Built tough for Aussie conditions, this HPD Special Parts 4JJ1 Rocker Cover is made from high-grade aluminium for improved durability and resistance to heat fatigue. Whether upgrading from plastic or chasing reliability in tuned builds, this rocker cover delivers strength and a clean, premium look.

• 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 injector covers — shaved/low-profile rocker covers for performance applications.

👉 Injector & Rocker Cover Fitting Kits available here

• Aluminium construction — won’t crack like OEM plastic
• Performance look — clean finish to match high-end engine bays
• Built for reliability — handles heat and pressure with ease

Available separately:

• 4JJ1/4JJ3 Billet Oil Cap
• -10AN Crankcase Vent Adapter
• 4JJ1 Injector & Rocker Cover Fitting Kit

• 💳 Afterpay, Humm, Klarna & Zip available at checkout
• ✈️ Free Express Shipping Australia-Wide
• ⏳ Dispatched fast from our Aussie warehouse (sometimes 2–4 week wait depending on stock)