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Expansion Tank 3RG 81739Expansion Tank 3RG 81739 (2)Expansion Tank 3RG 81739 (3)
81739EAN 8433819049663

Expansion Tank 3RG 81739

coolant expansion tank 3RG 81739. Fits 54 car models (AUDI, SEAT, SKODA +1). Replaces 3 OE numbers.

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Specification. From the manufacturer's data.

Brand
3RG
Category
coolant expansion tank
MPN
81739
SKU
4598-81739
GTIN / EAN
8433819049663
What's included
1x coolant expansion tank

OE numbers. The originals this part replaces.

Numbers the vehicle makers and other brands use for this part. Only a confirmed OE number links to its own page; other brands' equivalents are under “Equivalent products”.

Where this part fits

Original-fit position for OE 1K0121407F. The red ring marks where this part installs on the vehicle.

Coolant expansion tank — Jetta Jetta A6 (Typ AJ/16) (2011–2018) — Cooler for coolant flange Reservoir
Jetta Jetta A6 (Typ AJ/16) (2011–2018) · Cooler for coolant flange ReservoirPosition 20

Equivalent products. They fit in the same place.

14 available · 75 numbers In stock from £14.99 to £25.99.

All coolant expansion tank
Show 2 more
All 75 cross-reference numbers

Numbers other makers give for this part. They are aftermarket numbers, not the vehicle maker's OE numbers; a linked number is one we sell.

  • A.Z. Meisterteile AZMT450201302
  • ABAKUS 053026011
  • AIC 52206
  • AKRON-MALÒ 117058
  • AKS DASIS 043022N
  • alp ALP001530
  • Aslyx AS201530
  • AUTOMEGA 160057210
  • BBR Automotive 0026012176
  • BIRTH 8779
  • BOGAP A4240100
  • Borsehung B11940
  • Borsehung B19280
  • Borsehung B19286
  • BSG BSG90550006
  • BUGIAD BSP21798
  • CALORSTAT by Vernet ET0004C1
  • CAUTEX 954260
  • DIPASPORT VEA001DPSN
  • DOGA 40X0031
  • ESEN SKV 61SKV305
  • ESEN SKV 61SKV306
  • FARE SA 3848
  • FEBI BILSTEIN 46748
  • GK 706320
  • GOOM RT0015
  • hajus Autoteile 1211060
  • HELLA 8MA376702434
  • HEPU TM6320
  • HOFFER 2035004
  • JP GROUP 1114700500
  • KALE OTO RADYATÖR 343640
  • KRAFT AUTOMOTIVE 1540015
  • KRAFTVOLL GERMANY 08020359
  • MAHLE CRT19000S
  • MAXGEAR 770048
  • MEAT & DORIA 2035004
  • Metalcaucho 03817
  • METZGER AUTOTEILE 2140148
  • MEYLE 1002230009
  • MI.R.A. 144247
  • MTR 10725150
  • NISSENS 996116
  • NRF 454082
  • NTY CZWVW002
  • ORIGINAL IMPERIUM 44107
  • OSSCA 01414
  • PLYOM P954260
  • PREXAparts P127005
  • Professional Parts 00263001
  • QUINTON HAZELL QVE543
  • REACH 12512070
  • RIDEX 397E0040
  • RIDEX 397E0156
  • Stark SKET0960039
  • Stark SKET0960155
  • STC T403817
  • STELLOX 7551209SX
  • SWAG 30946748
  • THERMOTEC DBW009TT
  • TOPRAN 110055
  • TRICLO 483599
  • TRUCKTEC AUTOMOTIVE 0719191
  • UNIGOM 221814
  • VAICO V100433
  • VEMA 163051
  • vika 11210083401
  • vika 11211837501
  • WILMINK GROUP WG1795461
  • WILMINK GROUP WG2161651
  • WILMINK GROUP WG2184333
  • WILMINK GROUP WG2232095
  • WILMINK GROUP WG2360188
  • WXQP 321991
  • YSPARTS YSET004

Compatible cars. AUDI, SEAT, SKODA +1, 54 models.

