The Multiquip 12209Z4M801 is a genuine OEM Valve Stem Seal designed for a wide range of Multiquip plate compactors and gasoline-powered generators. This seal is a direct OEM replacement confirmed for MVC82VH, MVC82VHW, MVC88VTH, MVC88VTHW, MVH128GH, MVH158GH, MVB85H, SP1G, GA2.5HR, and GAC2.5HR equipment. Sourced directly from Multiquip, part number 12209Z4M801 carries the same specifications as the original component installed at the factory. When your equipment demands an exact-fit seal to maintain engine integrity, this is the part to reach for.
Key Features
- Genuine OEM Material Grade — Manufactured to the original rubber compound and dimensional spec, ensuring the seal compresses and seats correctly against the valve stem without leaking under operating heat and pressure.
- Drop-In Engine Replacement — Installs directly onto the valve stem without machining or modification, matching the original seal profile for a flush, secure fit on all compatible engines.
- Broad Equipment Compatibility — Confirmed fitment across Multiquip MVC, MVH, and MVB plate compactor families, plus GA and GAC gasoline-powered generator models including GA2.5HR and GAC2.5HR.
- Protects Engine Oil Consumption — A properly functioning valve stem seal prevents engine oil from migrating past the valve guides into the combustion chamber, keeping oil consumption in check and exhaust clean.
- Fuel System Safety Relevance — A worn or cracked valve stem seal that allows oil into combustion can cause hard starting, fouled plugs, and excessive smoke — replacing it promptly maintains safe and clean engine operation.
The valve stem seal wraps around the stem of each engine valve where it passes through the cylinder head guide. Its job is to meter and restrict engine oil from traveling down the valve stem into the combustion chamber during the intake and exhaust cycles. When this seal hardens, cracks, or loses its lip tension — typically from heat cycling and age — oil begins to slip past it, burning in the chamber and producing blue smoke at the exhaust. Over time, unchecked oil consumption can foul spark plugs and accelerate internal wear. Replacing the valve stem seal restores the proper oil barrier and brings engine performance back to spec.
Need help confirming this part fits your machine? Contact the DHS Equipment parts team with your model and serial number and we will verify compatibility before you order.
Part Details
| Part Number | 12209Z4M801 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Valve Stem Seal |
Compatibility & Fitment
| Name | Model |
|---|---|
| Gasoline Powered Generators | GA2.5HR |
| Plate Compactors | MVH158GH |
| Saws | SP1G |
| Plate Compactors | MVC88VTH |
| Plate Compactors | MVC88VTHW |
| Gasoline Powered Generators | GAC2.5HR |
| Plate Compactors | MVH128GH |
| Plate Compactors | MVB85H |
| Plate Compactors | MVC82VH |
| Plate Compactors | MVC82VHW |
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.
