Audi TT engine number placment / location/ Engine code meaning.

The engine number ("Engine code" and "Serial number") can be found at the front next to the join between engine and gearbox as shown in the diagram below:

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There is also a sticker on the cylinder head cover showing the engine code and serial number.

The engine code is also included on the vehicle data sticker.

Note:

The engine code is also stamped on the right lifting eye as shown in the photo below (engine cover removed):

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Code·····kW·····BHP····Litres····Cyl.····Mounting Time····Model
AJQ·······132·····180·······1.8········4······10/98-08/00·········Audi TT (8N)
APP·······132·····180·······1.8········4······09/99-09/00·········Audi TT (8N)
APP·······132·····180·······1.8········4······09/99-10/01·········Audi TT (8N)
APX·······165·····225·······1.8········4······10/98-08/01·········Audi TT (8N)
ARY·······132·····180·······1.8········4······09/00-05/05·········Audi TT (8N)
AUM······110·····150·······1.8········4······01/01-06/06·········Audi TT (8N)
AUQ······132·····180·······1.8········4······09/00-06/06·········Audi TT (8N)
BAM······165·····225·······1.8········4······07/01-08/02·········Audi TT (8N)
BAM······165·····225·······1.8········4······09/00-06/06·········Audi TT (8N)
BFV·······180·····245·······1.8········4······03/05-06/06·········Audi TT (8N)
BHE·······184·····250·······3.2········6······07/03-06/06·········Audi TT (8N)
BVR·······140·····190·······1.8········4······09/05-06/06·········Audi TT (8N)
BPF·······184·····250·······3.2········6······06/04-05/05·········Audi TT (8N)
BVP·······120·····163·······1.8········4······09/05-06/06·········Audi TT (8N)
BPY·······147·····200·······2.0········4······03/07-··················Audi TT (8J)
BUB·······184·····250·······3.2········6······08/06-·················Audi TT (8J)
BWA······147·····200·······2.0········4······08/06-·················Audi TT (8J)
CBBB·····125·····170·······2.0········4······06/08-·················Audi TT (8J) Coupe 2.0
CBBB·····125·····170·······2.0········4······06/08-·················Audi TT (8J) Roadster 2.0
CCZA·····147·····200·······2.0········4······06/08-·················Audi TT (8J) Coupe 2.0
CCZA·····147·····200·······2.0········4······06/08-·················Audi TT (8J) Roadster 2.0 Quattro
CDAA·····118·····160·······1.8········4······06/08-·················Audi TT (8J)
CDLA·····195·····265·······2.0········4······05/08-·················Audi TTS (8J) Coupe 2.0
CDLA·····195·····265·······2.0········4······05/08-·················Audi TTS (8J) Roadster 2.0
CDLB·····200·····272·······2.0········4······05/08-·················Audi TTS (8J) Coupe 2.0
CDLB·····200·····272·······2.0········4······05/08-·················Audi TTS (8J) Roadster 2.0

All these engine codes! Can you explain what they mean?

Below is a table of the most common 1.8T 20v engine codes: If you prefer, you can also view a chart of engine codes here  The engine code can be found stamped on the front of the cylinder head close to the camshaft position sensor. Please note that the longitudinally mounted engines require many modifcations to fit and are generally best avoided for transverse applications.  The only exception is the Mk1 see here Engine Code Application Model Years Std Power QPEng Power Big Port?  DBW Y/N? Mounted CR Turbo AEB Audi A4 1.8T Audi A6 1.8T VW Passat 1.8T 95-98 150 200 Y N Longitudinal 9.5:1 K03 APU Audi A4 1.8T Audi A6 1.8T VW Passat 1.8T 98-00 150 200  N Y Longitudinal 9.5:1 K03  AWT Audi A4 1.8T Audi A6 1.8T VW Passat 1.8T  00-02 150  200   N Y  Longitudinal  9.5:1  K03 AGU Golf GTi 1.8T Audi A3 1.8T Skoda Octavia 97-00 150 200 Y N Transverse 9.5:1 K03  AVJ Audi A4 1.8T 00-02 150 200  N Y Longitudinal 9.5:1 K03  ARZ Golf GTi 1.8T Audi A3 1.8T  Skoda Octavia   99-01  150 200  N Y Transverse 9.5:1 K03 APH/AVC VW Beetle 1.8T 99-00 150 200  N Y Transverse 9.5:1 K03 AUM/ARX Audi A3 1.8T Audi TT Skoda Octavia VW Golf Gti VW Bora 1.8T 00-05 150 230  N Y Transverse 9.5:1 K03s AWC VW Sharan 1.8T Seat Alhambra 1.8T  00-04 150 200  N Y Transverse 9.5:1 K03  BJX  Ibiza Sport/FR Polo GTi  04-08  150  230  N  Y  Transverse  9.5:1 K03s  AJH VW Sharan 1.8T  Seat Alhambra 1.8T   97-00  150  200  Y  N  Transverse  9.5:1  K03 AQX Seat Ibiza Cupra 99-00 155 200  N Y Transverse 9.5:1 K03 AYP Seat Ibiza Cupra 00-01 155 200  N Y Transverse 9.5:1 K03  BVP  Audi TT 05-06 163 230  N Y Transverse 9.5:1 K03s  BFB Audi A4 1.8T  04-07  163  200  N Y Longitudinal  9.5:1 K03s AJL Audi A4 1.8T Audi A6 1.8T 97-00 180 200  N N Longitudinal 9.5:1 K03 AJQ Audi A3 1.8T Audi TT Seat Leon Cupra 98-00 180 200  N Y Transverse 9.5:1 K03 APP Audi A3 Audi TT Seat Leon Cupra 99-00 180 200  N Y Transverse 9.5:1 K03 AUQ/ARY Audi A3 Audi TT Seat Leon Cupra Skoda Octavia RS VW Bora 1.8T VW Golf GTi 00-05 180 230  N Y Transverse 9.5:1 K03s BBU   Ibiza Cupra Polo GTi Cup   05-08 180 230  N Y Transverse 9.5:1 K03s BEX Audi A4 1.8T 02-03 190 200  N Y Longitudinal 9.5:1 K03s  BVR Audi TT  05-06  190  230   N Y  Transverse  9.5:1  K03s  APY Audi S3 98-01 210 270  N Y Transverse 9:1 K04 AMK Seat Leon Cupra R Audi S3  02-03 210 270  N Y Transverse 9:1 K04 APX Audi TT 98-00 225 270  N Y Transverse 9:1 K04 BAM Audi S3 Audi TT Seat Leon Cupra R 00-05 225 270  N Y Transverse 9:1 K04 BFV Audi TT Sport 05-06 240 270  N Y Transverse 9:1 K04