O-ring. Used in the thermostat on Mk2 Golf and Polo models and used in the air filter on T4 models

To fit engine codes:
Mk2 Golf and Polo - thermostat seal
1.05 AAK
1.05 HZ
1.05 ACM
1.05 AAU
1.3 AAV
1.3 MH
1.3 NU
1.3 NZ
1.3 PY
1.3 2G
1.3 3F
1.4 ABD
1.6 ABU

T25 from chassis 24-G-000 001>> - thermostat seal
1.9 DG
1.9 SP
2.1 MV
2.1 DJ
2.1 SR
2.1 SS

T4 - O-ring for air filter and turbo
2.5 Diesel ACV
2.5 Diesel ACV
2.5 Diesel AJT