The Wacker Neuson is a genuine OEM 0.25 Connecting Rod designed for the GP3800A and GV3800 series portable generators. As a factory-sourced component, this part is manufactured to the exact specifications required by the GP3800A and GV3800 engines, ensuring a direct, accurate replacement when the original rod has worn beyond service limits or suffered damage. This connecting rod fits across the full GP3800A lineup — including standard, premium, and wheel kit configurations — as well as the GV3800 value portable generator variant.
Key Features
- Genuine OEM Metallurgy: — Cast and machined to the same material grade and dimensional tolerances as the original factory rod, maintaining proper big-end and small-end bore clearances critical to engine longevity.
- 0.25 Undersize Specification: — The 0.25 undersize designation means this rod is engineered for use with a reground or undersized crankshaft journal, making it the correct choice during engine rebuild or bottom-end reconditioning.
- Broad GP3800 Series Coverage: — Confirmed fitment across GP3800A standard, premium, and wheel kit variants, the GV3800 value generator, and EPA- and CSA-compliant GP3800 models.
- Engine Integrity Restored: — A worn or damaged connecting rod causes excessive crankcase vibration, oil consumption, and ultimately catastrophic engine failure; replacing it with the correct OEM part restores smooth, balanced operation and rated power output.
- Verified Part Number: — Sourced directly under Wacker Neuson part number 5000162643, eliminating guesswork when ordering for engine rebuild jobs on GP3800-family machines.
The connecting rod links the piston to the crankshaft, converting the up-and-down motion of combustion into the rotational force that drives the generator's alternator. In an undersized application, the 0.25 rod accommodates a crankshaft that has been reground to restore a worn journal surface, maintaining the correct oil film clearance between the rod bearing and the crank. When a connecting rod is worn, bent, or running out of clearance, the engine will produce a pronounced knock, lose power, and risk seizing — making timely replacement with the properly specified part essential to a successful engine rebuild.
Part Details
| Part Number | 5000162643 |
|---|---|
| Old Part Number | 0162643 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | 0.25 Connecting Rod |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator | GP3800A | 5000620104, 5000620379, 5000620485, 5000620342, 5000620484, 5000620041, 5000620103, 5000620010 |
| Value Portable Generator | GV3800 | 5000620994 |
| GP3800A Generator, EPA | GP3800 | 5000620974, 5000620975, 5000620976 |
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.