Matched from the manufacturer's data.

coolant expansion tank for AUDIcoolant expansion tank for SEATcoolant expansion tank for SKODAcoolant expansion tank for VW

Models 3RG 81739 fits
ModelEnginesYears
AUDI6 models
AUDI A3 (8P1)1.2 TSI, 1.4 TFSI, 1.6, 1.6 E-Power, 1.6 FSI, 1.6 TDI, 1.8 TFSI, 1.8 TFSI quattro, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V quattro, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI quattro, 3.2 V6 quattro, S3 quattro2003–2013
AUDI A3 Convertible (8P7)1.2 TFSI, 1.4 TFSI, 1.6, 1.6 TDI, 1.8 TFSI, 1.9 TDI, 2.0 TDI, 2.0 TFSI2008–2013
AUDI A3 Sportback (8PA)1.2 TSI, 1.4 TFSI, 1.6, 1.6 FSI, 1.6 TDI, 1.8 TFSI, 1.8 TFSI quattro, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V quattro, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI quattro, 3.2 V6 quattro, S3 quattro2004–2015
AUDI Q3 (8UB, 8UG)1.4 TFSI, 1.4 TSI, 2.0 TDI, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI quattro, RS 2.5 quattro2011–2020
AUDI TT (8J3)1.8 TFSI, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI quattro, 2.0 TTS quattro2006–2015
AUDI TT Roadster (8J9)1.8 TFSI, 2.0 TDI quattro, 2.0 TFSI, 2.0 TFSI quattro, 2.0 TTS quattro2007–2014
SEAT6 models
Models 3RG 81739 fits
ModelEnginesYears
SEAT ALHAMBRA (710, 711)1.4 TSI, 2.0 TDI, 2.0 TDI 4Drive, 2.0 TSI2010–2022
SEAT ALHAMBRA VAN (711)TDI, TDI 4Drive, TSi2010–2023
SEAT ALTEA (5P1)1.2 TSI, 1.4 16V, 1.4 TSI, 1.6, 1.6 LPG, 1.6 TDI, 1.8 TFSI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TFSI2004–2015
SEAT ALTEA XL (5P5, 5P8)1.2 TSI, 1.4 16V, 1.4 TSI, 1.6, 1.6 LPG, 1.6 Multifuel, 1.6 TDI, 1.8 TFSI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4x4, 2.0 TDI 4x4, 2.0 TFSI, 2.0 TFSI 4x42006–2015
SEAT LEON (1P1)1.2 TSI, 1.4 16V, 1.4 TSI, 1.6, 1.6 LPG, 1.6 MultiFuel, 1.6 TDI, 1.8 TSI, 1.9 TDI, 2.0 Cupra R, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TFSI2005–2013
SEAT TOLEDO III (5P2)1.6, 1.8 TFSI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V2004–2009
SKODA7 models
Models 3RG 81739 fits
ModelEnginesYears
SKODA OCTAVIA II (1Z3)1.2 TSI, 1.4, 1.4 TSI, 1.6, 1.6 FSI, 1.6 LPG, 1.6 MultiFuel, 1.6 TDI, 1.8 TSI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI RS, 2.0 TFSI2004–2013
SKODA OCTAVIA II Combi (1Z5)1.2 TSI, 1.4, 1.4 TSI, 1.6, 1.6 FSI, 1.6 LPG, 1.6 MultiFuel, 1.6 TDI, 1.6 TDI 4x4, 1.8 TSI, 1.8 TSI 4x4, 1.9 TDI, 1.9 TDI 4x4, 2.0 FSI, 2.0 FSI 4x4, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4x4, 2.0 TDI 4x4, 2.0 TDI RS, 2.0 TFSI2004–2013
SKODA RAPID (NH3, NK3, NK6)1.4 TSI2012–2022
SKODA RAPID Spaceback (NH1)1.4 TSI2012–2019
SKODA SUPERB II (3T4)1.4 TSI, 1.6 TDI, 1.8 TSI, 1.8 TSI 4x4, 1.9 TDI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4x4, 2.0 TDI 4x4, 2.0 TFSI, 3.6 FSI 4x42008–2015
SKODA SUPERB II Estate (3T5)1.4 TSI, 1.6 TDI, 1.8 TSI, 1.8 TSI 4x4, 1.9 TDI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4x4, 2.0 TDI 4x4, 2.0 TFSI, 3.6 V6 4x42009–2015
SKODA YETI (5L)1.2 TSI, 1.4 TSI, 1.6 TDI, 1.8 TSI 4x4, 2.0 TDI, 2.0 TDI 4x42009–2017
VW35 models
Models 3RG 81739 fits
ModelEnginesYears
VW BEETLE (5C1, 5C2)1.2 TSI, 1.4 TSI, 1.6 TDI, 2.0 TDI, 2.0 TFSI, 2.0 TSI, 2.52011–2019
VW BEETLE Convertible (5C7, 5C8)1.2 TSI, 1.4 TSI, 1.6 TDI, 2.0 TDI, 2.0 TFSI, 2.0 TSI2011–2019
VW CADDY ALLTRACK IV Box Body/MPV (SAA)2.0 TDI, 2.0 TDI 4motion2015–2020
VW CADDY ALLTRACK IV MPV (SAB)2.0 TDI, 2.0 TDI 4motion2015–2020
VW CADDY III Box Body/MPV (2KA, 2KH, 2CA, 2CH)1.4, 1.6 BiFuel, 1.6 TDI, 1.9 TDI, 1.9 TDI 4motion, 2.0 EcoFuel, 2.0 SDI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4motion, 2.0 TDI 4motion2004–2016
VW CADDY III MPV (2KB, 2KJ, 2CB, 2CJ)1.2 TSI, 1.4, 1.6, 1.6 BiFuel, 1.6 TDI, 1.9 TDI, 1.9 TDI 4motion, 2.0 EcoFuel, 2.0 SDI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4motion, 2.0 TDI 4motion2004–2016
