Name: Coolant Expansion Tank NISSENS 996145 OE Ref 4G0121403G
Brand: NISSENS
SKU: NISSENS-996145
Price: 50.00 GBP
Availability: InStock
Rating: 4.8 (578 reviews)

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Coolant Expansion Tank NISSENS 996145 OE Ref 4G0121403G NISSENS

Key Specification:

Content [litre]: 1-6
EAN: 5707286499607
First Fit: Yes
Material: Plastic
NISSENS: Coolant Water

See Full Specification

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£ 50.00

£ 37.85 excl. VAT

In Stock

SKU:	NISSENS 996145
Brand	NISSENS

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Specification
Description
OEM Numbers
Compatibilities
Reviews

Content [litre]

1-6

EAN

5707286499607

First Fit

Yes

Material

Plastic

NISSENS

Coolant Water

Notes

FIRST FIT

OEM Reference number

4G0121403AC

Supplementary Info

with cap

Supplementary Info

with sensor

Supplementary Info

376730734

Coolant Expansion Tank NISSENS 996145 OE Ref 4G0121403G

Coolant Expansion Tank OE Ref 4G0121403G – NISSENS – OEM 4G0121403AC

This Coolant Expansion Tank OE Ref 4G0121403G is supplied by NISSENS as a replacement for OEM reference 4G0121403AC. It is intended for use in selected AUDI vehicles and designed to meet original equipment fit and function requirements.

The part is identified by manufacturer reference 996145 and EAN EAN: 5707286499607, allowing accurate identification and compatibility verification before installation. It is suitable for replacing worn, damaged, or non-functioning components where dependable operation is required.

Correct part selection is essential to ensure proper fitment. Please verify compatibility using the OEM reference number or the vehicle registration lookup tool before ordering.

Vehicle Compatibility

Compatible with selected AUDI models. Detailed compatibility information is available in the Compatibility section of this page.

If this part is not suitable for your vehicle, browse alternative options in our Engine Cooling System category.

Reference number(s) comparable with the original spare part number

AUDI 4G0121403AC AUDI 4G0121403G

OE reference number(s) comparable with the original spare part number

AUDI

AUDI A6 Allroad C7 (4GH, 4GJ) From 01/2012 to 09/2018

3.0 TDI quattro 4WD 01/2012-06/2016, 180 kw, 2967 ccm, 245 PS, Estate, Diesel , ENG: CKVC, CDUD

3.0 TFSI quattro 4WD 09/2014-09/2018, 245 kw, 2995 ccm, 333 PS, Estate, Petrol , ENG: CREC

3.0 TFSI quattro 4WD 01/2012-12/2014, 228 kw, 2995 ccm, 310 PS, Estate, Petrol , ENG: CGWD

3.0 TDI quattro 4WD 09/2014-09/2018, 200 kw, 2967 ccm, 272 PS, Estate, Diesel , ENG: CRTD

3.0 TDI quattro 4WD 09/2014-09/2018, 155 kw, 2967 ccm, 211 PS, Estate, Diesel , ENG: CZVC, CRTF

3.0 TDI quattro 4WD 01/2012-12/2014, 230 kw, 2967 ccm, 313 PS, Estate, Diesel , ENG: CGQB

3.0 TDI quattro 4WD 01/2012-12/2014, 150 kw, 2967 ccm, 204 PS, Estate, Diesel , ENG: CLAA

3.0 TDI quattro 4WD 01/2012-09/2018, 235 kw, 2967 ccm, 320 PS, Estate, Diesel , ENG: CVUA

3.0 TDI quattro 4WD 09/2014-09/2018, 160 kw, 2967 ccm, 218 PS, Estate, Diesel , ENG: CZVA, CRTE

3.0 TDI quattro 4WD 11/2015-09/2018, 140 kw, 2967 ccm, 190 PS, Estate, Diesel , ENG: CZVF

AUDI A6 C7 (4G2, 4GC) From 11/2010 to 09/2018

3.0 TDI quattro 4WD 09/2014-09/2018, 155 kw, 2967 ccm, 211 PS, Saloon, Diesel , ENG: CZVC, CRTF

2.0 TFSI 4WD 09/2014-09/2018, 185 kw, 1984 ccm, 252 PS, Saloon, Petrol , ENG: CYPA, CYNB

1.8 TFSI 4WD 09/2014-09/2018, 140 kw, 1798 ccm, 190 PS, Saloon, Petrol , ENG: CYGA

2.0 TFSI quattro 4WD 05/2015-09/2018, 183 kw, 1984 ccm, 249 PS, Saloon, Petrol , ENG: CYPB

2.0 TDI 4WD 03/2011-09/2018, 120 kw, 1968 ccm, 163 PS, Saloon, Diesel , ENG: CGLD

S6 quattro 4WD 02/2012-09/2018, 309 kw, 3993 ccm, 420 PS, Saloon, Petrol , ENG: CEUC

