• HPD Special Parts aluminium rocker cover for engine, featuring a sleek, durable design with visible mounting points.
  • HPD Special Parts aluminium rocker cover for engine, featuring a sleek metallic finish and detailed design.
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HPD Special Parts

HPD 4JJ1 Aluminium Rocker Cover

HPD 4JJ1 Aluminium Rocker Cover

$833.00 NZD
$833.00 NZD
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Usually ships within 2–3 weeks

HPD 4JJ1 Aluminium Rocker Cover – Thai Import

✅ Aluminium Construction | ✅ Thermal Crack Resistant | ✅ Free Express Shipping AU-Wide

🧱 Aluminium Housing 🚚 Express Shipping 💳 Afterpay • Humm • Klarna • Zip
🧩 Product Overview

This HPD Special Parts 4JJ1 Rocker Cover uses a high-grade aluminium casting for superior heat resistance and durability. Ideal upgrade from plastic covers on tuned or hard-worked engines for a cleaner, tougher bay.

🔧 Vehicle Compatibility
  • Isuzu D-MAX 4JJ1 Euro 2 & Euro 3 (3-bolt front pattern) ~2007–2012
  • Holden Rodeo 4JJ1 ~2007–2008
  • Holden Colorado 4JJ1 ~2007–2010
Generally not compatible with plastic injector covers — these HPD covers are shaved/low-profile for performance applications.

👉 Injector & Rocker Cover Fitting Kits

🔥 Why Upgrade?
  • Crack-resistant aluminium vs OEM plastic in heat and vibration
  • Performance look — premium finish for show-worthy bays
  • Reliability — better longevity for tuned/towing setups
🚫 What’s Not Included
❓ FAQs
Will this fit my 4JJ1?
Fits Euro 2/3 4JJ1 with the 3-bolt front pattern (approx. 2007–2012) in D-MAX, Rodeo and early Colorado. If unsure, send VIN/reg for confirmation.
Can I reuse my injector cover?
Usually no — these HPD covers are shaved/low-profile. Most builds run without the plastic injector cover.
Do I need extra parts to install?
We recommend a fresh rocker cover gasket and new injector sealing kit. See our linked fitting kits.
Is it compatible with catch cans/breathers?
Yes — pairs well with HPD breather adapters and -10AN hardware for clean routing.
How fast do you ship?
Express AU-wide. In stock items dispatch same/next business day. Occasionally a 2–4 week wait depending on demand.
💳 Payment & 🚚 Shipping
  • 💳 Afterpay, Humm, Klarna & Zip available
  • ✈️ Free Express Shipping Australia-Wide
  • ⚡ Fast dispatch from our Aussie warehouse (stock-dependent)

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