HPD 4JJ1 Boost Gauge Adapter

✅ DIY Friendly | ✅ Billet Aluminium | ✅ Free Express Shipping Australia-Wide

Take the guesswork out of your boost levels with the HPD Boost Gauge Adapter – made specifically for 4JJ1 engines by HPD Special Parts Thailand.

This easy bolt-on upgrade allows you to cleanly and securely install a boost gauge without the need for drilling, welding, or sketchy T-piece setups. Whether you're keeping an eye on factory boost or monitoring your tuned setup, this is the gauge adapter you want under the bonnet.

💪 Key Features:

• Billet anodised aluminium – available in a range of HPD colours
• Includes stainless bolts & a new O-ring for leak-free install
• No modifications required – direct fit design
• Perfect match with HPD boost gauge setups

🔧 Suits:

• Holden Rodeo RA7 – 4JJ1
• Holden Colorado RC – 4JJ1
• Isuzu D-MAX – 2006 to 2016 (4JJ1)
• Isuzu MU-X – 2012 to 2015 (4JJ1)

🛠️ Install Tip:

This is a bolt-in upgrade – no tuning or extra parts required. Perfect for anyone running a boost gauge and wanting to do it the right way the first time.

💳 Flexible Payment Options

Afterpay, Humm, Klarna and Zip available at checkout.

🚚 Free Express Shipping Australia-Wide

Fast dispatch with tracking from our Aussie warehouse.

Please Note:

Due to demand, some colour combos may occasionally be out of stock. If so, we’ll reach out to offer an alternative or special order it in for you 🤙