WJN500110 - Air Bleed Valve – Fuel Filter Housing

- €65,50

€65,50

€65,50 - €65,50

€65,50

Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

Air Bleed Valve for the fuel filter and sedimenter housing, part of the diesel fuel supply system.

Mounted in the filter housing, the valve allows trapped air to be purged from the fuel circuit during priming and servicing, restoring proper fuel delivery to the injection system. Used to bleed the system after filter replacement or other fuel-system maintenance.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 2 1998-2004 (L318)

Fitment Notes DEFENDER 1987-2006 — Sedimentors, 2.5 TDi non EEGR, 2.5L 200 TDi, 2.5L 300 TDi, TD5
DISCOVERY 2 1998-2004 — Diesel engines

Alternative Codes

WJN500110WKB100330

In stock 9 units

8 · Gouda 1 · Drachten

Express delivery available

When will my order arrive?

Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
Netherlands / Belgium / Germany: 2–4 working days.
Other EU countries + UK: 4–8 working days.
Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the WJN500110 Air Bleed Valve do on a Land Rover diesel?

The WJN500110 is a bleed valve fitted to the fuel filter and sedimenter housing on diesel Land Rovers. It allows trapped air to be purged from the fuel circuit when priming the system after a filter change or other fuel work, restoring correct fuel delivery to the injectors.

When should the air bleed valve be opened on a Defender or Discovery 2 diesel?

Open the bleed valve after any fuel-system work that could introduce air: filter replacement, running the tank dry, or disconnecting fuel lines. On Defender (1987-2006) and Discovery 2 diesel engines, bleeding the system before starting prevents injection faults and hard starting.

Does WJN500110 cross-reference to WKB100330?

Yes. WJN500110 cross-references to WKB100330, confirmed in the item's alternative codes. WKB100330 may appear in older catalogue listings or workshop manuals; both codes identify the same bleed valve for the Defender and Discovery 2 diesel fuel filter housing.