Fendt 5255 L All 6.6 SISU Tier 3B - 243hp
Real standard and upgraded performance figures for the 6.6 SISU Tier 3B - 243hp engine in the Fendt 5255 L All.
These are real standard and Stage 1 (and where available, Stage 2) figures for the Fendt 5255 L All 6.6 SISU Tier 3B - 243hp — not a generic estimate for the model range.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 243 | 1 |
| Stage 1 | 292 | 1 |
| Stage 2 | 316 | 1 |
- Make
- Fendt
- Model
- 5255 L
- Generation
- All
- Engine
- 6.6 SISU Tier 3B - 243hp
- Fuel type
- diesel
Frequently asked questions
Is Stage 1 tuning safe for the Fendt 5255 L All 6.6 SISU Tier 3B - 243hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 6.6 SISU Tier 3B - 243hp make after tuning?
Standard output is 243 HP / 1 Nm; Stage 1 on this engine typically reaches 292 HP / 1 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Fendt 5255 L All 6.6 SISU Tier 3B - 243hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 6.6 SISU Tier 3B - 243hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.