SKU: 3048464012

Alternator 12V 140A for VW Golf 5/6, Jetta 5/6 & Audi A3 - ALT1242A

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Description

Alternator 12V 140A for VW Golf 5/6, Jetta 5/6 & Audi A3 - ALT1242AVehicle Fitment & Part Details This alternator (ALT1242A, OE 03L 903 023 F) fits a broad range of VAG platform vehicles including VW Golf 5 6 7, Jetta 4 5 6, Polo, Passat, Tiguan, Touran, Caddy, Transporter T5, Crafter, CC, Sharan, Scirocco, Beetle, Polo Vivo, and Audi A1, A3, A4, Q3, TT, S3, and RS3. The alternator generates electrical power and charges the battery while the engine runs. Confirm compatibility by matching the listed fitment details,

Vehicle Fitment & Part Details

This alternator (ALT1242A, OE 03L-903-023-F) fits a broad range of VAG platform vehicles including VW Golf 5/6/7, Jetta 4/5/6, Polo, Passat, Tiguan, Touran, Caddy, Transporter T5, Crafter, CC, Sharan, Scirocco, Beetle, Polo Vivo, and Audi A1, A3, A4, Q3, TT, S3, and RS3. The alternator generates electrical power and charges the battery while the engine runs. Confirm compatibility by matching the listed fitment details, OEM reference numbers, and VIN/engine/chassis information where variants exist.

Key Details

SKU
ALT1242A
Component
Alternator

OEM Reference Numbers

  • VAG: 03L-903-023-F
  • 03L-903-023F
  • 03L903023F
  • 03L-903-023-FX
  • 03L903023FX
  • 06F-903-023A
  • 06F903023A
  • 06F-903-023AX
  • 06F903023AX
  • 06F-903-023-C
  • 06F-903-023C
  • Mercedes-Benz: HVAG0001540102
  • HVW 000 154 01 02

Product Specifications

Specification Value
Voltage 12 V
Charging Current 140 A
For Manufacturer (Regulator Type) Valeo
Number of Ribs 6
Pulley With freewheel (overrunning) belt pulley

Vehicle Fitment

Includes 73 supplied applications.

