Atwood Water Heater Replacement Parts - Circuit Board. For GCH6A-10E, GC6AA-10E, GC10A-4E and GCH10A-4E. Gas/Electric Water Heaters 91365 replaces 93851. OEM Names and Numbers used for Reference Only. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Fireplace & Stove Replacement Parts".The seller is "mnrparts" and is located in this country: US. This item can be shipped worldwide.