HPD Special Parts
HPD Crankcase Breather - 4JJ1 - 4JJ3 - Side Exit
HPD Crankcase Breather - 4JJ1 - 4JJ3 - Side Exit
Couldn't load pickup availability
HPD Side Exit Crankcase Breather –
4JJ1 / 4JJ3
✅ Side Exit Design | ✅ Bolt-On Fitment | ✅ Free Express Shipping Australia-Wide
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 onwards*
- Isuzu MU-X 4JJ1 – 2013–2020
- Isuzu MU-X 4JJ3 – 2020 onwards*
- Mazda BT-50 4JJ3-TCX – 2020 onwards*
* Requires 4 × 8G (4.2 × 30 mm) pan-head self-tapping stainless screws (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 cleaner routing and catch can setups
- For 4JJ3 models, suitable mounting screws are required (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
- Remove factory breather outlet and clean sealing area.
- Position the HPD side-exit breather and mark holes (if required).
- Fasten using the recommended hardware; do not overtighten.
- 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
- Thread locker (medium)
💳 Flexible Payment Options
Afterpay, Humm, Klarna, and 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
These are usually in stock. Occasionally, a 1–3 week wait may apply depending on demand. Need it urgently? Shoot us a message through the store chat before ordering!
❓ FAQs
Will this fit 4JJ1 and 4JJ3 without modifications?
Yes. It’s a bolt-on solution for 4JJ1 and 4JJ3 rocker cover breather locations. For 4JJ3, suitable mounting screws are required (not included).
Is it compatible with factory top-mount intercoolers?
No. Not compatible with 4JJ1-TC models running the factory top-mount intercooler due to clearance.
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 the same or next business day via express post within Australia, subject to stock availability.
