Kindly quote best price, delivery cost and time to Singapore for following SAMPLES or to the closest equivalent.In your offer please indicate whether OEM or Genuine parts with country of Origin, (although preferred the economical price.)=SAMPLE=Spares for Main Engine, Port Maker: CATERPILLAR, Type: 3500 CP 9768 E U 01, S/No. TTD003871. TurboCharger Air Filter, P/no. 226-2779 ………….Qty. 4 nos.Your prompt reply is appreciated.