STANDARD V BELTS Instructions I Standard Belt Size Chart A Can be used if the size and or belt code is known 1 e Belt Length Code 3 8 380 32 50 AR 9433718 II Standard V Belt Codee and Numbers A Alpha numer1c order B Can be used if 2 letter code ia known i e EG 9433702 III Model Usage Chart A This chart can be used by determining the belt required i e Power Strg Fan Gen etc After getting to T correct belt section then locate model application following across the page tc the correct Engine VIN code C I D and or Engine Option number This will give the 2 letter code for Standard Belts refer back to the correct alpha numeric code chart and locate the service number of the belt needed g 1991 GENERALMOTORSSERWCEPARTSOPEHAUONS 4TTRUCK 52G 1 91 1 7 1 066