The Wacker Neuson Valve Spring is a genuine OEM component designed for the G40, G50, G60, G70, G95, and G110 series portable generators. As a direct OEM replacement, this valve spring is manufactured to the same specifications as the original part — ensuring correct tension, seating geometry, and engine timing integrity across all supported models. It is compatible with a broad range of G-series generator configurations, including standard, mobile, 50Hz LATAM, and Brazil-market Premium and Value variants. Keep a spare on hand to avoid extended equipment downtime during scheduled valve train service.
Key Features
- Correct Spring Rate for Engine Valve Control — Manufactured to OEM tension specifications, ensuring the intake and exhaust valves open and close at precisely the right intervals for consistent engine performance.
- Drop-In Fitment for G-Series Generators — Engineered to seat directly into the valve retainer and keeper assembly of G-series engines with no modification to the cylinder head required.
- Broad G-Series Compatibility — Fits G40, G50, G60, G70, G95, and G110 generator models across multiple regional configurations, including 50Hz LATAM and Brazil-market units.
- Restores Full Engine Breathing Efficiency — A worn or fatigued valve spring causes weak valve closure, leading to compression loss, rough running, and increased fuel consumption; replacing it restores full cylinder sealing.
- Genuine Wacker Neuson OEM Part — Sourced directly through the Wacker Neuson parts network, backed by the confidence of an authorized OEM component for the G-series generator line.
A valve spring holds the engine's intake or exhaust valve firmly against its seat when the valve is closed, maintaining cylinder compression and preventing combustion gases from escaping at the wrong time. When the camshaft lobe pushes the valve open, the spring stores energy and then snaps the valve shut as the lobe rotates away. Over time, valve springs can fatigue, weaken, or break — symptoms include rough idling, loss of power, increased oil consumption, and difficulty starting. Replacing a worn valve spring restores proper valve seating and brings engine compression back to specification.
Part Details
| Part Number | 5200021412 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator | G95 | 5200016642, 5200020677, 5100029186 |
| Mobile Generator | G60 | 5200015951, 5200016641, 5100029185 |
| G70 | G70 | 5200015952, 5100022041, 5100022040 |
| Generator | G40 | 5200015906, 5200015907, 5200016640, 5100029184 |
| Generator | G50 | 5200015909 |
| G110 Generator, Brazil, Value | G110 | 5100022042, 5100022043 |
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.
