This is the Same as a 6449 (Automotive Applications) Except the CE Housing Does Not Have a Drain Hole, and Has a Zinc-Type Coating (as Does the Solenoid) For Corrosion Protection. The DE Frame is Exactly the Same as the 6449, and the Solenoid, at Least on the Core Seen, Had Only Three Terminals. The Gear Track is Plastic, Not Steel, as Other Marine PMGR Types May Be. The 6562 (9000821) is the Same as the 6560, Except Using a 4-Terminal Solenoid Switch,