Product Details Engine camshaft timing belt. Note: Semicircular profile belt. Its generally recommend to change the cam belt at every 100,000 klm's. Take note of all the idler and tension pulleys as they can get noisy and loose and the cam and crank seals for possible oil leaks, because now is the time to replace if needed. Number of Teeth: 127 Made in EEC Part Number(s) 11311711081 11311713361 11311469240 11311286168 11311272384 ZRK 1010 Brand Part Use Series Model Body Year(s) 3' E21 320 M20 Sedan All 3' E21 323i Sedan All 3' E30 320i Convertible All 3' E30 320i Coupe All 3' E30 320i Sedan All 3' E30 323i Coupe All 3' E30 323i Sedan All 3' E30 325e Coupe All 3' E30 325e Sedan All 3' E30 325i Coupe All 3' E30 325i Sedan All 5' E12 520 M20 Sedan All 5' E28 520i Sedan All 5' E28 525e Sedan All 5' E34 520i M20 Sedan All 5' E34 525i M20 Sedan All