• HPD Crankcase Breather - 4JJ1 - 4JJ3 - Side Exit - Common Rail Cowboys
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HPD Special Parts

HPD Crankcase Breather - 4JJ1 - 4JJ3 - Side Exit

HPD Crankcase Breather - 4JJ1 - 4JJ3 - Side Exit

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$97.49 AUD
$97.49 AUD
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HPD Side Exit Crankcase Breather –

4JJ1 / 4JJ3

 

✅ Side Exit Design | ✅ Bolt-On Fitment | ✅ Free Express Shipping

🧰 CNC Alloy 🔩 Bolt-On 💳 Afterpay • Humm • Klarna • Zip

Upgrade your 4JJ breather system with the HPD Side Exit Crankcase Breather – designed specifically for 4JJ1 and 4JJ3 engines. Perfect for custom catch can setups or high-performance builds requiring a clean breather exit point.

Need the matching push-in -10AN adapter? Grab it here.

🔧 Suits the Following Vehicles
  • Holden Rodeo RA7 – 2007–2008
  • Holden Colorado RC – 2008–2012
  • Isuzu D-MAX 4JJ1 – 2008–2020
  • Isuzu D-MAX 4JJ3 – 2020-on*
  • Isuzu MU-X 4JJ1 – 2013–2020
  • Isuzu MU-X 4JJ3 – 2020-on*
  • Mazda BT-50 4JJ3-TCX – 2020-on*

* Requires 4 × 8G (4.2 × 30 mm) pan-head stainless self-tappers (max head Ø 8.5 mm).

❌ Not compatible with 4JJ1-TC models running the factory top-mount intercooler.
📦 What You Need to Know
  • Made by HPD Special Parts – Thai import
  • Side exit design for clean hose routing and catch can setups
  • 4JJ3 models require suitable mounting screws (not included)
🧩 Fitment Notes
  • Direct bolt-on to 4JJ1/4JJ3 rocker cover breather location
  • Verify clearance with aftermarket intercooler piping
  • Use medium-strength thread locker on self-tappers
🛠️ Install Overview
  1. Remove factory breather outlet and clean sealing area
  2. Position the HPD side-exit breather and mark holes (if required)
  3. Fasten using the recommended hardware; do not overtighten
  4. Route hose to catch can or safe vent point; secure with clamps
🧰 Tools & Hardware
  • Phillips or hex driver (per screw type)
  • 4 × 8G (4.2 × 30 mm) stainless pan-head screws for 4JJ3
  • Medium thread locker
💳 Flexible Payment Options
  • Afterpay, Humm, Klarna & Zip available at checkout
🚚 Free Express Shipping Australia-Wide

Typically ships same or next business day – unless out of stock.

📦 Dispatch & Tracking
  • Express postage AU-wide with tracking
  • Signature on delivery available on request
🌏 International

Need international shipping? Message us for a quote before ordering.

⚠️ Stock Notice

Usually in stock. Occasionally a 1–3 week wait may apply depending on demand. Need it urgently? Ping us in chat before ordering.

❓ FAQs

Will this fit 4JJ1 and 4JJ3 without mods?
Yes. It’s a bolt-on for both. For 4JJ3 you’ll need suitable mounting screws (not included).
Is it compatible with factory top-mount intercoolers?
No. Not compatible with 4JJ1-TC models running the factory top-mount intercooler.
Do I need an additional adapter?
If you want to plumb to a catch can using -10AN hose, use the matching push-in -10AN adapter (sold separately).
How fast do you ship?
Orders typically ship same/next business day via Express Post (AU), subject to stock.

👉 Clean up your 4JJ breather routing the right way — add to cart now.

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