Genuine Zexel TD42 Injectors suitable for Nissan Patrol GQ GU TD42T
Vehicle Fitment is suitable for,
- Nissan Patrol GQ Y60 1989-1997 TD42 4.2L Diesel (Aftermarket turbo and non-turbo)
- Nissan Patrol GU Y61 1997-2006 TD42T 4.2L Turbo Diesel (Factory turbo, non turbo and aftermarket turbo)
- All TD42 Engines (Except TI models if retaining factory injection pump)
Technical Specifications
- Genuine Zexel injectors, set of six (6).
- Injector washer set included.
- Made in Japan, outright purchase, no exchange required.
- Suitable for TD42 and TD42T, including engines running an aftermarket turbo.
- Suits everything from a standard TD42 up to a 300hp build, with any pump size.
- OEM part numbers: 105078-0050, 105148-1121, 1660043G03.
Signs that you need to replace your fuel injectors on your TD42 are,
- Trouble starting the vehicle
- Uneven Idling
- Misfiring
- Excessive smoke
- Increase in fuel consumption
Recommended replacement intervals,
- We recommend replacing your TD42 injectors every 100,000 KM’s for longevity and reliability of your engine.
- We also recommend replacing your injectors when replacing the standard injector pump or upgrading to a performance 12mm injector pump
- Or, if your are experiencing any of the above symptoms, your injectors may need to be replaced.
Other recommend items,
- It is common to have the injector bleed off rail break when replacing the injectors due to age.
- This occurs when undoing the injector from the head – it is common that the return rail becomes ‘stuck’ to the injector and spins with it causing it to snap.
- If you require a new one, we can supply you a brand new genuine item here.
Who are ZEXEL?
- Zexel injectors are high quality OEM Parts manufactured in Japan and used by many vehicle manufacturers such as Nissan to produce their fuel injection system parts, such as injectors and fuel injection pumps.
Exchange?
- This is a brand new set for outright purchase, NO EXCHANGE REQUIRED. We do not recommend throwing your old set out, maybe give them to a local injector shop.
Important Note regarding TD42Ti engines only,
- These do not suit TD42Ti engines as the #1 injector has a wire on it going back to the injector pump for a injection timing signal. If you have replaced your Ti pump with an aftermarket pump, you can go ahead and fit these injectors – however you will need to also replace the return rail as well.
FAQs
Q: Do I need different injectors for a 10mm, 11mm or 12mm pump?
A: No. These are pintle nozzle injectors that crack open at a set pressure, so the size of the pump does not change which injector you need. The standard genuine set is the right choice from a standard TD42 right up to a 300hp setup.
Q: How often should I replace them?
A: We recommend every 100,000km. Also replace them when you fit a new or upgraded injector pump, or if you have any of the symptoms listed above.
Q: Do they suit a TD42Ti?
A: Not if you are keeping the factory injection pump. The number one injector on a Ti carries a wire back to the pump for the injection timing signal. If you have already fitted an aftermarket pump you can run these, but you will need a new return rail as well.
Q: Is an exchange required?
A: No. This is a brand new set for outright purchase. Keep your old set or pass it on to a local injector shop.














Super easy to deal with clear communication on when parts are coming back into stock. I have ordered many times from here always easy
Timely delivery including part exchange and whoever I spoke to over the phone was knowledgeable, gave good advice and put together a kit to suit my existing parts.
Cheers guys at HD!
Cheers guys, work great
Came quick, glad I got the return rail too because my injectors were siezed onto my original one meaning it broke when i took it out. Thanks guys