Product: 2-Way Fuel Valve Shutoff Petcock for Polaris Sportsman 400, 500, 600 Compatible Models and Years: 1999: Diesel Fuel Tank (A99CH45CA, A99CH45IA) 2000: Diesel Fuel Tank (A00CH46CA) 2001: Diesel Fuel Tank (A10CH46CA) 2004: Sportsman 400, 500, 600, 700 (various sub-models, including A04CH42AQ, A04CH50AQ, A04CH59AF, A04CH68AC) 2005: Sportsman 400, 500 HO-INTL, 600, 700 (various sub-models including A05MH42AB, A05MH50AB, A05MH59AK, A05MH68AK-AN-AD) Specifications: Thread Outer Diameter: 21mm (refer to photos for additional measurements) Features: standards Direct OEM replacement for seamless fit and reliable performance Part No.: 18-6099.FIR Cross Reference Number: 7052159 Assemblies Using Part Number 7052159: Applicable in various fuel systems and fuel tank assemblies across Polaris Diesel, Genesis, Freedom, Virage, and Sportsman models from 1997 to 2005