Have Questions? We are here to help
-
Guaranteed Fitment
Always the correct part
-
In-House Experts
We know our products
-
Added Value
Warranties available
-
Wordwide Delivery
We ship all over the world
Spool Helix HPFP Overdrive Unit BMW N54 N55
The Spool Helix HPFP Overdrive Unit is a planetary gearbox engineered for the N54 and early N55 high-pressure fuel pump. Using a ring gear, planet gears, and a sun gear in an axial configuration, it increases HPFP shaft speed to raise delivery strokes per cycle and displacement volume without secondary port injection.
It supports up to 600whp on full E85 and 750+whp on E60 mixes. Each purchase includes a billet vacuum cover mounting plate, support bracket, and all necessary installation hardware. Tune changes are required, and calibration adjustments are provided upon request.
Key Features
| Brand | Spool Performance |
| Product Type | High Pressure Fuel Pump Overdrive Unit |
| Compatibility | BMW N54 and early N55 engines |
| Material | Billet aluminum |
| Fuel Support | Up to 600whp on full E85; 750+whp on E60 mixes |
| Included Components | Billet vacuum cover mounting plate, support bracket, installation hardware |
| Tune Required | Yes |
Highlights
- Planetary gearbox increases HPFP shaft speed for greater fuel delivery
- Supports up to 600whp on full E85 and 750+whp on E60 mixes
- Eliminates need for secondary port injection
- Includes billet vacuum cover mounting plate, support bracket, and installation hardware
- Tune changes required; calibration adjustments provided upon request
Compatibility
Designed for BMW N54 and early N55 engines.
What's included
- Billet Vacuum Cover Mounting Plate
- Support Bracket
- All Necessary Installation Hardware
Frequently asked questions
|