• Isuzu D-MAX 4JJ1-TC — 2006–2012
• Holden Colorado RC 4JJ1-TC — 2008–2012
• Holden RA7 Rodeo 4JJ1-TC — 2007–2008

Guide only — Fill in vehicle info before clicking add to cart.

Choose your install kit based on what you need:

Option 1 — Complete 4JJ1 Fitting Kit (Recommended):

Full genuine kit with copper washers, O-rings, seals and hardware. The proper way to do the job.

Option 2 — Nozzle Washer Kit Only (Budget):

Bare minimum if you're only replacing copper washers. Not recommended unless you know what you're doing.

Essential — 4JJ1 Injector Lines:

Reusing old injector lines is the #1 cause of post-install leaks. Always replace when fitting new injectors.

💡 Pro Tip: Absolute cleanliness is critical when working with common rail injectors. Even minor contamination can damage brand new injectors. Always replace copper washers and injector lines.

• Flow Increase:~+30% / +50%
• Injector Type: Complete injector (body + nozzle)
• Boost Capability: ~45 PSI with correct tuning
• Tuning: ECU remap required
• Use Case: Turbo & intercooler upgraded vehicles
• Power Target: 200–300+ RWHP with supporting mods

These are complete injector assemblies. They are not nozzle-only parts.

When sold as Genuine, this refers to the Denso injector body. The nozzle is replaced or modified to achieve the +30 flow increase, meaning specifications differ from OEM.

Denso base: 095000-6980 (common code prefix "5F")

Alternate Denso: 095000-6100, 095000-6983

Isuzu / GM: 98011604, 8-98011604-0 / -1 / -2 / -3 / -4 / -5

• Injectors must be coded to the ECU
• Always install new seat washers and seals
• Absolute cleanliness is critical
• Check return rates and rail control on first start

• 📦 Same Day Dispatch* — order before cut-off for same business day shipping
• 🚚 Free Express Shipping Australia-Wide — full tracking included
• 💳 Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip
• 🇦🇺 All major credit cards accepted

*Orders placed before 2 pm AEST on business days, subject to stock availability.

Q: Do I need a tune?

A: Yes. +30 injectors require ECU calibration to control fueling, AFR and EGT. Running upgraded injectors without a tune will cause over-fueling and unsafe conditions.

Q: Are these brand new?

A: Yes — Genuine Denso injector bodies with performance +30 nozzles fitted. Not refurbished or exchange units.

Q: How do I confirm fitment?

A: Check your existing injector code or send VIN/reg before ordering. We'll confirm compatibility before dispatch.

Q: What's included in the complete fitting kit vs washer kit?

A: The complete 4JJ1 fitting kit includes copper washers, O-rings, seals and all hardware needed for a proper install. The washer kit is copper washers only — bare minimum for budget installs.

Q: Can I run these on a stock turbo?

A: Not recommended. +30 injectors are designed for upgraded turbo setups (F44/F55). Stock turbo won't support the additional fueling potential.

Q: What power can I expect?

A: 200–300+ RWHP depending on supporting mods (turbo, intercooler, exhaust, tune quality). These are serious performance injectors, not bolt-ons for stock setups.