Procurement of Set of spares consisting of seven items for Low pressure cylinder head sub assembly of ELGI make water cooled air compressor of Model RR66101W in HHP Diesel Locomotives as details given below. ( 1 ) Valve plug LP SUC M/ C to ELGI Pt. No. 070311200- Qty. 02 Nos. ( 2 ) Valve plug LP DEL M/ C to ELGI Pt. No. 070304550- Qty. 02 Nos. ( 3 ) GRUB screw 5/ 8 inch UNC to ELGI Pt. No. 070404250- Qty. 03 Nos. ( 4 ) Housing unloader to ELGI Pt. No. 070304570- Qty. 03 Nos. ( 5 ) Bolt Hex 3/ 8 inch UNC x 1- 1/ 4 inch to ELGI Pt. No. 000907227- Qty. 09 Nos. ( 6 ) Piston unloader modified to ELGI Pt. No. 070410250- Qty. 03 Nos. ( 7 ) Plunger LP Unloader M/ D to ELGI Pt. No. 070311230- Qty. 02 Nos.