• 4JJ1 Stroker Pump - Common Rail Cowboys
  • 4JJ1 Stroker Pump - Common Rail Cowboys
  • 4JJ1 Stroker Pump - Common Rail Cowboys
  • 4JJ1 Stroker Pump - Common Rail Cowboys
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FuseTech

4JJ1 Stroker Pump

4JJ1 Stroker Pump

$1,549.00 AUD
$1,699.00 AUD $1,549.00 AUD
Sale Sold out

Taxes included. Shipping calculated at checkout.

Lead time 1-2 weeks

4JJ1 Stroker Pump – High Flow HP3 Upgrade

 

✅ Built for 300+ RWHP | ✅ High-Flow HP3 | ✅ Free Express Shipping

🔥 1.3mm Stroker Shaft 🔧 HP3 Pump Rebuilt 💳 Afterpay • Humm • Klarna • Zip
🧩 Product Overview

This 4JJ1 Stroker Pump is a fully rebuilt Denso HP3 fitted with a 1.3mm stroker shaft, designed to deliver the fuel volume needed for 350+ RWHP performance builds.

Ideal for high-boost, big-turbo, compound, and race setups.

🚙 Vehicle Compatibility
  • Isuzu 4JJ1 Common Rail Engines — all models requiring HP3 pump

If unsure, message us with your VIN/reg for confirmation.

💨 Why Upgrade to a 1.3mm Stroker Pump?
  • ✅ Supports 350–380 RWHP depending on tuning & injectors
  • ✅ Increased plunger stroke = higher fuel delivery
  • ✅ Maintains rail pressure under high boost
  • ✅ Perfect for big turbo or compound builds
  • ✅ Direct replacement for factory HP3 pump
📦 Product Details
  • Fully rebuilt Denso HP3 body
  • Upgraded 1.3mm stroker shaft installed
  • Bench tested & calibrated
  • Remanufactured component – exchange/cores may be required
💳 Payment & 🚚 Shipping
  • Afterpay, Humm, Klarna & Zip available
  • Free Express Shipping Australia-Wide
  • Fast dispatch on all in-stock units
❓ FAQs
What power can this support?
Typically 300–380 RWHP depending on injectors, turbo size and tuning.
Is tuning required?
Yes. A custom tune is required to take advantage of increased fuel volume.
Will this fit all 4JJ1 models?
Most common-rail 4JJ1 HP3 systems — message us with VIN/reg for confirmation.
Is this brand new?
No — this is a remanufactured HP3 pump with upgraded internals.

👉 Upgrade your 4JJ1 today — unleash the fuel volume your high-power build needs.

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