4JJ1 +30 Injectors | Isuzu D-MAX & Colorado 2007-2012

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

Guide only — check your injector code before you commit. No one likes finding out it doesn't fit halfway in.

Don't go in dry. Grab the supporting bits before install day:

• Complete 4JJ1 Fitting Kit (recommended) — copper washers, O-rings, seals and hardware. The full package. Do it properly and everyone finishes happy.
• Nozzle Washer & O-ring Kit (budget) — bare minimum if you're only swapping copper washers. Fine if you know what you're doing, risky if you're winging it.
• New 4JJ1 Injector Lines (essential) — reusing tired old lines is the number-one cause of a messy post-install squirt. Always replace when fitting fresh injectors.

💡 Pro tip: Cleanliness is everything with common rail. One speck of grit and your brand-new units are ruined before they've even had a proper run. Fresh washers, fresh lines, clean hands.

• Flow Increase: ~+30% / +50%
• Injector Type: Complete injector (body + nozzle) — the full experience, not just the tip
• Boost Capability: ~45 PSI with the right tune
• Tuning: ECU remap required (non-negotiable)
• Use Case: Turbo & intercooler-upgraded rigs that already like it hard
• Power Target: 200–300+ RWHP with supporting mods

These are complete injector assemblies. Not nozzle-only. You get the whole unit.

When we say Genuine, we mean the Denso injector body. The nozzle is modified/replaced to unlock the +30 flow, so specs will differ from bone-stock OEM. That's the whole point — stock was never going to satisfy you.

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 — introduce them properly
• Always fit new seat washers and seals
• Absolute cleanliness is critical
• Check return rates and rail control on the first start — make sure she's holding pressure

• 📦 Same-Day Dispatch* — order before cut-off and it ships that business day
• 🚚 Free Express Shipping Australia-Wide — full tracking, plain packaging, no one has to know
• 🇦🇺 All major cards accepted

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

Q: Do I need a tune?

A: Yes. Go in raw and you'll flood the chamber, wash the bores and cook your EGTs. +30 injectors need proper ECU calibration to control fuelling, AFR and temps. No tune, no fun.

Q: Are these brand new?

A: Fresh out the box. Genuine Denso bodies with +30 performance nozzles fitted — never refurbished, never an exchange unit, never touched by a previous owner.

Q: How do I confirm fitment?

A: Check your existing injector code, or send your VIN/rego and we'll confirm compatibility before it goes anywhere near your engine.

Q: Complete fitting kit vs washer kit — what's the difference?

A: The complete kit is the full package — copper washers, O-rings, seals and all the hardware for a clean job. The washer kit is copper washers only. Bare minimum, budget install, bring your own confidence.

Q: Can I run these on a stock turbo?

A: Not recommended. These want an upgraded turbo (F44/F55) that can keep up. A stock turbo simply can't handle everything they've got to give.

Q: What power can I expect?

A: 200–300+ RWHP depending on your supporting mods — turbo, intercooler, exhaust and tune quality. These are serious performance units, not a lazy bolt-on. Feed them right and they'll go all day.