Any purchase return made without verification of the vehicle's chassis number will be fully the responsibility of the buyer. 8:00 am - 6:00 pm Monday to Friday 8:00 am - 12:00 pm Saturday. BEFORE AND AFTER SALES SUPPORT LINE. NPR PIÈCES NEUFS RICAMBI Srl. MAINTENANCE KIT WITH OIL Coupon kit composed of.5 packs of 1kg Castrol oil Cartridge oil filter. Outer diameter [mm]: 76 Inner diameter [mm]: 34 Fuel filter with pressure regulator.