3.0 TDI quattro 4WD 03/2011-09/2018, 150 kw, 2967 ccm, 204 PS, Saloon, Diesel , ENG: CLAA

3.0 TDI quattro 4WD 11/2011-09/2018, 230 kw, 2967 ccm, 313 PS, Saloon, Diesel , ENG: CGQB

2.0 TDI 4WD 03/2011-09/2018, 130 kw, 1968 ccm, 177 PS, Saloon, Diesel , ENG: CGLC, CMGB

S6 quattro 4WD 10/2014-09/2018, 331 kw, 3993 ccm, 450 PS, Saloon, Petrol , ENG: CTGE

3.0 TDI quattro 4WD 09/2014-09/2018, 240 kw, 2967 ccm, 326 PS, Saloon, Diesel , ENG: CVUB

2.8 FSI quattro 4WD 11/2010-04/2015, 150 kw, 2773 ccm, 204 PS, Saloon, Petrol , ENG: CHVA

3.0 TDI quattro 4WD 09/2014-09/2018, 200 kw, 2967 ccm, 272 PS, Saloon, Diesel , ENG: CRTD

2.0 TDI 4WD 11/2013-09/2018, 140 kw, 1968 ccm, 190 PS, Saloon, Diesel , ENG: CNHA, CZJA, DDDA

2.0 TFSI 4WD 03/2011-05/2013, 155 kw, 1984 ccm, 211 PS, Saloon, Petrol , ENG: CAEB

3.0 TDI 4WD 09/2014-09/2018, 160 kw, 2967 ccm, 218 PS, Saloon, Diesel , ENG: CZVB, CTCC

3.0 TFSI quattro 4WD 03/2011-09/2018, 228 kw, 2995 ccm, 310 PS, Saloon, Petrol , ENG: CGXB, CTUA, CGWD

3.0 TDI 4WD 09/2014-09/2018, 155 kw, 2967 ccm, 211 PS, Saloon, Diesel , ENG: CTCB, CZVD

2.0 TDI 4WD 09/2014-09/2018, 110 kw, 1968 ccm, 150 PS, Saloon, Diesel , ENG: DDCB, CSUD

2.0 TFSI 4WD 05/2011-09/2018, 132 kw, 1984 ccm, 180 PS, Saloon, Petrol , ENG: CDNB

2.0 TFSI quattro 4WD 05/2014-09/2018, 185 kw, 1984 ccm, 252 PS, Saloon, Petrol , ENG: CYPA, CYNB

3.0 TDI quattro 4WD 03/2011-09/2018, 180 kw, 2967 ccm, 245 PS, Saloon, Diesel , ENG: CKVC, CDUD, CDUC, CKVB

2.0 TDI quattro 4WD 04/2015-09/2018, 140 kw, 1968 ccm, 190 PS, Saloon, Diesel , ENG: CNHA, DDDA

3.0 TDI 4WD 11/2010-09/2018, 150 kw, 2967 ccm, 204 PS, Saloon, Diesel , ENG: CLAB

2.8 FSI quattro 4WD 09/2014-09/2018, 162 kw, 2773 ccm, 220 PS, Saloon, Petrol , ENG: CVPA

3.0 TFSI quattro 4WD 11/2010-05/2012, 220 kw, 2995 ccm, 300 PS, Saloon, Petrol , ENG: CGWB, CCAA

2.0 TFSI 4WD 05/2013-09/2018, 162 kw, 1984 ccm, 220 PS, Saloon, Petrol , ENG: CAED

3.0 TFSI quattro 4WD 09/2014-09/2018, 245 kw, 2995 ccm, 333 PS, Saloon, Petrol , ENG: CREC

2.0 TDI 4WD 01/2012-09/2018, 100 kw, 1968 ccm, 136 PS, Saloon, Diesel , ENG: CGLE, CSUE

3.0 TDI quattro 4WD 09/2014-09/2018, 235 kw, 2967 ccm, 320 PS, Saloon, Diesel , ENG: CVUA

2.8 FSI 4WD 11/2010-04/2015, 150 kw, 2773 ccm, 204 PS, Saloon, Petrol , ENG: CHVA

