The Genie 1258711GT is a genuine OEM Exhaust NOx Sensor, TCD3.6 T4F built for Genie GTH telehandlers, specifically the GTH-844, GTH-1056, and GTH-1256. As a direct OEM replacement, this sensor is manufactured to the same specification as the original part, ensuring a correct fit without modifications. Verify part number 1258711GT against your machine's parts manual to confirm this is the right sensor for your unit's serial range and configuration.
Key Features
- Genuine OEM Specification — Manufactured to the same standards as the original, with the correct electrical output and connector configuration for the TCD3.6 T4F engine application.
- Direct OEM Replacement — Designed to install in place of the original sensor with no adaptation required, maintaining the integrity of the emissions monitoring circuit.
- Confirmed Fitment — Built for Genie GTH-844, GTH-1056, and GTH-1256 telehandlers equipped with the TCD3.6 T4F engine. Cross-reference 1258711GT against your parts manual before ordering.
- Emissions System Integrity — A functioning NOx sensor is essential for accurate exhaust monitoring. A failed or out-of-range sensor can trigger fault codes, derate engine performance, or prevent the machine from operating.
A NOx sensor monitors the level of nitrogen oxides in the exhaust stream of the engine. On Tier 4 Final machines like the GTH-844, GTH-1056, and GTH-1256, this sensor provides feedback to the engine management system to control emissions within regulatory limits. When the sensor fails or reads incorrectly, the engine control unit may log fault codes, limit engine output, or prevent the machine from starting — making prompt replacement with the correct OEM part critical to keeping the telehandler in service.
Part Details
| Part Number | 1258711GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Exhaust NOx Sensor, TCD3.6 T4F |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-844 | GTH-844 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
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.
