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Audi A4 Catalytic Converters & DPFs

Select your engine size to see the parts catalogued for your Audi A4.

Look up the parts for your vehicle by reg plate

Audi A4 1.6

  • BM70152 — Front Pipe Exhaust Front Pipe for Audi A4 1.6 – BM70152
    2-year warranty Fitting kit included £56.66 ex VAT (£67.99 inc VAT)
  • BM90391 — Petrol Cat Catalytic Converter for Audi A4 1.6 – BM90391
    2-year warranty Fitting kit included £87.49 ex VAT (£104.99 inc VAT)
    (AHL eng) F/pipe & cat
  • BM90391H — Homologated Petrol Cat Catalytic Converter for Audi A4 1.6 – BM90391H
    2-year warranty Fitting kit included £120.83 ex VAT (£144.99 inc VAT)
    (AHL eng) F/pipe & cat
  • BM90423 — Petrol Cat Catalytic Converter for Audi A4 1.6 – BM90423
    2-year warranty Fitting kit included £43.33 ex VAT (£51.99 inc VAT)
    Cat Only
  • BM90423H — Homologated Petrol Cat Catalytic Converter for Audi A4 1.6 – BM90423H
    2-year warranty Fitting kit included £109.99 ex VAT (£131.99 inc VAT)
    Cat Only
  • BM90954 — Petrol Cat Catalytic Converter for Audi A4 1.6 – BM90954
    2-year warranty Fitting kit included £84.16 ex VAT (£100.99 inc VAT)
    ALZ eng (with OBD)

See all 7 parts for the Audi A4 1.6 →

Audi A4 1.8

  • BM50075 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.8 – BM50075
    2-year warranty Fitting kit included £42.49 ex VAT (£50.99 inc VAT)
    20v Turbo Manual (AJL engine)
  • BM50082 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.8 – BM50082
    2-year warranty Fitting kit included £47.49 ex VAT (£56.99 inc VAT)
    20v Turbo Quattro
  • BM50485 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.8 – BM50485
    2-year warranty Fitting kit included £41.66 ex VAT (£49.99 inc VAT)
    Turbo 5-speed Manual (BFB; BEX cn 8E-4-000 001 on)
  • BM70152 — Front Pipe Exhaust Front Pipe for Audi A4 1.8 – BM70152
    2-year warranty Fitting kit included £56.66 ex VAT (£67.99 inc VAT)
    20v Non Turbo (AFY; ADR eng)
  • BM70614 — Front Pipe Exhaust Front Pipe for Audi A4 1.8 – BM70614
    2-year warranty Fitting kit included £59.99 ex VAT (£71.99 inc VAT)
    20v Turbo (APU; ARK; ANB engines)
  • BM90132 — Petrol Cat Catalytic Converter for Audi A4 1.8 – BM90132
    2-year warranty Fitting kit included £42.49 ex VAT (£50.99 inc VAT)

See all 18 parts for the Audi A4 1.8 →

Audi A4 1.9

  • BM11032 — DPF DPF for Audi A4 1.9 – BM11032
    2-year warranty Fitting kit included £224.16 ex VAT (£268.99 inc VAT)
  • BM11032P — DPF — Premium (SiC) DPF for Audi A4 1.9 – BM11032P
    3-year warranty Fitting kit included £294.16 ex VAT (£352.99 inc VAT)
  • BM50013 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.9 – BM50013
    2-year warranty Fitting kit included £30.83 ex VAT (£36.99 inc VAT)
    TDi 110bhp (AFN AVG engine)
  • BM50076 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.9 – BM50076
    2-year warranty Fitting kit included £32.49 ex VAT (£38.99 inc VAT)
    TDi 90bhp (1Z; AHU eng)
  • BM50325 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 1.9 – BM50325
    2-year warranty Fitting kit included £46.66 ex VAT (£55.99 inc VAT)
    TDi (BRB engine; models)
  • BM80003 — Diesel Cat Catalytic Converter for Audi A4 1.9 – BM80003
    2-year warranty Fitting kit included £65.83 ex VAT (£78.99 inc VAT)

