17.5mm for Piaggio NRG50 Typoon50 XR Vespa LX50 Aprilia Gilera Storm 50 with E-Choke Gilera Runner Carburetor Sturdy and wearable; Extremely sharp; Fine ductile; Long service life ; Inner Diameter (intake side): Approx 17.5mm; Outer Diameter (intake side): Approx 23mm; Diameter (air filter side): Approx 37.4mm For models: for Aprilia Mojito Custom 50 (Piaggio engine); for Aprilia Sportcity ONE 50 (2-stroke); for Aprilia Sportcity Street 50 (2-stroke); for Aprilia SR 50 Funmaster LC (from 03/2003) (Piaggio engine); for Aprilia SR 50 Street LC (water) (Piaggio engine); for Aprilia SR 50 R LC (water) (from 2005) (Piaggio engine); for Aprilia SR 50 Racing LC (water) (from 07/2003) (Piaggio engine); for Aprilia SR 50 Sport LC (water) (from 07/2003) (Piaggio-Motor-DiTech) for Derbi Atlantis 50 AC (air) (from 06/2002) (Piaggio engine); for Derbi Atlantis 50 LC (water) (from 06/2002) (Piaggio engine); for Derbi Boulevard 50; for Derbi Bullet 50; for Derbi GP1 50; for Derbi GP1 50; for Derbi GP1 50 Revolution; for Gilera DNA 50; for Gilera Easy Moving 50; for Gilera Ice 50; for Gilera Runner 50 DT (until 1999); for Gilera Runner 50 (YOC 1999-2000); for Gilera Runner 50 (Bj. 2004-08/2005); for Gilera Runner 50 (YOC 2001-2004) for Gilera Runner 50 SP (from 08/2005) (C46100); for Gilera Stalker 50 (from 1999); for Gilera Stalker 50 (until 1999); for Gilera Stalker Naked 50; for Gilera Storm 50 (from 2007); for Gilera Storm 50 (until 1999); for Gilera Typhoon 50; for Gilera Typhoon-X 50; for Italjet Jet-Set 50 (2-stroke); for Italjet Torpedo 50 (Piaggio engine); for Piaggio Diesis 50; for Piaggio Fly 50 (2-stroke) for Piaggio Free 50 (from year 1999); for Piaggio Free 50 (until 1999); for Piaggio Liberty 50 (2-stroke); for Piaggio NRG 50 LC (water) (SAL1T); for Piaggio NRG 50 MC2 LC (water) (C04); for Piaggio NRG 50 LC (water) (SAL1T); for Piaggio NRG 50 MC2 LC (water) (C04); for Piaggio NRG 50 Extreme AC (air) (C21); for Piaggio NRG 50 Extreme LC (water) (C22); for Piaggio NRG 50 MC3 LC (water) (C320000); for Piaggio NRG 50 MC3 AC (air) (C31); for Piaggio NRG 50 Power LC (water) (C45100) for Piaggio NRG 50 Power AC (air) (C45300) for Piaggio NTT 50 for Piaggio Quartz 50 for Piaggio Vespa S 50 (2-stroke) for Piaggio Sfera Restyling 50 (C01) for Piaggio Storm 50 for Piaggio Typhoon 50 (C48) (from 2010) for Piaggio Typhoon 50 (TEC1T) for Piaggio Typhoon 50 X (TEC2T) for Piaggio Typhoon 50 XR (C19 / C29) for Piaggio Typhoon 50 X (TEC2T) for Piaggio Zip 2 50 (2-stroke) for Piaggio Zip 2 SP 50 LC (water) for Piaggio Zip Base 50 (from year 1999) for Piaggio Zip SSL 25 (up to 1999) for Piaggio Zip Fast Rider 50 for Piaggio Zip SP 50 H2O for Piaggio Zip SSL 25 (from year 1999) for Piaggio Zip SSL 25 (up to 1999) for Piaggio Vespa ET2 50 (2-stroke) for Piaggio Vespa ET2 50 (2-stroke) for Piaggio Vespa LX 50 (2-stroke) for Piaggio Vespa LXV 50 (2-stroke) for Piaggio Vespa S 50 (2-stroke) for Piaggio Vespa S Sport 50 colour: black and silver Material: metal Package Contents: 1 x carburetor Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.