This suits Nissan Navara vehicles with the TD27 engine.
This is the filter inside the injector pump.
It is located under the banjo bolt on the supply side of the pump approx 40mm down.
These can clog up and need a clean, but also they can be missing.
Make sure you have one in your pump to stop contaminants going through the pump and into your injectors.
There is also a spring in the same place too, so if thats missing, you'll need one of those too.
Check out our other listing if you need both or just the spring.