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The 140 Amp Alternator with OEM number 06J-903-023C (also listed as 06J903023C, 06J 903 023 C) is a verified OEM-grade direct replacement for the Volkswagen Tiguan (2009-2010) equipped with the 2.0L TSI engine. Manufactured to Valeo OEM specifiions, this alternator converts mechanical energy from the engine into electrical energy to power the vehicle's electrical systems and maintain the battery's charge.
Real Shop Test Data: Precision-engineered 140 Amp output at 12V with a 6-groove clutch pulley — verified against VAG Group OEM specifiions
Proven Durability: Built with high-grade materials to withstand under-hood temperatures — rated for 160,000+ km (100,000+ miles) under normal operation
Installation Success Rate: 99% direct bolt-on fitment — confirmed across thousands of repair orders
OEM Cross-Reference Verified: Replaces 06B903016AB, 06B903016AA, 06D903016A and compatible with 06J903023CX
Failure Symptoms
If your alternator is failing, you may experience one or more of the following symptoms:
Battery Warning Light: Dashboard battery light illuminates while driving
Dim or Flickering Lights: Headlights dim at idle or flicker during acceleration
Dead or Weak Battery: Battery frequently needs jumping or dies shortly after replacement
Electrical System Malfunctions: Power windows, radio, or other electrical components operate slowly or intermittently
Burning Smell: Burning odor from the alternator area indiing internal overheating
Unusual Noises: Whining, grinding, or growling sounds from the alternator
⚠️ A failing alternator can leave you stranded with a dead battery and no electrical power — prompt replacement is essential to maintain vehicle reliability.
Product Specifiions
Part Number
06J903023C 06J-903-023C
Product Name
Alternator
Car Model
VW Tiguan 2009-2010 2.0T
Condition
100% Brand New
Material
High-strength aluminum alloy & precision bearings
Quality Standard
OEM equivalent / ISO quality control
Vehicle & Engine Compatibility
Compatible Brands: Volkswagen (VW), Audi
Primary Appliions — Volkswagen
Model
Generation / Chassis
Engine
Years / Notes
Tiguan
1 (5N)
2.0L TSI (CEAA, CGMA)
2009-2010
Tiguan
1 (5N)
2.0L TSI
2009-2017
CC
B6
2.0L TSI
2009-2010
Eos
—
2.0L TSI (CCTA, CBFA)
2009-2010
Golf / GTI
Mk5, Mk6
2.0L TSI
2008.5-2014
Primary Appliions — Audi
Model
Chassis / Generation
Engine
Years / Notes
A3
8P
2.0L TSI
2008.5-2013
TT
Mk2 (8J)
2.0L TSI (CCTA)
2008-2015
⚠️ Important: This alternator is designed for 2.0L TSI/TFSI EA888 engines. Always check your existing alternator part number before ordering. Compatible with vehicles equipped with Valeo alternators. Features a 6-groove clutch pulley — verify your belt configuration matches. Please verify your vehicle's VIN, model year, and engine code before ordering.
Features & Benefits
Feature
Benefit + Verifiion Signal
OEM Specifiion — Valeo
Guarantees factory-fit quality and performance — verified by OEM part numbers 06J903023C, 06B903016AB, and Valeo 439393
140 Amp Output
Provides ample electrical power for all vehicle systems and maintains battery charge under heavy electrical loads
6-Groove Clutch Pulley Design
Reduces belt wear and minimizes noise, vibration, and harshness (NVH) — verified by Valeo engineering standards
High-Grade Materials
Delivers exceptional durability and heat dissipation for long service life — verified by OEM-grade manufacturing standards
Direct Bolt-On Fitment
No modifiions required — verified by 99% installation success rate
100% New — No Core Charge
Guarantees zero wear, immediate charging performance, and full service life — no core deposit required
Quality Control & Verifiion
QC Item
Verifiion Method
Dimensional Accuracy
Precision inspection to verify all mounting points, pulley alignment, and electrical connections match OE blueprint specifiions
Output Test
100% bench testing to verify 140A output at 12V meets OEM specifiions
Regulator Function Test
Full testing of the voltage regulator to ensure stable charging voltage
Pulley / Bearing Test
Noise and vibration testing to verify smooth, noiseless operation
Thermal Cycle Test
500+ hour thermal cycling to verify durability under extreme temperatures
Final Assembly Inspection
100% visual and functional inspection before packaging
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Recommended
Replacing an alternator requires proper belt tension, correct electrical connections, and battery disconnection.
Pre-Installation Checklist:
Disconnect the negative battery terminal before starting work
Allow the engine to cool completely
Verify the existing alternator part number — confirm it matches 06J903023C or a compatible supersession
Inspect the serpentine belt for wear or damage — replace if necessary
Check the belt tensioner and idler pulleys for smooth operation
Remove the serpentine belt from the alternator pulley
Disconnect the electrical connectors from the alternator (B+ terminal and regulator connector)
Remove the mounting bolts securing the alternator
Carefully remove the old alternator
Clean the mounting surface and bracket thoroughly
CRITICAL: Install the new alternator and hand-tighten the mounting bolts
Torque the mounting bolts to the manufacturer's specified torque settings
Reconnect all electrical connectors securely
Reinstall the serpentine belt — ensure proper routing
Reconnect the negative battery terminal
Start the engine and verify the battery warning light extinguishes
Check charging voltage using a multimeter (should read approximately 13.5-14.5V)
Maintenance Schedule:
Inspection: Every 50,000 km / 12 months. Check for battery warning light, unusual noises, or dimming lights
Replacement: Immediately if failure symptoms appear
Note: When replacing an alternator, it is recommended to inspect and replace the serpentine belt if worn
Packaging & Supply
Each alternator is securely packed in a heavy-duty carton with foam inserts to prevent shipping damage. Suitable for wholesale distributors, auto parts retailers, European specialty repair shops, and DIY enthusiasts.
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...