Multiquip 5117210160 Valve Inlet Head Guide

The Multiquip 5117210160 Valve Inlet Head Guide is a genuine OEM component designed for the DCA25SSI, DCA25SSIU, DCA25SSI2, DCA25SSAI, and DCA25SSIU-GEER ultra-silent diesel generator series. As a direct OEM replacement, this part is manufactured to the exact tolerances required by the original engine specification, ensuring proper valve alignment and consistent combustion performance. Sourced directly through Multiquip's authorized parts supply chain, the part is the correct choice when restoring your DCA-series generator to full operating condition.

Key Features

• OEM-Matched Valve Bore Tolerance — Manufactured to the precise bore diameter of the original inlet valve guide, ensuring correct valve stem clearance and preventing premature wear or oil migration into the combustion chamber.
• Drop-In Engine Head Compatibility — Engineered to seat directly into the cylinder head of DCA25SSI-series engines with no reworking of the head required during installation.
• Confirmed Fitment Across DCA25 Variants — Verified for use on DCA25SSIU, DCA25SSI, DCA25SSI2, DCA25SSAI, and DCA25SSIU-GEER ultra-silent diesel generators.
• Protects Valve Stem and Seat Integrity — A correctly fitted inlet guide keeps the valve traveling in a true, straight path, which preserves both the valve stem and seat and supports stable compression across all load conditions.
• Emissions and Combustion Compliance — Proper valve guide clearance directly affects combustion efficiency and exhaust emissions; using the correct OEM guide helps keep the generator running within its designed output and emissions parameters.

The valve inlet head guide is a precision bushing pressed into the cylinder head that supports and aligns the intake valve stem as it opens and closes during each engine cycle. It controls the lateral movement of the valve, maintaining a consistent seal against the valve seat to allow the correct air-fuel mixture into the combustion chamber. When a valve guide wears out or becomes loose, it causes the valve to wobble, leading to poor sealing, increased oil consumption, loss of compression, and rough or unreliable generator output.

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.