See all 14 parts for the Audi A4 1.9 →

Audi A4 2.0

  • BM11032 — DPF DPF for Audi A4 2.0 – BM11032
    2-year warranty Fitting kit included £224.16 ex VAT (£268.99 inc VAT)
    TDI (BNA; BRF engine)
  • BM11032P — DPF — Premium (SiC) DPF for Audi A4 2.0 – BM11032P
    3-year warranty Fitting kit included £294.16 ex VAT (£352.99 inc VAT)
    TDI (BNA; BRF engine)
  • BM11054H — Homologated Diesel Cat & DPF Catalytic Converter & DPF for Audi A4 2.0 – BM11054H
    2-year warranty Fitting kit included £186.66 ex VAT (£223.99 inc VAT)
    TDi Estate (CAGA; CAGB engines; cat/ comb)
  • BM11054HP — Homologated Diesel Cat & DPF — Premium (SiC) Catalytic Converter & DPF for Audi A4 2.0 – BM11054HP
    3-year warranty Fitting kit included £239.16 ex VAT (£286.99 inc VAT)
    TDi Estate (CAGA; CAGB engines; cat/ comb)
  • BM11386H — Homologated Diesel Cat & DPF Catalytic Converter & DPF for Audi A4 2.0 – BM11386H
    2-year warranty Fitting kit included £335.83 ex VAT (£402.99 inc VAT)
    TDi (CAGA; CJCA; CMEA; CJCA engs;cat/ combined)
  • BM31130H — Homologated Cat & sDPF Catalytic Converter & DPF for Audi A4 2.0 – BM31130H
    2-year warranty Fitting kit included £789.16 ex VAT (£946.99 inc VAT)

See all 22 parts for the Audi A4 2.0 →

Audi A4 2.4

  • BM90478 — Petrol Cat Catalytic Converter for Audi A4 2.4 – BM90478
    2-year warranty Fitting kit included £79.99 ex VAT (£95.99 inc VAT)
    V6 incl. Quattro (AJG;APZ engs; left hand;not OBD)
  • BM90478H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.4 – BM90478H
    2-year warranty Fitting kit included £118.33 ex VAT (£141.99 inc VAT)
    V6 incl Quattro(AGA;ALF;APS;ARJ left hand;not OBD)
  • BM90510 — Petrol Cat Catalytic Converter for Audi A4 2.4 – BM90510
    2-year warranty Fitting kit included £74.16 ex VAT (£88.99 inc VAT)
    V6 incl. Quattro (AJG;APZ eng; right hand;not OBD)
  • BM90510H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.4 – BM90510H
    2-year warranty Fitting kit included £172.49 ex VAT (£206.99 inc VAT)
    V6 incl. Quattro (AJG;APZ eng; right hand;not OBD)
  • BM91073 — Petrol Cat Catalytic Converter for Audi A4 2.4 – BM91073
    2-year warranty Fitting kit included £126.66 ex VAT (£151.99 inc VAT)
    V6 Mk.1 (AMM; AML engs; with OBD; left hand)
  • BM91073H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.4 – BM91073H
    2-year warranty Fitting kit included £317.49 ex VAT (£380.99 inc VAT)
    V6 Mk.1 (AMM; AML engs; with OBD; left hand)

See all 10 parts for the Audi A4 2.4 →

Audi A4 2.5

  • BM80064 — Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80064
    2-year warranty Fitting kit included £112.49 ex VAT (£134.99 inc VAT)
    TDi Quattro Manual (AKE engine; 2nd cat)
  • BM80064H — Homologated Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80064H
    2-year warranty Fitting kit included £154.99 ex VAT (£185.99 inc VAT)
    TDi Quattro Manual (AKE engine; 2nd cat)
  • BM80095 — Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80095
    2-year warranty Fitting kit included £66.66 ex VAT (£79.99 inc VAT)
    TDi (AKN; AFB engines)
  • BM80095H — Homologated Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80095H
    2-year warranty Fitting kit included £169.16 ex VAT (£202.99 inc VAT)
    TDi (AKN; AFB engines)
  • BM80332 — Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80332
    2-year warranty Fitting kit included £104.16 ex VAT (£124.99 inc VAT)
    TDi Quattro (AKE engine; 1st cat)
  • BM80332H — Homologated Diesel Cat Catalytic Converter for Audi A4 2.5 – BM80332H
    2-year warranty Fitting kit included £104.16 ex VAT (£124.99 inc VAT)
    TDi (AYM engine; 1st cat)

