Injector Fitting Kit suitable for Isuzu 4JJ1 – Pre-2014

When replacing injectors on a 4JJ1 engine, a fitting kit is essential to prevent leaks and ensure everything seals up properly. Isuzu updated the rocker cover design in 2014, which changed the injector seals and gaskets used. This kit is designed specifically for Pre-2014 models (up to 2013 build).

🚗 Suitable for:

• Isuzu D-MAX 3.0L 4JJ1-TC (2008–2013)

• Holden Colorado / Rodeo 3.0L 4JJ1 (2008–2013)

• MU-X 3.0L 4JJ1 (up to 2013 build)

📦 What’s in the kit:

• 1 × Rocker cover gasket (pre-2014 design)

• 4 × Leak Off Washers

• 4 × Injector Solenoid Seal

• 4 × Injector Seal

🛠️ Fitment details:

• NOTE: 2014 is a change over year, so VIN is required to see if correct fitting kit is supplied.

• 2014 onwards uses a different rocker cover – this kit will not fit post-2014 engines

• Required whenever fitting new or reconditioned injectors

💡 Why you need this kit:

• Prevents compression leaks (“blow-by”) and oil leaks around injectors

• Replaces seals that cannot be reused once disturbed

• Protects new injectors and ensures long-term reliability