... Z170F/4HP/2600rpmWater pump model: 3 inch (B80-80-125Z)2, Diesel engine model: Z175F/5HP/2600rpmWater pump ... model: 3 inch (B80-80-125Z) or 4 inch (B100-100-125Z)3, Diesel engine model: R170A ... /4HP/2600rpmWater pump model: 3 inch (B80-80-125Z)4, Diesel engine model: ZR175/6HP/2600rpmWater pump ... model: 4 inch (B100-100-125Z)5, Diesel engine model: ZR180/7HP/2600rpmWater ...