Denso 210-1274 Alternator

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• BMW 12-31-7-853-781
• BMW 12317853781

• DENSO alternators are not only original equipment on many of the world's top production cars; they are a favorite in motorsports as well, where their light weight, high efficiency, and durability under the most demanding conditions make them the natural choice. Remanufactured DENSO alternators go through a grueling process. Stators and rectifiers are tested to 300 volts, while rotors are submitted to 600 volts, all to ensure reliable performance. Rotor slip rings are buffed to an 8 micron surface finish, with runout limited to 20 microns, minimizing brush wear and abrasion. Bearings are validated to OE standards and loaded with premium OE standard lubricants. New or remanufactured, a DENSO alternator is a quality component. Offered in versions from 40 to
• Bearing €“ 100% tested to OE standards.
• Designed to meet grueling heat and electrical requirements
• First Time Fit provides perfect mounting with no belt/pulley alignment issues
• Hardware €“ 100% stripped and replated.
• Housing €“ Re-tapped to OE standards and damage-checked for heat warping, corrosion, or improper surface alignment.
• Premium cores and precise OE assembly benchmarks
• Rectifier €“ Performance tested to 300 volts.
• Rotor €“ Performance and insulation tested to 600 volts.
• Slip Ring €“ Re-machined to an average of 8 microns (20 micron run-out maximum).
• Stator €“ Insulation tested to 600 volts.
• Voltage Regulator €“ 100% voltage tested to OE standards.