Premium Product Traits

• Exceptional quality combined with strong adaptability
• Easy and straightforward to install
• High-caliber aftermarket automotive parts
• Backed by reliable and satisfactory after-sales service
• Precision-engineered for a perfect fit on your car
• Superior performance for a long-lasting service life

Position and Function of the Alternator

In the automotive power and electrical system, the alternator is a core on-board power supply device and also the charging manager for the battery. As a key electrical component attached to the engine, it is installed in the engine compartment and driven by the engine pulley, serving as the primary power source for the vehicle's entire electrical system. It works in conjunction with the battery to supply power to the whole vehicle, being responsible for powering all on-board electrical equipment and recharging the battery.

Main Specifications

• Amperage Rating:140A
• Decoupled Or Clutch Pulley:Yes
• Fan Type:IF
• Belt Type:Serpentine Belt
• Pulley Groove Quantity:6
• Pulley Included:Yes
• Pulley Type:Clutch
• Regulator Type:IR
• Rotation Direction:CW
• Voltage:12V
• Pulley Class:SC6

Interchangeable Part Numbers

• 20351N, 20351, TG14C071, TG14C083, 04C903023K, 04C903023KX, 04C903023M, 04C903023MX

Vehicle Fitment

• Audi - China A3 14-15 All FV7148BAD 1.4T DSG Valeo 140A
• Audi - China A3 14-15 All FV7148LAD 1.4T DSG Valeo 140A
• Audi - China Q3 13-15 All Quattro FV7205LAQ 35TFSI DCT Valeo 140A
• Audi - China Q3 13-15 All Quattro FV7205LBQ 40TFSI DCT Valeo 140A
• Audi - China Q3 13-15 All w/MT FV7145LCM 30TFSI Valeo 140A
• Audi - China Q3 13-15 All FV7145LCD 30TFSI DSG Valeo 140A
• Audi - China Q3 13-15 All FV7205LAD 35TFSI DCT Valeo 140A
• Volkswagen Jetta 2018 L4 1.4L 1395cc 85cid Valeo 140 Amp; Start/Stop Feature
• Volkswagen Jetta 2017 L4 1.4L 1395cc 85cid Valeo 140 Amp; Start/Stop Feature; From 10/10/2016
• Volkswagen Jetta 2016 L4 1.4L 1395cc 85cid Valeo IR/IF, 140 Amp; Start/Stop Feature
• Volkswagen Jetta 2017 L4 1.4L 1395cc 85cid Valeo IR/IF, 140 Amp; Start/Stop Feature; To 10/09/2016
• Volkswagen - China Lavida 2014 All 2WD, D.S.G. 1.4, Turbo, Gas (CST) Valeo IR/IF, 140A​​

Installation Steps Of Alternator

1.Preparations:

① Turn off the engine, disconnect the negative battery terminal and clean the engine compartment.

② Prepare tools: socket wrench, torque wrench, belt tensioner tool.

③ Mark the wiring connectors and belt routing of the original alternator.

2.Remove the Old Alternator:

① Loosen the drive belt with a tensioner tool and remove the belt from the pulley of the old alternator.

② Unplug the electrical connector and remove the battery power cord from the B+ terminal.

③ Loosen and remove the fixing bolts, take off the old alternator, and clean dust and oil from the mounting position.

3.Install the New Alternator:

① Place the new alternator into the mounting bracket, align the holes, and screw in the main fixing bolts (leave 1-2 turns loose for belt adjustment).

② Route the belt back to the alternator pulley as marked, tension the belt with a tensioner.

③ Tighten the adjustment bracket bolts → main fixing bolts in sequence and lock them to the standard torque of the vehicle manual.

④ Reconnect and tighten the power cord on the B+ terminal, and plug in the electrical connector until a "click" is heard to confirm locking.

4 Power-On Test and Finishing:

① Reconnect the negative battery terminal and start the engine to idle for 3-5 minutes.

② Inspection: the pulley runs without jamming or abnormal noise, and the alternator has no oil leakage/peculiar smell.

③ Turn on high-power electrical appliances such as air conditioners and car lights to test stable power supply without belt slipping "squeak".

④ Clean up tools and reset the engine compartment guard plate/clips.

General Protection

1.Avoid colliding with the alternator bearing and wiring connector during installation to prevent component damage.

2.The alternator is a precision electrical component, do not rinse it directly with water to prevent internal water intake and short circuit.

3.If there is rust on the mounting position, a small amount of high-temperature resistant threadlocker can be applied after light sanding to prevent bolts from loosening due to vehicle vibration.

Key Notes

• Please check your vehicle's make, model, year and OE number before purchase to ensure a perfect fit.
• If you have any questions about compatibility or installation, feel free to contact us.
• Don't let a faulty alternator leave you stranded! Upgrade your vehicle with our premium alternator today—fast shipping, precise fit, and dependable long-term performance!