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Auto Spare Parts Oil Pump Kit OE 30783079 Differential Motor for Volvo
The Oil Pump Kit (Differential Motor) (OE Number: 30783079) is a key lubrication system component for Volvo’s differential assemblies, compatible with a wide range of sedans, estates, and SUVs. It integrates an oil pump and a differential motor, installed within the vehicle’s differential housing. Its core role is to actively circulate and distribute gear oil to the differential’s moving parts (e.g., gears, bearings) — ensuring consistent lubrication to reduce friction, dissipate heat, and prevent premature wear, which is critical for maintaining differential performance (especially during high-load driving like towing or off-roading).
This OE-grade kit features a high-torque, durability-focused construction:
Oil Pump: Precision-machined from cast aluminum or steel, with a gear-driven design that maintains stable oil pressure (matching factory specs) to ensure uniform lubrication. The pump’s internal gears and housing are polished to minimize oil leakage and maximize flow efficiency.
Differential Motor: Electric or hydraulic (per OE configuration) with a corrosion-resistant housing and sealed bearings. It provides consistent torque to drive the oil pump, even under extreme temperatures (-30°C to 120°C) and differential load conditions.
Kit Inclusions: Typically includes the oil pump, differential motor, mounting gaskets, O-rings, and hardware (per factory standards) — ensuring a complete, ready-to-install solution that avoids compatibility issues with generic individual parts.
Core Functions
Active Lubrication Circulation: Drives gear oil through the differential, delivering lubricant to hard-to-reach moving parts (e.g., gear teeth, bearing races) that passive oil splash lubrication may miss — preventing dry friction and metal-to-metal contact.
Heat Dissipation: By circulating oil, the kit carries away heat generated by gear meshing and friction, keeping the differential at an optimal operating temperature (avoiding overheating that degrades oil quality and damages components).
Extend Differential Service Life: Consistent lubrication and heat management reduce wear on gears and bearings, preventing premature failure (e.g., gear pitting, bearing seizing) and extending the differential’s overall service life.
Compatible Vehicles
Applicable Models
Applicable Years
S40 (04-)
2005–2010
V50
2005–2010
S60 (-09)
2003–2009
S80 (-06) / S80 (07-)
2003–2008
V70 (00-08) / V70 (08-)
2003–2008
V70 XC (01-) / XC70 (-07) / XC70 (08-)
2003–2008
XC90 (03-)
2003–2009
*For 100% fitment accuracy:
Confirm the vehicle’s differential type via VIN (e.g., front/rear differential, all-wheel drive vs. front-wheel drive) — this kit is calibrated for specific differential models and lubrication requirements.
Reference the vehicle’s official service manual to verify oil pump pressure specs and motor power type (electric/hydraulic) — mismatched specs will lead to insufficient lubrication or motor failure.
After installation, refill the differential with OE-recommended gear oil (per viscosity and quantity specs) and test oil flow to ensure the pump operates normally.*
Frequently Asked Questions
Q: How to determine if the bumper bracket needs replacement?
A: Signs of a failing bumper bracket include visible damage or deformation, misaligned bumper panels, unusual noises from the front end, or if the bumper appears loose or sagging on one side.
Q: What should be paid attention to when replacing the bumper bracket?
A: For optimal results, we recommend professional installation. Key considerations include ensuring proper alignment of all mounting points, checking for additional damaged components, and verifying all fasteners are properly torqued to specification.
Why Choose Our Products
Extensive Industry Experience: 13 years specializing in Volvo auto parts with precise product matching and technical solutions.
Quality Assurance: 10-stage quality inspection process including durability testing, surface roughness analysis, and dimensional verification.
Manufacturing Excellence: 15,000㎡ production base with 10,000+ SKUs in inventory for fast order fulfillment.
Strategic Partnerships: Collaborations with 50+ factories including suppliers to international brands like Bosch and Hella.
Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop... Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop...
