Audi A4 Catalytic Converters & DPFs
Select your engine size to see the parts catalogued for your Audi A4.
Audi A4 1.6
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Euro 2 1994–1997 Petrol For engine code ADP (ADP eng)
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Euro 2 1996–1999 Petrol For engine code AHL
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BM90391H — Homologated Petrol Cat
2-year warranty Fitting kit included €147.99(AHL eng) F/pipe & catEuro 2 1996–1999 Petrol Type approved For engine code AHL -
Euro 2 1994–1997 Petrol
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Euro 2 1994–1997 Petrol Type approved
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Euro 2 1998–2001 Petrol For engine code ALZ
See all 7 parts for the Audi A4 1.6 →
Audi A4 1.8
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Euro 2 1997–2001 Petrol For engine code AJL
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Euro 2 1999–2001 Petrol
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BM50485 — Connecting Pipe
2-year warranty Fitting kit included €50.99Turbo 5-speed Manual (BFB; BEX cn 8E-4-000 001 on)Euro 3 or 4 2003–2008 Petrol -
Euro 2 1994–2001 Petrol For engine code ADR
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Euro 2 1998–2001 Petrol For engine codes APU, ARK, ANB
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Euro 2 1994–2000 Petrol 20v Non Turbo (not OBD)
See all 18 parts for the Audi A4 1.8 →
Audi A4 1.9
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Euro 4 2005–2008 Diesel For engine codes BKE, BRB TDi (BKE; BRB engines)
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Euro 4 2005–2008 Diesel For engine codes BKE, BRB TDi (BKE; BRB engines)
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Euro 2 1995–2001 Diesel For engine code AFN AVG
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Euro 2 1995–2000 Diesel For engine code AHU
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Euro 4 2006–2008 Diesel For engine code BRB
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Euro 2 1995–2000 Diesel For engine code 1Z AHU TDi 90bhp (1Z AHU eng)
See all 14 parts for the Audi A4 1.9 →
Audi A4 2.0
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Euro 4 2005–2008 Diesel For engine code BRF
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Euro 4 2005–2008 Diesel For engine code BRF
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BM11054H — Homologated Diesel Cat & DPF
2-year warranty Fitting kit included €227.99TDi Estate (CAGA; CAGB engines; cat/ comb)Euro 4 2008–2012 Diesel Type approved For engine codes CAGA, CAGB -
BM11054HP — Homologated Diesel Cat & DPF — Premium (SiC) 3-year warranty Fitting kit included €291.99TDi Estate (CAGA; CAGB engines; cat/ comb)Euro 4 2008–2012 Diesel Type approved For engine codes CAGA, CAGB
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BM11386H — Homologated Diesel Cat & DPF
2-year warranty Fitting kit included €409.99TDi (CAGA; CJCA; CMEA; CJCA engs;cat/ combined)Euro 5 2007–2015 Diesel Type approved For engine codes CAGA, CJCA, CMEA -
Euro 6 2016–2019 Diesel Type approved For engine code DEUC 30 TDi (DEUC engine; cat/ combined
See all 22 parts for the Audi A4 2.0 →
Audi A4 2.4
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BM90478 — Petrol Cat
2-year warranty Fitting kit included €97.99V6 incl. Quattro (AJG;APZ engs; left hand;not OBD)Euro 2 1997–2000 Petrol For engine codes AJG, APZ -
BM90478H — Homologated Petrol Cat 2-year warranty Fitting kit included €144.99V6 incl Quattro(AGA;ALF;APS;ARJ left hand;not OBD)Euro 2 1997–2001 Petrol Type approved
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BM90510 — Petrol Cat
2-year warranty Fitting kit included €90.99V6 incl. Quattro (AJG;APZ eng; right hand;not OBD)Euro 2 1997–2000 Petrol For engine code APZ -
BM90510H — Homologated Petrol Cat 2-year warranty Fitting kit included €210.99V6 incl. Quattro (AJG;APZ eng; right hand;not OBD)Euro 2 1997–2000 Petrol Type approved For engine code APZ
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BM91073 — Petrol Cat
2-year warranty Fitting kit included €154.99V6 Mk.1 (AMM; AML engs; with OBD; left hand)Euro 2 2000–2001 Petrol For engine codes AMM, AML -
BM91073H — Homologated Petrol Cat 2-year warranty Fitting kit included €386.99V6 Mk.1 (AMM; AML engs; with OBD; left hand)Euro 4 2000–2001 Petrol Type approved For engine codes AMM, AML
See all 10 parts for the Audi A4 2.4 →
Audi A4 2.5
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BM80064 — Diesel Cat
2-year warranty Fitting kit included €137.99TDi Quattro Manual (AKE engine; 2nd cat)Euro 2 2000–2001 Diesel For engine code AKE -
BM80064H — Homologated Diesel Cat 2-year warranty Fitting kit included €188.99TDi Quattro Manual (AKE engine; 2nd cat)Euro 3 2000–2003 Diesel Type approved For engine code AKE
