The listing contains 4 carburetor vacuum diaphragms.For K&awasaki For Ninja ZX6R ZX6R G1 G2 J1 J2 J3 1998 1999 2000 2001 2002 Greatly improved wear resistance, high temperature impact resistance, strong and stable Direct replacement, remove the worn and old parts, can be repaired by matching the parts that need to be replaced, and install the new one directly. Designed to withstand the extreme temperatures, pressures and vibrations of motorcycle engines, providing long-term, reliable service. Anti-Loosening Design: Ensures a tight fit, reducing the need for frequent re-tightening.