ANNHOO999 Ignition Switch 6665606 for Bobcat Skid Steer & Mini Track Loaders - 4-Position, Includes 2 Keys

ANNHOO999 6665606 is a 4-position ignition switch (MPN: 6665606 D250) supplied with two keys, built to replace the starter switch on a wide range of Bobcat skid steers, mini track loaders and select excavators.

This heavy-duty replacement ignition switch fits many legacy and current Bobcat models plus related equipment from other manufacturers that share cross-reference numbers. Designed to match the electrical and mounting footprint of OEM switches, it offers a direct swap for machines that use the 4-stud connector pattern and Pollak-style cylinder. The package includes the keyed switch and two matching keys so you can get back to work quickly.

Which machines will this ignition switch fit?

The ANNHOO999 6665606 switch covers an extensive list of Bobcat models from small loaders to larger track machines and several excavators. It is also cross-referenced to part numbers used by other brands, making it useful for mixed fleets.

• Bobcat skid steers: 440, 443, 453, 463, 530, 533, 540, 542, 543, 553
• Bobcat loaders and track loaders: 630, 631, 632, 641–653, 730–775 series, 843–963
• Mini track loaders: MT50, MT52, MT55; Track loader: 864; Excavators: 313, 310, 319–323, E16
• Cross-reference numbers: MG641833 (John Deere), S.68213 (Sparex), 9103-3317 (Gradall), 641833 (New Holland), 31-527 (Pollak), 1219 (Vermeer)

How easy is it to install and replace the original switch?

Installation is straightforward when the machine uses the same four-stud electrical connection and mounting pattern as the original switch. The switch is designed for a direct mechanical and electrical replacement with basic tools and minimal downtime.

• Includes two keys and the ignition cylinder for immediate use
• Matches 4-stud terminal layout for simple plug-and-play wiring
• No special programming or pairing required—mechanical replacement only
• Typical swap time: often under 30 minutes for experienced technicians

What are the switch’s key features and specifications?

This replacement unit is a 4-position ignition switch built to meet the electrical and durability needs of compact construction equipment. The design mirrors OEM form and function so it performs consistently under normal operating conditions.

• Manufacturer part number: 6665606 D250 (4 Position Ignition Switch, 4 Studs)
• Package contents: ignition switch plus two matching keys
• Works with multiple OEM cross-reference numbers for compatibility
• Durable housing intended for equipment duty cycles and vibration

Will this switch work with mixed-brand fleets and spare parts lists?

Yes—this switch’s cross-reference listings make it a practical spare for fleets that run Bobcat alongside other manufacturers. Checking the vehicle’s existing part number or the stud terminal layout ensures correct matching before purchase.

• Useful for shops maintaining Bobcat, John Deere, New Holland, Gradall, Vermeer and other machines
• Identify compatibility by comparing MPNs and the 4-stud connector layout
• Works as a direct replacement for many Pollak-style cylinders (31-527)
• Ships with keys to avoid immediate rekeying or downtime

Who is this for: Operators, service technicians, and maintenance managers who need a reliable, drop-in ignition switch for Bobcat skid steers, mini track loaders, select track loaders and excavators. It’s ideal for repair shops and fleet owners who require a cost-effective replacement that matches common OEM specs and cross-reference numbers, and for anyone who prefers to keep a ready spare on-hand to minimize equipment downtime.