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Euro 2 1998–2001 Diesel For engine codes AKN, AFB
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BM80095H — Homologated Diesel Cat
2-year warranty Fitting kit included €206.99TDi (AKN; AFB engines)Euro 3 1998–2001 Diesel Type approved For engine codes AKN, AFB -
Euro 2 2000–2001 Diesel For engine code AKE
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BM80332H — Homologated Diesel Cat
2-year warranty Fitting kit included €126.99TDi (AYM engine; 1st cat)Euro 3 2001–2002 Diesel Type approved For engine code AYM
See all 7 parts for the Audi A4 2.5 →
Audi A4 2.6
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BM70526 — Front Pipe
2-year warranty Fitting kit included €49.99V6 Manual (non-Quattro; ABC engine; left hand)Euro 2 1994–1997 Petrol For engine code ABC -
BM70527 — Front Pipe
2-year warranty Fitting kit included €74.99V6 Manual (non-Quattro; ABC engine; right hand)Euro 2 1994–1997 Petrol For engine code ABC -
Euro 2 1994–1997 Petrol For engine code ABC
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BM90478H — Homologated Petrol Cat 2-year warranty Fitting kit included €144.99V6 Quattro (ABC engine; left hand)Euro 2 1994–1997 Petrol Type approved For engine code ABC
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BM90510 — Petrol Cat 2-year warranty Fitting kit included €90.99V6 Quattro (ABC engine; right hand)Euro 2 1994–1997 Petrol For engine code ABC
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BM90510H — Homologated Petrol Cat 2-year warranty Fitting kit included €210.99V6 Quattro (ABC engine; right hand)Euro 2 1994–1997 Petrol Type approved For engine code ABC
See all 7 parts for the Audi A4 2.6 →
Audi A4 2.7
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Euro 4 2007–2008 Diesel Type approved For engine code CAMA TDi (CAMA engine; cat/ combined)
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Euro 4 or 5 2007–2011 Diesel TDi 24v Quattro & 2WD
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Euro 4 2007–2008 Diesel For engine code CAMA TDi (CAMA engine; cat/ combined) — Front; short
Audi A4 2.8
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BM70526 — Front Pipe 2-year warranty Fitting kit included €49.99V6 Manual (non-Quattro; AAH engine; left hand)Euro 2 1994–1997 Petrol For engine code AAH
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BM70527 — Front Pipe 2-year warranty Fitting kit included €74.99V6 Manual (non-Quattro; AAH engine; right hand)Euro 2 1994–1997 Petrol For engine code AAH
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BM90478 — Petrol Cat 2-year warranty Fitting kit included €97.99V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; left hand)Euro 2 1997–2000 Petrol
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BM90478H — Homologated Petrol Cat 2-year warranty Fitting kit included €144.99V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; left hand)Euro 2 1997–2000 Petrol Type approved
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BM90510 — Petrol Cat 2-year warranty Fitting kit included €90.99V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; right hand)Euro 2 1997–2000 Petrol
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BM90510H — Homologated Petrol Cat 2-year warranty Fitting kit included €210.99V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; right hand)Euro 2 1997–2000 Petrol Type approved
See all 11 parts for the Audi A4 2.8 →
Audi A4 3.0
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Euro 4 2007–2008 Diesel Type approved For engine code CCWA TDi Quattro (CAPA; CCWA engine; cat/ combined)
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Euro 4 or 5 2007–2011 Diesel
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BM50511 — Connecting Pipe
2-year warranty Fitting kit included €92.99TDi Manual Cabrio (ASB engine; cat to l/pipe)Euro 4 2006–2009 Diesel For engine code ASB -
BM50512 — Connecting Pipe
2-year warranty Fitting kit included €177.99Listed for left-hand-drive vehicles only. Most Irish-registered vehicles are right-hand drive: check yours before you buy.TDi Quattro (CKVB; CKVC eng; LHD; to )Euro 6 2013–2015 Diesel For engine code CKVC -
BM91086 — Petrol Cat
2-year warranty Fitting kit included €184.99V6 Quattro Auto Saloon (ASN eng) left sideEuro 2 2001–2001 Petrol For engine code ASN -
BM91086H — Homologated Petrol Cat 2-year warranty Fitting kit included €269.99V6 Quattro Auto Cabriolet (ASN eng) left sideEuro 3 2003–2005 Petrol Type approved For engine code ASN
See all 17 parts for the Audi A4 3.0 →
About the Audi A4
Our catalogue covers diesel and petrol versions of the Audi A4 built from 1994 onwards, with 1.6, 1.8, 1.9, 2.0, 2.4, 2.5, 2.6, 2.7, 2.8 and 3.0-litre engines catalogued. 90 parts are listed for the range, including catalytic converters, DPFs, combined cat and DPF units, exhaust pipes and pressure pipes — each matched to a specific engine and model year.