3.0 TDI quattro 4WD 09/2014-09/2018, 160 kw, 2967 ccm, 218 PS, Saloon, Diesel , ENG: CZVA, CRTE

2.0 TFSI Hybrid 4WD 11/2011-04/2015, 180 kw, 1984 ccm, 245 PS, Saloon, Full Hybrid , ENG: CHJA

AUDI A6 C7 Avant (4G5, 4GD) From 05/2011 to 09/2018

2.0 TFSI quattro 4WD 05/2015-09/2018, 185 kw, 1984 ccm, 252 PS, Estate, Petrol , ENG: CYPA

3.0 TFSI quattro 4WD 11/2011-09/2018, 228 kw, 2995 ccm, 310 PS, Estate, Petrol , ENG: CGWD

RS6 quattro 4WD 01/2013-09/2018, 412 kw, 3993 ccm, 560 PS, Estate, Petrol , ENG: CRDB, CWUB

3.0 TDI quattro 4WD 09/2014-09/2018, 200 kw, 2967 ccm, 272 PS, Estate, Diesel , ENG: CRTD

2.0 40 TFSI quattro 4WD 06/2017-09/2018, 185 kw, 1984 ccm, 252 PS, Estate, Petrol , ENG: CYPA

3.0 TDI quattro 4WD 09/2014-09/2018, 155 kw, 2967 ccm, 211 PS, Estate, Diesel , ENG: CZVC, CRTF

1.8 35 TFSI 4WD 06/2017-09/2018, 140 kw, 1798 ccm, 190 PS, Estate, Petrol , ENG: CYGA

2.0 TFSI 4WD 06/2011-09/2018, 132 kw, 1984 ccm, 180 PS, Estate, Petrol , ENG: CDNB

3.0 TDI 4WD 09/2014-09/2018, 155 kw, 2967 ccm, 211 PS, Estate, Diesel , ENG: CTCB, CZVD

2.0 TDI quattro 4WD 04/2015-09/2018, 140 kw, 1968 ccm, 190 PS, Estate, Diesel , ENG: CNHA, DDDA

2.0 TDI 4WD 09/2014-09/2018, 110 kw, 1968 ccm, 150 PS, Estate, Diesel , ENG: DDCB, CSUD

2.8 FSI quattro 4WD 09/2014-09/2018, 162 kw, 2773 ccm, 220 PS, Estate, Petrol , ENG: CVPA

3.0 TDI quattro 4WD 05/2011-09/2018, 180 kw, 2967 ccm, 245 PS, Estate, Diesel , ENG: CKVC, CDUD, CDUC, CKVB

2.0 TDI 4WD 01/2012-09/2018, 100 kw, 1968 ccm, 136 PS, Estate, Diesel , ENG: DDCA, CGLE, CSUE

3.0 TDI 4WD 05/2011-09/2018, 150 kw, 2967 ccm, 204 PS, Estate, Diesel , ENG: CLAB

3.0 TFSI quattro 4WD 05/2011-05/2012, 220 kw, 2995 ccm, 300 PS, Estate, Petrol , ENG: CGWB

S6 quattro 4WD 10/2014-09/2018, 331 kw, 3993 ccm, 450 PS, Estate, Petrol , ENG: CTGE

2.8 FSI 4WD 05/2011-04/2015, 150 kw, 2773 ccm, 204 PS, Estate, Petrol , ENG: CHVA

3.0 TDI quattro 4WD 09/2014-09/2018, 235 kw, 2967 ccm, 320 PS, Estate, Diesel , ENG: CVUA

3.0 TDI quattro 4WD 09/2014-09/2018, 160 kw, 2967 ccm, 218 PS, Estate, Diesel , ENG: CZVA, CRTE

2.0 TFSI quattro 4WD 05/2015-09/2018, 183 kw, 1984 ccm, 249 PS, Estate, Petrol , ENG: CYPB

3.0 TDI 4WD 09/2014-09/2018, 160 kw, 2967 ccm, 218 PS, Estate, Diesel , ENG: CZVB, CTCC

S6 quattro 4WD 02/2012-09/2018, 309 kw, 3993 ccm, 420 PS, Estate, Petrol , ENG: CEUC