VW CADDY IV Box Body/MPV (SAA, SAH)1.0 TSI, 1.2 TSI, 1.4 TGI CNG, 1.4 TSI, 1.6 TDI, 2.0 TDI, 2.0 TDI 4motion2015–2020
VW CADDY IV MPV (SAB, SAJ)1.0 TSI, 1.2 TSI, 1.4 TGI CNG, 1.4 TSI, 1.6 TDI, 2.0 TDI, 2.0 TDI 4motion2015–2020
VW CC B7 (358)1.4 TSI, 1.4 TSI MultiFuel, 1.8 TSI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TSI, 3.6 FSI 4motion2011–2017
VW EOS (1F7, 1F8)1.4 TSI, 1.6 FSI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TFSI, 3.2 V6, 3.6 V62006–2015
VW GOLF PLUS V (5M1, 521)1.2 TSI, 1.4 16V, 1.4 FSI, 1.4 TSI, 1.6, 1.6 BiFuel, 1.6 FSI, 1.6 MultiFuel, 1.6 TDI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V2004–2013
VW GOLF V (1K1)1.4 16V, 1.4 FSI, 1.4 TSI, 1.6, 1.6 FSI, 1.6 MultiFuel, 1.9 TDI, 1.9 TDI 4motion, 2.0 FSI, 2.0 FSI 4motion, 2.0 GTI, 2.0 SDI, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4motion, 2.0 TDI 4motion, 3.2 R32 4motion2003–2010
VW GOLF V Variant (1K5)1.4, 1.4 TSI, 1.6, 1.6 MultiFuel, 1.9 TDI, 1.9 TDI 4motion, 2.0 TDI, 2.0 TDI 16V, 2.0 TFSI2007–2009
VW GOLF VAN VI Variant (AJ5)1.6 TDi2009–2014
VW GOLF VI (5K1)1.2 TSI, 1.4, 1.4 TSI, 1.6, 1.6 BiFuel, 1.6 MultiFuel, 1.6 TDI, 1.8 TSI, 2.0 GTi, 2.0 R 4motion, 2.0 TDI, 2.0 TDI 4motion2008–2014
VW GOLF VI Convertible (517)1.2 TSI, 1.2 TSI 16V, 1.4 TSI, 1.6 TDI, 2.0 GTI, 2.0 R, 2.0 TDI, 2.0 TSI2011–2017
VW GOLF VI Variant (AJ5)1.2 TSI, 1.4, 1.4 TSI, 1.6, 1.6 MultiFuel, 1.6 TDI, 1.6 TDI 4motion, 2.0 TDI, 2.0 TFSI2009–2014
VW JETTA III (1K2)1.4 TSI, 1.6, 1.6 FSI, 1.6 MultiFuel, 1.6 TDI, 1.9 TDI, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V, 2.0 TFSI2004–2013
VW JETTA IV (162, 163, AV3, AV2)1.2 TSI, 1.4 TSI, 1.4 TSI Hybrid, 1.6, 1.6 TDI, 2.0, 2.0 TDI, 2.0 TFSI, 2.0 TSI, 2.52008–2019
VW PASSAT ALLTRACK B7 (365)1.8 TSI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TSI 4motion2012–2014
VW PASSAT B6 (3C2)1.4 TSI, 1.4 TSI EcoFuel, 1.6, 1.6 FSI, 1.6 TDI, 1.8 TSI, 1.9 TDI, 2.0 BlueTDI, 2.0 FSI, 2.0 FSI 4motion, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4motion, 2.0 TDI 4motion, 2.0 TFSI, 3.2 FSI 4motion, 3.6 R36 4motion2005–2011
VW PASSAT B6 Variant (3C5)1.4 TSI, 1.4 TSI EcoFuel, 1.6, 1.6 FSI, 1.6 TDI, 1.8 TSI, 1.9 TDI, 2.0 BlueTDI, 2.0 FSI, 2.0 FSI 4motion, 2.0 TDI, 2.0 TDI 16V, 2.0 TDI 16V 4motion, 2.0 TDI 4motion, 2.0 TFSI, 3.2 FSI 4motion, 3.6 R36 4motion2005–2011
VW PASSAT B7 (362)1.4 TSI, 1.4 TSI EcoFuel, 1.4 TSI MultiFuel, 1.6 TDI, 1.8 TSI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TSI, 3.6 FSI 4motion2010–2016
VW PASSAT B7 Estate Van (365)2.0 TSI2010–2014
VW PASSAT B7 Variant (365)1.4 TSI, 1.4 TSI EcoFuel, 1.4 TSI MultiFuel, 1.6 TDI, 1.8 TSI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TSI, 3.6 FSI 4motion2010–2015
VW PASSAT CC B6 (357)1.8 TSI, 2.0 BlueTDI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TFSI, 3.6 FSI 4motion2008–2012
VW SCIROCCO III (137, 138)1.4 TSI, 2.0 R, 2.0 TDI, 2.0 TFSI, 2.0 TSI2008–2018
VW SHARAN (7N1, 7N2)1.4 TSI, 2.0 TDI, 2.0 TDI 4motion, 2.0 TFSI2010–2022
VW SHARAN VAN (7N1, 7N2)1.4 TSI, 2.0 TDI, 2.0 TSI2010–
VW TIGUAN (5N)1.4 TSI, 1.4 TSI 4motion, 2.0 TDI, 2.0 TDI 4motion, 2.0 TFSI 4motion, 2.0 TSI 4motion2007–2018
VW TIGUAN VAN (5N)1.4 TSI (5N1), 1.4 TSI (5N2), 1.4 TSI 4motion (5N2), 2.0 TDI (5N1, 5N2), 2.0 TDI (5N1), 2.0 TDI 4motion (5N1, 5N2), 2.0 TDI 4motion (5N2), 2.0 TSI 4motion (5N1), 2.0 TSI 4motion (5N2)2007–2018
VW TOURAN (1T1, 1T2)1.4 TSI, 1.4 TSI EcoFuel, 1.6, 1.6 FSI, 1.9 TDI, 2.0 EcoFuel, 2.0 FSI, 2.0 TDI, 2.0 TDI 16V2003–2011
VW TOURAN (1T3)1.2 TSI, 1.4 TSI, 1.4 TSI EcoFuel, 1.6 TDI, 2.0 TDI2010–2016
VW TOURAN VAN (1T1, 1T2)1.9 TDI, 2.0 EcoFuel, 2.0 FSI, 2.0 TDI, FSI2003–2010
VW TOURAN VAN (1T3)1.2 TSI, 1.4 TSI, 1.4 TSi EcoFuel, 1.6 TDI, 2.0 TDi, 2.0 TDI2010–2015

