The Genie 1257778GT Exhaust Pressure Sensor is a genuine OEM component built for Genie GTH-844, GTH-1056, and GTH-1256 telehandlers. As an authentic Genie part, it is manufactured to the exact specification required for proper fit and function on the TCD3.6 T4F engine configuration found in these machines. Cross-reference part number 1257778GT against your machine's parts manual to confirm it is the correct sensor for your unit before ordering.
Key Features
- Genuine OEM Specification — Produced to Genie's exact tolerances and output calibration for the TCD3.6 T4F engine, ensuring the sensor reads and reports accurately within the exhaust circuit it serves.
- Direct-Fit Replacement — Engineered to install directly into the correct port on compatible GTH telehandlers with no adaptation needed.
- Confirmed Fitment — Fits Genie GTH-844, GTH-1056, and GTH-1256 telehandlers equipped with the TCD3.6 T4F engine package.
- Emissions System Integrity — A properly functioning exhaust pressure sensor keeps the engine management system informed of exhaust conditions, supporting correct engine operation and regulatory compliance on Tier 4 Final machines.
- Prevents Fault Codes and Derate — A failed or inaccurate sensor can trigger fault codes and engine derate modes, taking the machine out of full productive operation. Replacing it with the correct OEM part restores normal function.
An exhaust pressure sensor monitors pressure levels within the exhaust aftertreatment system and relays that data to the engine control module. On Tier 4 Final machines like the GTH-844, GTH-1056, and GTH-1256, this information is used to manage exhaust aftertreatment functions and maintain compliant engine operation. When the sensor fails or drifts out of calibration, the engine control module may log fault codes, limit engine output, or prevent normal machine operation — making prompt replacement with a verified OEM part the correct course of action.
Part Details
| Part Number | 1257778GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Exhaust Pressure Sensor, TCD3.6 T4F |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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.
