The Multiquip 2792020121 Crankshaft Complete is a genuine OEM component designed for GA4.5R and GA4.5RA portable generators. As a direct OEM replacement, this crankshaft is manufactured to the exact tolerances required for proper engine operation, ensuring correct stroke geometry and bearing journal fit. Sourced directly through Multiquip's OEM supply chain, part number 2792020121 is the correct specification for these generator models with no guesswork on fitment.
Key Features
- OEM-Grade Precision Tolerancing — Machined to exact journal dimensions and surface finish specifications, ensuring correct bearing clearances and crankpin geometry for these generator engines.
- Direct Drop-In Replacement — Engineered to align with all mating components — connecting rod, main bearings, and flywheel — exactly as the original unit, supporting a straightforward engine rebuild.
- Confirmed Fitment for GA4.5R and GA4.5RA — Verified compatible with GA4.5R and GA4.5RA Multiquip portable generator models.
- Restores Full Power Output — A worn or damaged crankshaft causes vibration, power loss, and accelerated bearing wear; replacing it with a correctly spec'd OEM unit restores smooth engine operation and rated output.
- Critical Rotating Assembly Integrity — As the heart of the engine's reciprocating assembly, correct crankshaft specification directly affects engine balance, oil pressure maintenance, and long-term internal component life.
The crankshaft is the central rotating component of a four-stroke engine, converting the up-and-down motion of the piston into the rotational force that drives the generator's alternator. It must maintain precise dimensional tolerances across its main journals and crankpin to support smooth, balanced rotation under load. When a crankshaft becomes worn, bent, or damaged — through lack of lubrication, overloading, or impact — the engine will develop vibration, loss of compression integrity, and bearing failure, ultimately bringing the generator out of service.
For assistance confirming this part fits your specific unit, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 2792020121 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Crankshaft Complete |
Compatibility & Fitment
| Name | Model |
|---|---|
| Portable Generators | GA4.5R |
| Portable Generators | GA4.5RA |
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.