View Full Vehicle Fitment (73 applications)
Make Model Engine Code Power Years
Audi A1 1.2 TFSi CBZA 71 kW 2011-
Audi A1 1.6 TDi CAYB 79.5 kW 2011-
Audi A1 1.6 TDi CAYC 79.5 kW 2010-2015
Audi A1 1.2 TFSi Sportback CBZA 71 kW 2012-
Audi A1 1.6 TDi Sportback CAYC 79.5 kW 2011-
Audi A3 1.6 TDi CAYC 79.5 kW 2010-2013
Audi A3 1.9 TDi BLS, BXE, BK 79.5 kW 2008-2010
Audi A3 2.0 FSi AXW, BMB 82.5 kW 2004-2005
Audi A3 2.0 TDi BKD 81 kW 2003-2012
Audi A3 2.0 TDi CBAB, CFFB 81 kW 2003-2012
Audi A3 2.0 TDi BMM 81 kW 2005-2012
Audi A3 2.0 TFSi AXX, CAWB 82.5 kW 2005-2013
Audi A3 1.6 TDi Sportback CAYC 79.5 kW 2010-2013
Audi A3 1.9 TDi Sportback BLS, BXE, BK 79.5 kW 2008-2010
Audi A3 2.0 FSi Sportback BLX, BLY, BV 82.5 kW 2004-2005
Audi A3 2.0 TDi Sportback BKD 81 kW 2004-2013
Audi A3 2.0 TDi Sportback CBAB, CFFB 81 kW 2004-2012
Audi A3 2.0 TFSi Sportback AXX, BWA, CA 82.5 kW 2004-2013
Audi A3 3.2 V6 Sportback BDB, BUB, BM 84 kW 2004-2009
Audi A3 RS3 2.5 TFSi Quattro CEPA 82.5 kW 2011-2013
Audi A4 1.9 TDi AVF 79.5 kW 2001-2005
Audi Q3 2.0 TDi CFFB, CLJA 81 kW 2012-
Audi Q3 2.0 TDi Quattro CFGC, CLLB 81 kW 2012-
Audi S3 2.0 TFSi BZC 82.5 kW 2007-2012
Audi TT 2.0 TFSI BWA, BPY, CC 82.5 kW 2007-2010
Audi TT 2.0 TTS Quattro CDLA, CDMA 82.5 kW 2008-2014
Audi TT 3.2 V6 BHE 84 kW 2004-2006
VW Beetle 1.2 TSi CBZB 71 kW 2011-
VW Beetle 1.2 TSi CYVD 71 kW 2014-
VW CC 2.0 TDi CFGB, CLLA 81 kW 2011-2013
VW CC 2.0 TDi CFGC 81 kW 2013-2016
VW Golf 3 2.8 VR6 AAA 81 kW 1993-1996
VW Golf 5 1.6 BGU, BSF 81 kW 2004-2008
VW Golf 5 1.9 TDi BKC, BXE 79.5 kW 2004-2008
VW Golf 5 2.0 Comfortline BEV, BHY 82.5 kW 2005-2009
VW Golf 5 2.0 FSi AXW 82.5 kW 2004-2008
VW Golf 5 2.0 FSi BLY 82.5 kW 2004-2008
VW Golf 5 2.0 GTi AXX, BWA, CA 82.5 kW 2004-2008
VW Golf 5 2.0 TDi BKD 81 kW 2004-2008
VW Golf 6 1.6 TDi Comfortline CAYC 79.5 kW 2009-2013
VW Golf 6 1.6 Trendline BSE, BSF 81 kW 2009-2013
VW Golf 6 2.0 TSi GTi CDLG 82.5 kW 2012-2013
VW Golf 6 2.0 TDi CBAB 81 kW 2009-2013
VW Golf 6 2.0 TDi CFFB, CJAA 81 kW 2009-2013
VW Golf 6 2.0 TSi R 4Motion CDLC, CRZA 82.5 kW 2011-2013
VW Golf 7 2.0 TDi CRVA, CYKB 81 kW 2013-
VW Golf 7 2.0 TDi CRLB/MB/BC 81 kW 2013-
VW Jetta 4 1.6i AKL 81 kW 1999-2004
VW Jetta 4 2.0i APK, AZJ, AQ 82.5 kW 1999-2005
VW Jetta 4 2.3 V5 AGZ 81 kW 1999-2001
VW Jetta 4 2.3 V5 AQN 81 kW 2002-2005
VW Jetta 5 1.6 BGU, BSE, BS 81 kW 2006-2010
VW Jetta 5 1.6 TDi CAYC 79.5 kW 2009-2010
VW Jetta 5 1.9 TDi BKC/BLS 79.5 kW 2006-2010
VW Jetta 5 2.0 FSi BLR, BVY, BV 82.5 kW 2006-2010
VW Jetta 5 2.0 TFSi BWA, BPY, CA 82.5 kW 2006-2010
VW Jetta 5 2.0 TDi BMN, CEGA 81 kW 2006-2010
VW Jetta 5 2.0 TDi BKD, CBDB 81 kW 2006-2010
VW Jetta 6 1.2 TSi CBZB 71 kW 2011-
VW Jetta 6 1.6 TDi CAYC, CAYX 79.5 kW 2011-2015
VW Jetta 6 2.0 TDi CFFB, CFHC 81 kW 2011-
VW Passat 1.9 TDi BKC/BLS 79.5 kW 2005-2009
VW Passat 2.0 FSi BLR, BLY, BV 82.5 kW 2005-2008
VW Passat 2.0 TFSi AXX, BWA, BP 82.5 kW 2005-2010
VW Passat 2.0 TDi BKP, CBAB 81 kW 2005-2011
VW Passat 2.0 TDi CBDC 81 kW 2009-2011
VW Passat 3.2 V6 AXZ 84 kW 2005-2010
VW Polo 1.6i Sedan BTS 76.5 kW 2006-2010
VW Polo 1.6i Sedan BUD 76.5 kW 2006-2010
VW Polo 1.6 TDi CAYB 79.5 kW 2009-2011
VW Polo 1.6 TDi CAYC, CLNA 79.5 kW 2010-
VW Polo 1.9 TDi ASZ 79.5 kW 2006-2010
VW Polo Vivo 1.6i 5DR CLSA 76.5 kW 2010-2017
VW Polo Vivo 1.6i Maxx CLSA 76.5 kW 2013-
VW Polo Vivo 1.6i 5DR CLSA 76.5 kW 2018-
VW Scirocco 2.0 TSi R CDLC 82.5 kW 2011-2013
VW Sharan 1.8T AJH, AWC 81 kW 1999-2002
VW Sharan 1.8T AWC 81 kW 2002-2006
VW Sharan 1.9 TDi ASZ 79.5 kW 2002-2006
VW Sharan 2.8 V6 AYL 81 kW 2001-2006
VW Tiguan 2.0 TDi CBAB, CFFB 81 kW 2008-2010
VW Tiguan 2.0 TDi CFFD 81 kW 2011-2016
VW Touran 1.2 TSi CBZB 71 kW 2011-2016
VW Touran 1.6 BGU, BSF 81 kW 2007-2011
VW Touran 1.9 TDi AVQ 79.5 kW 2004-2011
VW Touran 1.9 TDi BKC, BLS, BX 79.5 kW 2004-2011
VW Touran 2.0 FSi AXW 82.5 kW 2004-2007
VW Touran 2.0 TDi BMM 81 kW 2005-2010
VW Touran 2.0 TDi CLCA 81 kW 2011-2016
VW Caddy 1.6i BGU, BSF 81 kW 2004-2015
VW Caddy 1.9 TDI BJB, BLS 79.5 kW 2004-2010
VW Caddy 2.0 SDI BDJ, BST 81 kW 2004-2010
VW Caddy 2.0 TDI CFHF, CLCA 81 kW 2010-2016
VW Caddy 2.0 TDI DSG CFHC 81 kW 2011-2015
VW Crafter 35 2.5 TDi SWB BJK, CEBB 81 kW 2006-
VW Crafter 35 2.5 TDi SWB BJM, CECB 81 kW 2006-
VW Crafter 50 2.5 TDi LWB BJK, CEBB 81 kW 2006-
VW Crafter 50 2.5 TDi LWB BJM, CECB 81 kW 2006-
VW Kombi T5 1.9 TDi 4C AXB 79.5 kW 2004-2010
VW Transporter 1.9 TDI AXB 79.5 kW 2005-2009

