with specific requirements.

45822-3B850 Cup Differential Case

45822-3B850 Cup Differential Case Core Specifications

Specification Item

Details

OE Part Number

45822-3B850

Part Category

Differential / Differential Housing

Applicable System

Chassis System

Base Material

QT450-10 ductile iron

Supported Transmissions

A6MF1, A6MF2, A6LF1, A6LF2, A6LF3

Compatible Vehicle Makes

Hyundai, Kia

Drive Type Compatibility

Gasoline 4WD configurations

45822-3B850 Differential Housing Design & Functional Features

Material and Integral Heat Treatment

This differential case is cast from QT450-10 ductile iron and processed with integral heat treatment. Per GB 1348 standards, the material has a minimum tensile strength of 450 MPa and minimum elongation of 10 percent, with a ferrite matrix structure that supports crack and deformation resistance under continuous load conditions. The heat treatment process adjusts the material microstructure to improve impact resistance during variable torque and road vibration conditions, suitable for both daily urban driving and rough road operation. All casting processes follow IATF 16949 production specifications, with consistent material properties across batch production.

CNC Machining and Lubrication Structure

All mating surfaces and mounting positions are machined with CNC equipment under controlled tolerance ranges. The precision machining ensures consistent gear meshing clearance, which reduces vibration and operational noise during differential operation. The internal oil grooves are optimized in shape and position to guide transmission fluid through gear contact surfaces, improving lubrication coverage. This design also supports heat dissipation during continuous high-load operation, which contributes to extended service life of internal gear components.

Sealing and Positioning Structure

The housing is designed with a standard sealing groove and integrated positioning stop. The sealing groove provides a stable mounting surface for matching seals, which reduces the risk of transmission fluid leakage under pressure changes. The positioning stop ensures accurate alignment during assembly, preventing misalignment that could cause seal wear or dust ingress. This structure protects internal gears from contamination by external dust and debris during vehicle operation.

Compatible Vehicles and Transmissions for 45822-3B850 Differential Case

Fitment Vehicle Models

This differential case is designed for gasoline 4WD variants of Hyundai and Kia vehicles. Verified fitment includes:

Hyundai: Santa Fe (2009-2015), Santa Fe Sport, ix45, Maxcruz

Kia: Sorento (2009-2018), Sportage (2014-2016)

All dimensions match the original OEM part specifications, allowing direct replacement without modification to mounting points or surrounding components.

Supported Transmission Types

The 45822-3B850 differential case works with A6MF and A6LF series automatic transmissions, including A6MF1, A6MF2, A6LF1, A6LF2 and A6LF3. It functions as the carrier for differential gear sets, managing torque distribution between drive wheels and supporting differential rotation during steering.

FAQ About 45822-3B850 Differential Case

Is 45822-3B850 manufactured to OEM specifications?

This is an aftermarket replacement part produced to meet or exceed OEM dimensional and performance specifications. It matches the fit, form and function of the original part, and can be installed as a direct replacement for the OEM 45822-3B850 unit.

How can I verify this part fits my vehicle?

The most reliable method is to cross-reference the OEM part number 45822-3B850 with your vehicle’s part catalog. You may also provide your vehicle VIN to our support team for fitment verification. Confirm that your vehicle uses a gasoline 4WD configuration and matching A6MF/A6LF series transmission before ordering.

What tools are needed for installation?

Standard automotive hand tools are sufficient for most installation procedures. A torque wrench is recommended to tighten all mounting fasteners to factory torque specifications. Refer to the official service manual for your specific vehicle model for complete assembly procedures and torque values.

What does the warranty cover for this differential case?

Warranty coverage applies to manufacturing defects under normal use and installation conditions. Damage caused by improper installation, competitive racing use, or unauthorized modification is not covered by the warranty. Refer to our full warranty policy for detailed coverage terms and claim procedures.

It is recommended to replace matching gaskets, seals and transmission fluid at the same time as the differential case. This practice helps ensure consistent sealing performance and avoids repeated labor costs from secondary disassembly.

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