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MDA3927 - High Output Alternator

  • Front Dim Drawing
    MDA3927 Front Dim Drawing
  • Rear Dim Drawing
    MDA3927 Rear Dim Drawing
  • Side Dim Drawing
    MDA3927 Side Dim Drawing
  • Output Curve
    MDA3927 Output Curve
  • Wiring Diagram
    MDA3927 Wiring Diagram
Product Specifications
Spec Value
Item number MDA3927
Sales number N/A
Series number MDA/P
Special Note Conditions Of Usage
Warning: Prestolite Products are not approved for Aviation applications!
System voltage 24
Output 80
Mounting style J-180
Dimensions in MILLIMETERS
Housing coating E-COAT
UL Approved No
Positive stud size M8
Negative stud size M6
Rectifier location INTEGRAL
Shaft diameter 7/8 INCH
Excitation type Self Excite
Regulator location Integral
Regulator number 8RG3081
Diode trio No
Pulley required No
Lamp driver Yes
Adjustable regulator No
Remote sense Yes
Smart check No
Batteryless No
Private Brand
This product is not available to the general aftermarket. Please contact a distributor near you or contact us for more information
Similar Product
Although this is a private branded unit, we have another model that is equivalent to MDA3927
Region Priority / Status
USA / Canada High (A)
United Kingdom / Europe Limited (W)
Product status
Status Number
Equivalent to MDA3929
Technical Bulletins
Title / Link Description
MDA-MDP Hardware Kit Hardware Kit for the MDA-MDP series alternators service parts
TSB-3019_MDA-MDP_Hardware.pdf (698 kb)
MDA3927 and MDA 3929 Wiring Diagram Wiring diagram for MDA3927 and MDA3929
TSB-1136_MDA3927-3929-wiring.pdf (222 kb)
Remote regulator conversion for MDA-MDP models This TSB covers the procedure for converting an internal regulated alternator to use an external regulator.
TSB-1116_MDA_MDP remote reg conversion.pdf (1.3 mb)
Parts Breakdown
Title / Link Description
MDA-MDP service parts list SP1018 service parts list for MDA/MDP alternators
SP1018_MDA-MDP_parts_list_web.pdf (1.4 mb)
Other Numbers We Use
Type Number
National stocking number 6115-01-524-5719
Numbers Our Customers Use
CompanyPart number
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