The Virtionz Ignition Switch includes a Key & lock washer nut/cover. It has a 7 post ignition switch which is a perfect replacement for Craftsman, Husqvarna, Poulan, Briggs & Stratton, MTD & Murray. This switch is compatible and will replace the following: 334013B, Craftsman/Husqvarna/Poulan OEM Numbers 140301, 532140301; Briggs & Stratton OEM no. 5412H, 5412K; MTD OEM no. 725-1717, 9251717; Murray OEM no. 92556 for engines equipped with a fuel shut-off solenoid. SAFETY-Move key in complete OFF position before taking it out , key can get stuck if not in complete OFF position Fits the following models and others not listed: · 425615x99A - Lawn Tractor (2004)-->Electrical System · 536.270290 - Craftsman Mid-Engine Rider (2004)-->Electrical System · 385021x53A - Lawn Tractor (2004)-->Electrical System · 38515x92B - Lawn Tractor (1998)-->Electrical System · 387003x8A - Lawn Tractor (2004)-->Electrical System · 38716x82A - Lawn Tractor (1999)-->Electrical System · 405000x31B - Lawn Tractor (2004)-->Electrical System · 405000x8C - Lawn Tractor (2004)-->Electrical System · 405001x78B - Lawn Tractor (2004)-->Electrical System · 405007x18A - Lawn Tractor (2003)-->Electrical System · 405007x18B - Lawn Tractor (2004)-->Electrical System · 405012x108A - Lawn Tractor (2005)-->Electrical System · 405012x78A - Lawn Tractor (2004)-->Electrical System · 405014x92A - Lawn Tractor (2001)-->Electrical System · 405014x92A - Lawn Tractor (2002)-->Electrical System · 405015x92A - Lawn Tractor (2002)-->Electrical System · 405015x92B - Lawn Tractor (2002)-->Electrical System · 405017x78A - Lawn Tractor (2005)-->Electrical System · 405017x78B - Lawn Tractor (2005)-->Electrical System · 40509x92A - Lawn Tractor (2000)-->Electrical System · 40530x192A - Lawn Tractor (1997)-->Electrical System · 40530x51A - Lawn Tractor (1997)-->Electrical System · 40530x51B - Lawn Tractor (1999)-->Electrical System · 40530x51C - Lawn Tractor (2000)-->Electrical System · 40530x83A - Law