Multiquip 8171020504 Insulator Washer

The Multiquip 8171020504 is a genuine OEM Insulator Washer designed for DCA-series super-silent and ultra-silent diesel generator models including the DCA220SSK, DCA800SSK2, DCA400SPK, DCA500SSK, DCA600SSK, DCA600SSV, and DCA600SSV4F3B families. As an authentic Multiquip OEM component, it is manufactured to the exact material and dimensional specifications required by these generator platforms. Sourcing the correct insulator washer by part number ensures proper electrical isolation and a drop-in fit with no adaptation needed. DHS Equipment stocks this part for the full range of compatible DCA generator models listed above.

Key Features

• Genuine OEM Electrical Isolation — Manufactured to Multiquip's exact dielectric material spec, ensuring correct insulating properties for the generator's electrical assembly.
• Direct-Fit Replacement — Matches the original washer's diameter, thickness, and bore so it seats correctly in the same mounting position without rework.
• Broad DCA Generator Compatibility — Fits DCA220SSK, DCA800SSK, DCA800SSK2, DCA400SPK, DCA500SSK, DCA600SSK, DCA600SSV, DCA600SSV4F3B, DCA600SSV4F3PB, and GEER-variant models.
• Prevents Electrical Faults — A worn or cracked insulator washer can allow unwanted current paths and ground faults; replacing it promptly protects sensitive generator components.
• Electrical Safety Compliance — Correct insulation between conductive fasteners and generator housing is critical to safe generator operation and personnel protection on the jobsite.

An insulator washer is a non-conductive spacer placed between a metal fastener or conductor and the surrounding structure to prevent electrical current from passing through unintended paths. In a diesel generator, these washers are used at key connection points to isolate live components from the frame or housing, maintaining the integrity of the electrical circuit and protecting against shorts and ground faults. When an insulator washer degrades, cracks, or deforms, it can compromise electrical isolation and lead to intermittent faults, erratic output, or damage to the generator's alternator or control systems.

For help confirming this part fits your specific DCA generator serial number or configuration, contact the DHS Equipment 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.