Multiquip 01850902 Cylinder Head QP4-TZ 1B40

The Multiquip 01850902 Cylinder Head QP4-TZ 1B40 is a genuine OEM cylinder head designed for the MVH408DZ reversible plate compactor. As a direct OEM replacement sourced through Multiquip's authorized parts network, 01850902 is manufactured to the same specifications as the original component installed at the factory. This cylinder head is a confirmed fit for the MVH408DZ, making it the correct choice for operators and service technicians working on that machine.

Key Features

• Genuine OEM Construction — Precision-cast to exact combustion chamber geometry, ensuring correct compression ratios and sealing surface integrity for the QP4-TZ 1B40 engine.
• Direct Engine Replacement — Engineered as a drop-in fit for the QP4-TZ 1B40 engine assembly, aligning with all existing head bolt patterns, port positions, and gasket interfaces.
• Confirmed MVH408DZ Fitment — Verified OEM fitment for the Multiquip MVH408DZ heavy-duty reversible plate compactor series.
• Restores Full Engine Output — A correctly sealed cylinder head maintains the compression needed for reliable ignition and consistent compaction force — a cracked or warped head leads to power loss and hard-starting conditions.
• Critical Sealing Surface Quality — Machined mating surface prevents combustion gas blow-by and coolant or oil intrusion that can cause progressive engine damage if left unaddressed.

The cylinder head is one of the most structurally critical components in a small engine. It seals the top of the combustion chamber, housing the valves and providing the surface against which the head gasket compresses to contain combustion pressure. When a cylinder head cracks, warps, or develops a compromised sealing surface — often due to overheating or improper torque — the engine loses compression, burns oil, or fails to start altogether. Replacing it with a correct OEM unit like the Multiquip 01850902 restores proper compression and combustion efficiency, getting the MVH408DZ back to full compaction performance.

For fitment questions or to confirm this part is correct for your machine, 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.