2 CV, 3 CV. NBR (nitrile butadiene rubber). Original (OEM) codes. M28/1 (AK2). 0.6l, 24kw, 33hp, Petrol Engine. 1972.05 - 1980.12. A79/0 (AYA). 0.4l, 13kw, 18hp, Petrol Engine.
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