Fitment Notes

  • Always match OEM reference number(s) and vehicle details before ordering. Confirm exact fitment using VIN, engine code, or chassis number if multiple variants exist.
  • This alternator is specified with a Valeo-type regulator, 6-rib pulley, and overrunning (freewheel) belt pulley - confirm the removed unit matches these details before ordering.

Installation / Use / Maintenance Tips

  • Disconnect the battery before removing or installing the alternator.
  • Inspect the drive belt, tensioner, pulley alignment, and charging cables before fitting the new unit.
  • Ensure the main B+ terminal and plug connections are clean and secure.
  • After installation, verify charging voltage at idle and at load, and confirm no battery or charging warnings remain.

Common Questions

Will this alternator fit my VW or Audi?
This part (ALT1242A) is listed for the fitments shown on this page. Confirm by matching the fitment details, OEM number, and VIN/engine code where variants exist.

What OEM part numbers does this cross-reference?
Cross-reference numbers are listed in the OEM Reference Numbers section above. Match at least one to your original part before ordering.

How do I confirm fitment if there are multiple variants?
Use VIN, engine code, and chassis/platform details and compare them to the fitment section above. If unsure, request fitment assistance before ordering.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3048464012

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4.3 ★★★★★
Based on 19 reviews
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Product Reviews
R
Rebecca
Belleville, US
★★★★★ 5
Pretty initial necklace
Color: A, Color: A
This is a cute necklace that I ordered for my daughter. This necklace is nice because it's decent quality but I wouldn't be devastated if it broke or got lost. The initial is nicely made and the chain is delicate. It's the perfect size for my 7 year old and I think my 11 year old would also like it. When I ordered it, it was $15 but now there is a coupon to make it $12 which is a great value. I would buy it for myself if it was silver. It comes in a nice box that makes it great for gifting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
K
Kayla
Los Angeles, US
★★★★★ 4
Great for daughter or friend!
Color: E, Color: E
This is absolutely perfect for a daughter for Valentine’s Day or a gift just to give. The initial is in a gold with a gold chain and a precious pink heart. Easy to use gold clasp to put it on or off. The chain seems pretty regular like most chains, but seems durable enough to wear everyday. It hasn’t tarnished or turned any necks green so it’s skin safe I would say. Wouldn’t recommend showering with it, but it has stayed gold with no tarnish. It is simple and cute for a friend, daughter, even a mom.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
W
What_Jenna_Reads
Battle Creek, US
★★★★★ 5
Great for my 8 year old daughter. Dainty and elegant
Color: K, Color: K
This necklace is perfect for my 8 year old daughter. She loves dressing up her clothes with fun necklaces and this one is so elegant and pretty. The chain is very thin so be mindful of that. It could definitely easily break if not taken care of. I do like that it has an adjustable clasp so I can shorten it to where she likes it. The chain is actually a good length so there is room to grow. It is plated so definitely not recommended to wear in water of any kind as it will eventually turn. For the price it’s a good little necklace for younger girls and having their initial on it will be something special for them. The box it comes in is sweet and has a really motivational saying in it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
M
Maegan Murphy
Omaha, US
★★★★★ 5
Must have
This initial necklace is adorable. The gold tone is pretty and shiny without looking cheap, and the pink heart adds the perfect little pop of color. It feels lightweight but well made, and the clasp is easy to use while still feeling secure. I bought it for my daughter and it’s the perfect everyday necklace cute, simple, and special without being over the top. It’s held up well so far with no discoloration, and it looks great layered or worn alone. Such a great little personalized piece.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
J
JZB
Waukegan, US
★★★★★ 5
Beautiful necklace!
I got this beautiful necklace with my daughter’s initial and I was pleasantly surprised when it arrived. It is a 18K gold plated chain and pendant, it looks high quality, and it is very light. My toddler loves the little pink heart, it’s quite the dainty detail! It makes for a beautiful present for your daughter, niece, friend, or loved one. The price is amazing, too! Go grab one or 5!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026

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