Diaphragm carburetor membrane compatible with various motorcycle models including KLE400, EN400, EN450, KLE500, ER500, PZ500, GPX750, GPZ900, VN700, VN800, and others.Matches OEM numbers 16126-1173 and 16126-1130.Designed for use on specific engine types across model years from 1985 to 2009.Fits models such as EN400 from 1985–1995, EN450 Ltd from 1985–1989, EN500A from 1990–1996, ER500 Twister from 1997–2006, EX-4 ER500 from 1994–1998, GPX750 R ZX750F from 1987–1988, GPZ1100 E ZXT10E from 1998, PZ500R ZXT10E from 1987–2009, GPZ500 S EX500A EX500D EX500DE from 1987–2007, GPZ900 R ZX900A from 1990–1994, KLE400 ZX900A from 1991–1996, KLE500 A LE500A from 1991–2004, KLE500 B LE500AB from 2005–2007, VN700 from 1985, VN750 VN750A from 1986–2006, VN800 A VN800A from 1995–1998, VN800 B Classic VN800B VN800AB from 1996–2006, VN800 C Drifter VN800CC from 1999–2000, VN800 E Drifter VN800CE from 2001–2003, and ZL1000 A Eliminator ZLT00A from 1987–1988.Part is intended for diaphragm carburetor replacement and functions as a direct fit for specified applications.