2.0 TFSI 4WD 09/2014-09/2018, 185 kw, 1984 ccm, 252 PS, Estate, Petrol , ENG: CYPA, CYNB

3.0 TDI quattro 4WD 11/2011-09/2018, 230 kw, 2967 ccm, 313 PS, Estate, Diesel , ENG: CGQB

1.8 TFSI 4WD 09/2014-09/2018, 140 kw, 1798 ccm, 190 PS, Estate, Petrol , ENG: CYGA

2.0 TDI 4WD 05/2011-09/2018, 120 kw, 1968 ccm, 163 PS, Estate, Diesel , ENG: CGLD

RS6 performance quattro 4WD 11/2015-09/2018, 445 kw, 3993 ccm, 605 PS, Estate, Petrol , ENG: CWUC

3.0 TDI quattro 4WD 05/2011-09/2018, 150 kw, 2967 ccm, 204 PS, Estate, Diesel , ENG: CLAA

2.0 TDI 4WD 05/2011-09/2018, 130 kw, 1968 ccm, 177 PS, Estate, Diesel , ENG: CGLC, CMGB

3.0 TFSI quattro 4WD 09/2014-09/2018, 245 kw, 2995 ccm, 333 PS, Estate, Petrol , ENG: CREC

2.8 FSI quattro 4WD 05/2011-04/2015, 150 kw, 2773 ccm, 204 PS, Estate, Petrol , ENG: CHVA

2.0 TDI 4WD 11/2013-09/2018, 140 kw, 1968 ccm, 190 PS, Estate, Diesel , ENG: CNHA, CZJA, DDDA

3.0 TDI quattro 4WD 09/2014-09/2018, 240 kw, 2967 ccm, 326 PS, Estate, Diesel , ENG: CVUB

AUDI A7 Sportback (4GA, 4GF) From 07/2010 to 05/2018

3.0 TFSI quattro 4WD 01/2011-03/2015, 228 kw, 2995 ccm, 310 PS, Hatchback, Petrol , ENG: CGXB, CTTA, CTUA, CGWD

3.0 TDI quattro 4WD 11/2011-03/2015, 230 kw, 2967 ccm, 313 PS, Hatchback, Diesel , ENG: CGQB

1.8 TFSI 4WD 04/2015-05/2018, 140 kw, 1798 ccm, 190 PS, Hatchback, Petrol , ENG: CYGA

3.0 TDI quattro 4WD 12/2010-03/2015, 150 kw, 2967 ccm, 204 PS, Hatchback, Diesel , ENG: CLAA

3.0 TDI quattro 4WD 10/2010-06/2016, 180 kw, 2967 ccm, 245 PS, Hatchback, Diesel , ENG: CKVC, CDUD, CDUC, CKVB

3.0 50 TFSI quattro 4WD 09/2015-05/2018, 245 kw, 2995 ccm, 333 PS, Hatchback, Petrol , ENG: CREC

2.8 FSI quattro 4WD 10/2010-03/2015, 150 kw, 2773 ccm, 204 PS, Hatchback, Petrol , ENG: CNYA, CHVA

2.0 TFSI 4WD 09/2014-05/2018, 185 kw, 1984 ccm, 252 PS, Hatchback, Petrol , ENG: CYPA

S7 quattro 4WD 07/2014-05/2018, 331 kw, 3993 ccm, 450 PS, Hatchback, Petrol , ENG: CTGE

3.0 TDI 4WD 11/2015-05/2018, 155 kw, 2967 ccm, 211 PS, Hatchback, Diesel , ENG: CTCB, CZVC, CZVD

3.0 TDI quattro 4WD 05/2014-05/2018, 200 kw, 2967 ccm, 272 PS, Hatchback, Diesel , ENG: CRTD

RS7 performance quattro 4WD 11/2015-04/2018, 445 kw, 3993 ccm, 605 PS, Hatchback, Petrol , ENG: CWUC

