The Wacker Neuson Piston Ring Set 0.75 is a genuine OEM component designed for the GP3800A series portable generators, including Portable Generator and Premium Portable Generator configurations. As a direct Wacker Neuson OEM part, is manufactured to the same specification as the original rings installed at the factory, ensuring correct ring gap tolerances and material grade for the GP3800A engine. This set covers the 0.75mm oversize bore dimension, making it the correct choice when an engine has been bored out during a top-end rebuild. Confirm your machine number against the GP3800A variants listed below before ordering to ensure an exact match.
Key Features
- Oversize-Specific Fitment: — Sized at 0.75mm oversize to match a bored GP3800A cylinder — not a standard-bore replacement, so confirm your engine's bore dimension before ordering.
- Genuine OEM Ring Material and Tolerancing: — Manufactured to Wacker Neuson OEM specification, ensuring correct ring tension, face coating, and gap clearance for the GP3800A engine's compression and oil-control demands.
- Complete Set: — Supplies all rings required for a single piston, simplifying parts procurement during a top-end or full engine rebuild.
- GP3800A Generator Family Coverage: — Compatible with multiple GP3800A configurations, including standard Portable Generator, Premium Portable Generator, and the Portable Generator with Wheel Kit variants.
- Compression and Oil Control Restored: — Worn or broken piston rings allow combustion gases to blow past the piston (blow-by) and let oil enter the combustion chamber, causing power loss, excessive smoke, and high oil consumption. A fresh ring set restores proper sealing and engine output.
Piston rings seal the gap between the piston and the cylinder wall, serving two critical roles: they contain combustion pressure above the piston to maximize power output, and they control the thin film of oil on the cylinder wall to prevent excess oil from burning in the combustion chamber. When rings wear, lose tension, or break, the engine loses compression, burns oil, and produces visible exhaust smoke — all signs that a ring replacement is overdue. Because this set is sized at the 0.75mm oversize dimension, it is intended for use after the cylinder bore has been machined to that oversize specification during a rebuild.
Part Details
| Part Number | 5000162628 |
|---|---|
| Old Part Number | 0162628 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring Set 0.75 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator | GP3800A | 5000620104, 5000620041, 5000620103, 5000620010, 5000620379, 5000620485 |
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.
