Expansion Tank, coolant8K0 121 403 AC

Audi, CUPRA, and Volkswagen OE number, as listed in aftermarket supplier catalogues. Compare listings for this exact number, then confirm the part number and vehicle fitment before ordering.

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€5.00

plus €17.00 shipping to Germany, on Ovoko

Compare 212 listings

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What each marketplace’s search lists for this number, lowest price first, Ovoko last. Listings can include other parts that name it.

AUTODOC

2 listings

New

Checked 2026-05-15 13:53 UTCAftermarket parts whose suppliers list this OE number, not the original part.

€31.20 – €37.65Cheapest listing: MAHLE CRT 95 000S+ €6.95 shipping to GermanyView on AUTODOC

OvokoLowest price

210 listings

Used

Checked 2026-10-06 11:12 UTC

€5.00 – €60.66Cheapest listing: + €17.00 shipping to Germanyestimated delivery in 3–7 daysView on Ovoko

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Aftermarket part numbers

Supplier articles whose catalogue lists 8K0 121 403 AC. Check the supplier’s own restrictions before ordering.

BIRTH: 80595
FEBI: 103414
HELLA: 8MA 366 366-171
MAHLE: CRT 95 000S
METZGER AUTOTEILE: 2140234
MEYLE: 100 223 0015
VAICO: V10-4478
VEMA: 160021

Vehicle fitment

Engine code and production dates decide fitment. Model name and year alone don’t.

187 vehicles in 17 model series, inferred

Aftermarket parts that list 8K0 121 403 AC fit these vehicles according to their supplier catalogues. That does not prove 8K0 121 403 AC itself fits every one: check the engine code, production dates and the supplier’s restrictions on the model series’ vehicle pages.

