Multiquip C3138000003 Field Assembly Exciter

The Multiquip C3138000003 Field Assembly Exciter is a genuine OEM component designed for DCA300SS and DCA400SS series ultra-silent diesel generators, including models DCA300SSC, DCA300SSCU, DCA300SSJU4F2, DCA300SSJU4F3, DCA400SSI, DCA400SSI4F3B. As a direct Multiquip OEM part, C3138000003 is manufactured to the same specification as the original component installed at the factory, ensuring correct electrical output and a drop-in installation with no guesswork. This part is confirmed to fit a wide range of DCA-series generator models across multiple Tier 4 and standard configurations, making it a dependable choice for fleet operators and service technicians managing large-frame generator assets.

Key Features

• Correct Electrical Output Specification — Manufactured to OEM spec for precise excitation voltage and field winding characteristics specific to DCA300SS and DCA400SS alternator systems.
• Direct Drop-In Installation — Engineered as an exact physical and electrical match to the original exciter assembly, connecting directly to the existing alternator housing without alteration.
• Broad DCA-Series Fitment — Covers DCA300SSC, DCA300SSCU, DCA300SSJU4F, DCA400SSI, DCA400SSK, DCA400SSV, DCA-300SSK, and related Tier 4 variants including 4F, 4F3, and 4F3PD configurations.
• Stable Generator Output — A healthy field assembly exciter maintains steady voltage regulation across load changes; a failed or degraded exciter causes fluctuating or lost AC output, taking the generator offline.
• Genuine Multiquip OEM Part — Sourced directly from Multiquip, carrying full OEM traceability and verified under part number C3138000003 for accuracy before dispatch.

The field assembly exciter is a core component of the generator's alternator system. It produces the initial magnetic field current needed to energize the main rotor windings, which in turn generates the AC power output the machine delivers to connected equipment. Without a properly functioning exciter, the alternator cannot build voltage, resulting in a generator that runs but produces no usable electrical output. Over time, heat cycling and operational load can degrade the exciter windings or insulation, making timely replacement critical to restoring and maintaining consistent power generation on the jobsite.

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.