Always verify compatibility with your vehicle before ordering.

More about this part. Related categories and similar parts.

3RG

More 3RG parts

Related categories

All coolant expansion tankAUDISEATSKODAVW

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Common OE numbers for this part

Common original equipment numbers linked to replacement-part pages.

Related Guides

Expansion Tank Buying GuideCoolant loss and cracked tanks — how to spot a failing expansion tank, pressure cap types, and replacement guide.

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2-year warranty against manufacturing defects on all parts, counted from delivery. 14-day money-back guarantee if the part doesn't fit your vehicle. Delivery terms

We ship from the EU to 201 countries. Deliveries within the EU carry no customs charges; outside the UK and the EU, the destination country may charge import duties and taxes, paid on delivery. Delivery times and prices by country

Delivery times to EU countries (working days)

Austria 4–7, Belgium 4–7, Bulgaria 5–9, Croatia 5–9, Cyprus 4–19, Czechia 4–7, Denmark 4–8, Estonia 3–4, Finland 6–10, France 5–8, Germany 3–5, Greece 6–10, Hungary 4–7, Ireland 5–9, Italy 5–9, Latvia 2–3, Lithuania 2–3, Luxembourg 4–7, Malta 4–9, Netherlands 4–7, Poland 3–6, Portugal 6–10, Romania 4–8, Slovakia 4–7, Slovenia 4–8, Spain 6–9, Sweden 5–10