The Multiquip 12210Z5T406 Cylinder Head Complete is a genuine OEM component designed for GA6HB, GA6HEB, GAW180HE, GAW180HEA, GAW180HE1, MC12PH, and MRH800GS equipment. As a direct OEM replacement, this cylinder head is manufactured to the same specifications as the original part, ensuring a proper fit and correct sealing with the engine block on all covered models. If you are servicing a gasoline-powered generator, arc welder, concrete mixer, or walk-behind roller in the Multiquip lineup, verifying the 12210Z5T406 part number against your model code before ordering is the best way to confirm compatibility.
Key Features
- Genuine OEM Casting Integrity — Manufactured to the original combustion chamber geometry and port dimensions, ensuring correct compression ratio and airflow characteristics for the engine.
- Direct Bolt-On Replacement — Matches the original head gasket mating surface, valve seat positions, and fastener pattern so it installs directly onto the engine block without modification.
- Broad Model Coverage — Fits GA6HB, GA6HEB, GAW180HE, GAW180HEA, GAW180HE1, MC12PH, and MRH800GS, covering gasoline generators, arc welders, concrete mixers, and walk-behind rollers in the Multiquip portfolio.
- Sustained Engine Output — A properly sealed cylinder head maintains compression and prevents coolant or oil intrusion into the combustion chamber, keeping the engine running at rated power output.
- Fuel System Safety — Correct head sealing prevents combustion gases from escaping past the gasket surface, reducing the risk of fuel vapor ignition and uncontrolled exhaust emissions in enclosed work environments.
The cylinder head forms the top of the engine's combustion chamber, housing the valves, spark plug port, and combustion recess that together control the intake, compression, ignition, and exhaust cycle. It bolts to the engine block and relies on a precisely machined mating surface to maintain a gas-tight seal with the head gasket. When a cylinder head cracks, warps, or develops a damaged valve seat, compression drops sharply, the engine loses power, and internal fluids can mix — leading to overheating or a seized engine if left unaddressed. Replacing a failed head with a genuine OEM unit like the Multiquip 12210Z5T406 restores the original compression and combustion efficiency the engine was built to deliver.
Part Details
| Part Number | 12210Z5T406 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cylinder Head Complete |
Compatibility & Fitment
| Name | Model |
|---|---|
| Gasoline Powered Generators | GA6HB |
| Gasoline Powered Generators | GA6HEB |
| Welders | GAW180HEA |
| Welders | GAW180HE1 |
| Welders | GAW180HE |
| MQ Mixers | MC12PH |
| Rollers | MRH800GS |
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.
