Multiquip 15600ZG4003 Oil Filler Cap Assembly

The Multiquip 15600ZG4003 is a genuine OEM Oil Filler Cap Assembly designed for an exceptionally wide range of Multiquip, Whiteman, Essick, and STOW equipment, including plate compactors in the MVC and MVH series, concrete and mortar mixers in the MC, WC, WM, and EM series, portable generators in the GA series, pumps, saws, power buggies, and walk-behind trowels. As a factory-direct OEM component, this cap assembly is sourced from the original manufacturer and meets the exact material and sealing standards of the part it replaces. Fitment covers a broad cross-section of Honda-powered Multiquip equipment — verify your model code before ordering to confirm compatibility. DHS Equipment stocks this part to keep your machine running without unnecessary wait time.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to the same specification as the original, ensuring a proper compression seal at the oil filler port to prevent leaks and contamination ingress.
• Direct-Fit Replacement — Engineered to thread and seat exactly as the original cap, requiring no reworking of the filler neck or surrounding hardware.
• Broad Cross-Equipment Compatibility — Fits MVC and MVH plate compactors, MC, WC, WM, and EM series mixers, GA series generators, QP and MQ series pumps, SP and CS series saws, and more — a single part number serving dozens of Honda-powered models.
• Protects Engine Oil from Contamination — A correctly seated oil filler cap keeps airborne debris, water, and concrete dust out of the crankcase; a cracked or missing cap accelerates engine wear and can cause catastrophic oil loss.
• Fuel and Fluid System Safety — Maintains correct crankcase pressure balance; a failed cap can disrupt pressure differentials, leading to oil blow-by and accelerated seal deterioration across the engine.

The oil filler cap assembly seals the engine's oil filler port, keeping the crankcase closed to outside contaminants while allowing safe access for routine oil checks and changes. On worksites where dust, moisture, and debris are constant, a degraded or missing cap exposes engine oil to contamination that can accelerate wear across bearings, rings, and cylinder walls. When the cap fails to seat correctly, it can also disrupt crankcase ventilation balance, leading to oil seepage, increased emissions from the breather, and premature seal failure — making timely replacement critical to engine longevity.

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.