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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

 BVRAudi TT
05-06
190
230
 NY
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

 
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