Multiquip B3137000803 Field Assembly Exciter

The Multiquip B3137000803 Field Assembly Exciter is a genuine OEM component designed for DCA and MQP series super-silent, ultra-silent, and diesel-powered generators, including the DCA36SPXU4F, DCA45SSIU4F, DCA70SSIU4F, DCA70SSJU4F, DCA70USI2, MQP56, and related variants. As a direct OEM part, it meets the exact electrical and mechanical specifications of the original exciter assembly installed at the factory, ensuring your generator output remains stable and within spec. This part fits an extensive range of DCA-series units across multiple production runs and configurations, making it a reliable solution for fleet operators, rental companies, and service technicians working on Multiquip generator equipment. Confirm your model code before ordering to ensure proper application.

Key Features

• Genuine OEM Exciter Windings — Wound to the original electrical specification for correct voltage output and excitation response across all listed DCA and MQP generator models.
• Direct-Fit Replacement Assembly — Engineered to install into the alternator housing the same way as the original, with matching mounting points and electrical terminations for a clean service swap.
• Broad DCA and MQP Series Compatibility — Fits DCA36, DCA40, DCA45, and DCA70 super-silent and ultra-silent variants, as well as MQP56 standby generator configurations.
• Stable Voltage Regulation — A properly functioning exciter field assembly maintains consistent AC output voltage; a worn or failed exciter causes voltage fluctuation, underperformance, or complete loss of power generation.
• Electrical Safety Compliance — As a generator alternator component, using a correctly rated OEM exciter assembly is critical to maintaining safe output characteristics and protecting connected loads from irregular voltage.

The field assembly exciter is a core winding component within the alternator section of a generator set. It generates the magnetic field necessary to induce voltage in the main stator windings, which is what ultimately produces usable AC power output. When the exciter field assembly degrades, becomes shorted, or fails entirely, the generator will produce little to no output voltage, making prompt replacement essential to restoring full power generation capability.

For questions about fitment or to confirm compatibility with your specific unit, contact the DHS Equipment parts team directly.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.