Keihin Original Main Jet for Keihin PWK/PWM/PE/PJ Carburetors, Size 188

This Keihin main jet is an original Keihin part, designed for PWK, PWM, PE, and PJ carburetor models. With a size of 188, it delivers the reliable fuel supply needed for precise tuning and consistent performance in off-road and motorsport applications.

• OEM-quality size: Main jet size 188, designed as a direct replacement for Keihin PWK, PWM, PE, and PJ carburetors.
• Compatibility: Fits Keihin PWK, PWM, PE, and PJ carburetors; ideal for riders who want to maintain reliable tuning across a variety of riding conditions.
• Dimensions and thread measurements: Total length approx. 16.5 mm; thread length approx. 5.0 mm; body length approx. 11.5 mm; nut width across flats approx. 6.0 mm.
• Material and precision: Made from brass for stable fuel flow and long-lasting reliability; manufactured with careful attention to precise orifice and channel dimensions.
• Reference code: MPN JU-99101-357-1880 for clear identification and compatibility checking.

With this main jet, you’ll optimize the air-fuel ratio for optimal engine response and consistent performance across different RPM ranges and conditions. The precise size 188 helps maintain reliable starting and smooth throttle response, while the Keihin OEM brand gives you confidence that your carburetor will receive the precision and reliability intended by the manufacturer. Suitable for both recreational and sport riders looking for a direct, reliable replacement without compromise.