FuseTech
Taxes included. Shipping calculated at checkout.
Couldn't load pickup availability
Unleash the full fuel delivery potential of your HP5 pump with the FuseTech 18mm Stroker Shaft – designed specifically for 1GD-FTV and 4JJ3 engines. This precision-machined upgrade increases stroke from the factory ~12mm to a massive 18mm — a +50% lift gain that helps deliver higher rail pressure and better fuel volume at every RPM.
⚠️ PROFESSIONAL INSTALLATION REQUIRED: HP5 pump disassembly/reassembly requires specialized knowledge. Custom ECU calibration mandatory.
⚠️ IMPORTANT: Does NOT fit I-ART versions of 1GD. If unsure, send us your VIN for confirmation.
Installation hardware handled by pump builder.
If not in stock, dispatch may take 2–3 weeks. Message us if you need it urgently.
For off-road / competition use only. Fuel system modifications may affect compliance. Check local regulations before purchase.
Q: Will this fit I-ART versions of 1GD?
A: No — this shaft suits pre I-ART 1GD-FTV only. If unsure, send us your VIN and we'll confirm.
Q: Do I need tuning after installation?
A: Yes — a custom ECU calibration is required to command the additional delivery safely and avoid rail pressure faults.
Q: What rail pressure gains should I expect?
A: The 18mm stroke provides substantially more pump displacement. Actual rail pressure gains depend on injector condition, relief strategy (or rail blank), and tuner settings.
Q: Can I install this at home?
A: We strongly recommend a professional pump builder. The HP5 requires precise assembly, clearances and cleanliness to avoid premature failure.
Q: Is it road legal?
A: Fuel system modifications may affect compliance. This product is intended for off-road/competition use where permitted. Check local regulations.
Q: Will this work with larger injectors?
A: Yes — the increased stroke helps maintain rail pressure when running larger injectors, especially at high RPM.
FuseTech 18mm stroker shaft. +50% stroke. High-RPM ready. Professional installation required. Made in Thailand.
Disclaimer: Common Rail Cowboys is not affiliated with Toyota Motor Corporation or Isuzu Motors. Installation should be performed by a qualified HP5 pump specialist. Fitment verification and proper tuning are the buyer's responsibility.
