Smart Products for Your Boating Needs
  • Leece-Neville/Motorola 8MR Adjustable Voltage Regulator 105-280

    $98.64 $69.99

    ALL ORDERS USA SHIPPING ONLY

     Click Here For International Shipment Info

    This is a genuine Leece-Neville 8MR 105-280 / 8RG2043 adjustable internal regulator. Please don't be fooled by the Chinese imitations of this regulator where the adjuster pot corrodes/fails in a matter of months.

    This simple two stage, BULK & ABSORPTION regulator can be used to replace your existing alternators stock non-adjustable regulator for better charging performance. It can be adjusted from 13.6V to 15.1V or anywhere in-between. For a $20.00 fee we can preset this regulator to your desired voltage before it leaves our shop. We highly recommend this as turning the pot too far will ruin the regulator.

    This regulator will fit dual AC Tap, isolated ground, Leece-Neville, Motorola or Prestolite 8MR series alternators, as found on many marine engines, including Universal Diesel, Ford Lehman, Perkins etc.. This regulator will convert your existing alternator to "self excite". Installation is simple provided you have the right alternator.

    IMPORTANT: Your alternator must be an 8MR style with two AC / Stator taps for the two yellow wires and it must be isolated ground. Beware some of these alternators had a D+ terminal on the left side. Connecting to a D+ terminal will quickly fry the regulator.

    TIP: For increased voltage sensing performance the black and red regulator wires can be extended to the battery banks positive & negative terminals.


    WARNING: Regulator fits genuine Leece-Neville/Prestolite/Motorola 8MR alternators. Fit is not guaranteed on knock-off units.

    THERE IS NO GUARANTEE THIS KIT WILL FIT AN 8MR CLONE/KNOCK-OFF ALTERNATOR