3.0 TDI 4WD 07/2014-05/2018, 160 kw, 2967 ccm, 218 PS, Hatchback, Diesel , ENG: CZVB, CTCC

3.0 TDI quattro 4WD 11/2015-05/2018, 140 kw, 2967 ccm, 190 PS, Hatchback, Diesel , ENG: CZVE, CZVF

3.0 TDI 4WD 11/2010-03/2015, 150 kw, 2967 ccm, 204 PS, Hatchback, Diesel , ENG: CLAB

2.0 TFSI quattro 4WD 05/2015-05/2018, 185 kw, 1984 ccm, 252 PS, Hatchback, Petrol , ENG: CYPA, CYNB

RS7 quattro 4WD 10/2013-04/2018, 412 kw, 3993 ccm, 560 PS, Hatchback, Petrol , ENG: CRDB, CWUB

2.0 40 TFSI quattro 4WD 09/2015-05/2018, 185 kw, 1984 ccm, 252 PS, Hatchback, Petrol , ENG: CYPA

2.0 TFSI quattro 4WD 05/2015-05/2018, 183 kw, 1984 ccm, 249 PS, Hatchback, Petrol , ENG: CYPB

3.0 TDI quattro 4WD 05/2013-06/2017, 176 kw, 2967 ccm, 239 PS, Hatchback, Diesel , ENG: CPNB

1.8 35 TFSI 4WD 02/2016-05/2018, 140 kw, 1798 ccm, 190 PS, Hatchback, Petrol , ENG: CYGA

2.8 FSI 4WD 02/2011-03/2015, 150 kw, 2773 ccm, 204 PS, Hatchback, Petrol , ENG: CHVA

S7 quattro 4WD 02/2012-03/2015, 309 kw, 3993 ccm, 420 PS, Hatchback, Petrol , ENG: CEUC

2.0 40 TFSI 4WD 09/2015-05/2018, 185 kw, 1984 ccm, 252 PS, Hatchback, Petrol , ENG: CYPA

3.0 TFSI quattro 4WD 10/2010-05/2012, 220 kw, 2995 ccm, 300 PS, Hatchback, Petrol , ENG: CHMA, CGWB

3.0 TDI quattro 4WD 09/2014-05/2018, 240 kw, 2967 ccm, 326 PS, Hatchback, Diesel , ENG: CVUB

2.8 FSI quattro 4WD 09/2014-05/2018, 162 kw, 2773 ccm, 220 PS, Hatchback, Petrol , ENG: CVPA

3.0 TDI quattro 4WD 07/2014-05/2018, 155 kw, 2967 ccm, 211 PS, Hatchback, Diesel , ENG: CTCB, CZVC, CZVD, CRTF

3.0 TDI quattro 4WD 05/2014-05/2018, 235 kw, 2967 ccm, 320 PS, Hatchback, Diesel , ENG: CVUA

3.0 TFSI quattro 4WD 05/2014-05/2018, 245 kw, 2995 ccm, 333 PS, Hatchback, Petrol , ENG: CREC

3.0 TDI quattro 4WD 07/2014-05/2018, 160 kw, 2967 ccm, 218 PS, Hatchback, Diesel , ENG: CZVA, CRTE

3.0 TDI 4WD 11/2015-05/2018, 140 kw, 2967 ccm, 190 PS, Hatchback, Diesel , ENG: CZVE

AUDI A8 D4 (4H2, 4H8, 4HC, 4HL) From 11/2009 to 01/2018

2.0 TFSI hybrid 4WD 02/2012-11/2015, 180 kw, 1984 ccm, 245 PS, Saloon, Full Hybrid , ENG: CHJA

Berry
12 Nov, 2025
elderly car so really pleased that the part could be supplied :-) Correct part arrived swiftly - excellent - thank you
Edward & Susan
20 OCT, 2025
These guys were real helpful when I was looking for an EGR valve. Great communications and fast delivery, the valve did exactly as It was meant to do and it was a lot cheaper than everywhere else I looked. I'll be using eAuto Parts again. Top banana.
Charlie
27 AUG, 2025
eAuto Parts made me happy because it only took 2 minutes to order the part and at a very good price, also very quick delivery, will definitely deal with them again.
Adam Taylor
12 May, 2025
Quick enquiry response, easy buying and quick delivery. Quality of goods was good and fitted with no problem (Suzuki bonnet hinges.) recommended.
Helena Garcia
2 January, 2025
The correct part was rapidly identified and located, and was despatched promply to my chosen repairer in time for the work to be done on schedule. Very pleased with the service and will be using eAuto Parts again.