Audi

17 model series · 187 vehicles

Audi model series inferred from aftermarket parts
Model series	Production	Engine codes	HSN / TSN
A4 (8K) 2007–19 vehicles	11/2007 – 12/2015	CABA, CABB, CAEA, CAEB, CAED, CAGA, CAGB, CAGC, CAHA, CAHB, CALA, CAMA, CAMB, CDHA, CDHB, CDNB, CDNC, CFKA, CGKA, CGKB, CGLC, CGLD, CJCA, CJCB, CJCC, CJCD, CJEB, CLAB, CMEA, CMFA, CMFB, CMGB, CNCD, CNHA, CNHC, CSUA, CSUB	0588 / AGO, AGP, AGR, AGS, AGV, AGW, AGX, AGY, AHG, AHI, AHK, AIT, AKY, ASY, ATC, AUC, AXE, AXG, AYL, BFL, BGB
A4 (8K) Allroad quattro12 vehicles2 of them: some versions only	11/2008 – 12/2016	CAEB, CAGA, CAGB, CAHA, CAHB, CAPA, CCLA, CCWA, CDNC, CDUC, CGLC, CGLD, CJCA, CJCB, CJCD, CKVB, CKVC, CNCD, CNHA, CNHC, CPMA, CPMB, CSUA, CSUB	0588 / AHE, AHN, AHR, AKG, AKI, APH, APL, APQ, APX, AQC, AQD, ASW, ATV, AUE, AUQ, AXM, AXO, AYK, AZQ, AZS, AZU
A4 (8K) Avant14 vehicles	11/2007 – 12/2015	CABB, CAEB, CAGA, CAGB, CAGC, CAHA, CAHB, CDHA, CDHB, CDNB, CDNC, CFKA, CGLC, CGLD, CJCA, CJCB, CJCC, CJCD, CJEB, CMEA, CMFA, CMFB, CNCD, CNHA, CNHC, CSUA, CSUB	0588 / AGZ, AHA, AHB, AHC, AHD, AHM, AHP, AHQ, AJS, ALA, APG, API, APJ, APK, APM, APS, APT, APV, APW, APY, ASX, ATB, ATW, ATX, AXL, AXN, AYJ, AZP, AZR, AZT
A4 (8K) Avant quattro12 vehicles2 of them: some versions only	04/2008 – 12/2015	CAEB, CAGA, CAHA, CAPA, CCLA, CCWA, CDHB, CDNC, CDUC, CFKA, CGLC, CJCA, CJCD, CJEB, CKVB, CKVC, CNCD, CNHA, CPMA, CSUA	0588 / AHE, AHN, AHR, AIS, AJU, ALB, APU, APZ, ASW, AUE, AUZ, AVZ, AXM, AXO, AYK, AZQ, AZS, AZU
A4 (8K) quattro16 vehicles	11/2007 – 12/2016	CAEB, CAED, CAGA, CAHA, CALA, CAPA, CCLA, CCWA, CCWB, CDHB, CDNC, CDUC, CFKA, CGLC, CJCA, CJCD, CJEB, CKVB, CKVC, CMUA, CNCD, CNHA, CPMA, CPMB, CRED, CSUA	0588 / AGQ, AGT, AHJ, AHL, AIP, AIR, AJT, AKZ, ATD, AUB, AUH, AVA, AXF, AXH, AYM
A5 (8F) Cabrio 2009–201720 vehicles	03/2009 – 01/2017	CAEA, CAEB, CAED, CAHA, CAHB, CALA, CDHB, CDNB, CDNC, CGKA, CGKB, CGLC, CGLD, CJCA, CJCD, CJEB, CJEE, CLAB, CNCD, CNCE, CNHA, CSUA	0588 / AJY, AJZ, AKB, AKD, AKS, AKT, AKU, ALC, ASH, ASI, ASJ, AUG, AXP, AXQ, AYN, BEA, BFF
A5 (8F) Cabrio quattro13 vehicles	03/2009 – 12/2017	CAEB, CAED, CALA, CCWA, CDNC, CDUC, CGLC, CKVC, CKVD, CMUA, CNCD, CNCE, CNHA, CPMA, CPMB, CRED	0588 / AKA, AKC, AKE, ASK, ATE, AUF, AXR, AYO, BDX, BFG
A5 (8T) Coupe13 vehicles	10/2007 – 01/2017	CABD, CAHA, CAHB, CDHB, CDNB, CDNC, CGLC, CGLD, CJEB, CJEE, CNCD, CNCE, CNHA, CNHC	0588 / AGB, AGC, AGK, AHF, AIQ, AKR, ARZ, AXS, AYP, BDZ, BFD
A5 (8T) Coupe quattro9 vehicles	06/2008 – 12/2017	CAEB, CAED, CAHA, CDNC, CGLC, CNCD, CNCE, CNHA, CPMA, CPMB	0588 / AHH, AIM, ASZ, AXT, AYQ, BFE
A5 (8T) Sportback18 vehicles	09/2009 – 01/2017	CAGA, CAGB, CAHA, CAHB, CDHB, CDNB, CDNC, CGLC, CGLD, CJCA, CJCB, CJCD, CJEB, CJED, CJEE, CMEA, CMFA, CMFB, CNCD, CNCE, CNHA, CNHC, CSUA, CSUB	0588 / AKP, AKW, ALD, ALE, ALI, ALK, ALM, APG, API, APK, APM, APT, APV, APW, ASD, ASE, ATW, ATX, AXI, AXJ, AYR, AZP, AZR, AZT, BBA, BCI, BEB, BEV, BFB, BGU
A5 (8T) Sportback quattro9 vehicles	09/2009 – 01/2017	CAHA, CDNC, CGLC, CKVD, CNCD, CNCE, CNHA	0588 / AKL, ALF, APL, APX, ATA, AUQ, AXK, AYS, AZS, AZU, BDY, BEW, BFC, BGV
Q5 (8R) 2010–20174 vehicles	05/2010 – 05/2017	CJCA, CJCB, CJCD, CNHA, CSUA, CSUB	0588 / AQI, ARG, ARH, ARI, AXU, AZK, BGI, BHH
Q5 (8R) quattro21 vehicles4 of them: some versions only	05/2008 – 12/2017	CAEB, CAGA, CAGB, CAHA, CAHB, CALB, CCWA, CCWB, CDNB, CDNC, CDUD, CGLA, CGLB, CGLC, CGLD, CHJA, CJCA, CJCB, CJCD, CMGA, CMGB, CNCB, CNCD, CNCE, CNHA, CNHC, CPMA, CPMB, CPNB, CSUA, CSUB, CTBA, CTBC, CTUC, CTUD, CTVA, CTXA	0588 / AIV, AIW, AIX, AIY, AIZ, AJX, ALG, ALH, ALJ, ALS, ALT, ALU, ALV, ALW, ALX, ALY, ALZ, AMA, AOF, AOG, AOH, AOI, AOJ, AOK, AOL, AOM, AON, ARR, AVS, AVT, AVU, AVV, AWC, AWD, AWE, AWF, AXV, AYZ, AZA, AZC, AZL, AZM, AZN, AZO, AZV, BAA, BGC, BGT
RS5 (8F) Cabrio quattro1 vehicle	11/2012 – 12/2015	CFSA	7967 / AAX
S4 (8K) quattro1 vehicle	03/2009 – 12/2015	CAKA, CCBA, CGWC, CGXC, CREC, CTUB	0588 / AJV
S5 (8F) Cabrio quattro1 vehicle	05/2009 – 12/2017	CAKA, CCBA, CGWC, CGXC, CREC, CTDA, CTUB	0588 / AKF
SQ5 (8R) quattro4 vehicles3 of them: some versions only	06/2012 – 05/2017	CGQB, CTUD, CTXA, CVUB, CVUC, DEHA	0588 / AWB, AWV, AZC, AZO, BDV, BEY