See all 7 parts for the Audi A4 2.5 →

Audi A4 2.6

  • BM70526 — Front Pipe Exhaust Front Pipe for Audi A4 2.6 – BM70526
    2-year warranty Fitting kit included £40.83 ex VAT (£48.99 inc VAT)
    V6 Manual (non-Quattro; ABC engine; left hand)
  • BM70527 — Front Pipe Exhaust Front Pipe for Audi A4 2.6 – BM70527
    2-year warranty Fitting kit included £60.83 ex VAT (£72.99 inc VAT)
    V6 Manual (non-Quattro; ABC engine; right hand)
  • BM90478 — Petrol Cat Catalytic Converter for Audi A4 2.6 – BM90478
    2-year warranty Fitting kit included £79.99 ex VAT (£95.99 inc VAT)
    V6 Quattro (ABC engine; left hand)
  • BM90478H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.6 – BM90478H
    2-year warranty Fitting kit included £118.33 ex VAT (£141.99 inc VAT)
    V6 Quattro (ABC engine; left hand)
  • BM90510 — Petrol Cat Catalytic Converter for Audi A4 2.6 – BM90510
    2-year warranty Fitting kit included £74.16 ex VAT (£88.99 inc VAT)
    V6 Quattro (ABC engine; right hand)
  • BM90510H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.6 – BM90510H
    2-year warranty Fitting kit included £172.49 ex VAT (£206.99 inc VAT)
    V6 Quattro (ABC engine; right hand)

See all 7 parts for the Audi A4 2.6 →

Audi A4 2.7

  • BM11192H — Homologated Diesel Cat & DPF Catalytic Converter & DPF for Audi A4 2.7 – BM11192H
    2-year warranty Fitting kit included £291.66 ex VAT (£349.99 inc VAT)
  • BM50496 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 2.7 – BM50496
    2-year warranty Fitting kit included £109.99 ex VAT (£131.99 inc VAT)
  • PP11192A — Pressure Pipe DPF Pressure Pipe for Audi A4 2.7 – PP11192A
    2-year warranty £45.83 ex VAT (£54.99 inc VAT)

More about the Audi A4 2.7 →

Audi A4 2.8

  • BM70526 — Front Pipe Exhaust Front Pipe for Audi A4 2.8 – BM70526
    2-year warranty Fitting kit included £40.83 ex VAT (£48.99 inc VAT)
    V6 Manual (non-Quattro; AAH engine; left hand)
  • BM70527 — Front Pipe Exhaust Front Pipe for Audi A4 2.8 – BM70527
    2-year warranty Fitting kit included £60.83 ex VAT (£72.99 inc VAT)
    V6 Manual (non-Quattro; AAH engine; right hand)
  • BM90478 — Petrol Cat Catalytic Converter for Audi A4 2.8 – BM90478
    2-year warranty Fitting kit included £79.99 ex VAT (£95.99 inc VAT)
    V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; left hand)
  • BM90478H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.8 – BM90478H
    2-year warranty Fitting kit included £118.33 ex VAT (£141.99 inc VAT)
    V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; left hand)
  • BM90510 — Petrol Cat Catalytic Converter for Audi A4 2.8 – BM90510
    2-year warranty Fitting kit included £74.16 ex VAT (£88.99 inc VAT)
    V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; right hand)
  • BM90510H — Homologated Petrol Cat Catalytic Converter for Audi A4 2.8 – BM90510H
    2-year warranty Fitting kit included £172.49 ex VAT (£206.99 inc VAT)
    V6 inc.Quattro(ACK;AHA;ALG;APR;AQD; right hand)

See all 11 parts for the Audi A4 2.8 →

Audi A4 3.0

  • BM11192H — Homologated Diesel Cat & DPF Catalytic Converter & DPF for Audi A4 3.0 – BM11192H
    2-year warranty Fitting kit included £291.66 ex VAT (£349.99 inc VAT)
  • BM50496 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 3.0 – BM50496
    2-year warranty Fitting kit included £109.99 ex VAT (£131.99 inc VAT)
    TDi 24v Quattro & 2WD
  • BM50511 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 3.0 – BM50511
    2-year warranty Fitting kit included £75.83 ex VAT (£90.99 inc VAT)
    TDi Manual Cabrio (ASB engine; cat to l/pipe)
  • BM50512 — Connecting Pipe Exhaust Connecting Pipe for Audi A4 3.0 – BM50512
    2-year warranty Fitting kit included £145.83 ex VAT (£174.99 inc VAT)
    Listed for left-hand-drive vehicles only. Most UK-registered vehicles are right-hand drive: check yours before you buy.TDi Quattro (CKVB; CKVC eng; LHD; to )
  • BM91086 — Petrol Cat Catalytic Converter for Audi A4 3.0 – BM91086
    2-year warranty Fitting kit included £151.66 ex VAT (£181.99 inc VAT)
    V6 Quattro Auto Saloon (ASN eng) left side
  • BM91086H — Homologated Petrol Cat Catalytic Converter for Audi A4 3.0 – BM91086H
    2-year warranty Fitting kit included £220.83 ex VAT (£264.99 inc VAT)
    V6 Quattro Auto Cabriolet (ASN eng) left side

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.