ADU3905 - Screen Washer Pump

- €12,90

€12,90

€12,90 - €12,90

€12,90

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

Screen Washer Pump for the rear window wash circuit.

This electric pump draws washer fluid from the reservoir and delivers it under pressure to the rear screen wash jet when activated by the wash/wipe stalk or switch. It mounts directly to or within the washer fluid reservoir.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994

Fitment Notes DEFENDER 1986-2006 — Screen washer pump. Rear screen wiper / rear door application to (V)AA270226; windscreen washer (less air conditioning) (V)AA270227 to (V)WA159806; windscreen/backlight wash (less air conditioning) from (V)WA159806; windscreen/backlight/headlamp wash (V)AA270227 to (V)LA939975. Qty 1 per vehicle.
DISCOVERY 1 1989-1998 — Rear screen washer, and windscreen/headlamp washer. To (V)LA081991.
RANGE ROVER CLASSIC 1970-1994 — Pump and reservoir, with or without headlamp washer/wiper. JLR coverage listed 1986-1991, to VIN HA610293.

Alternative Codes

ADU3905RTC3959STC1453

In stock 11 units

9 · Gouda 2 · 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 Screen Washer Pump ADU3905 do on a Land Rover?

The ADU3905 is the rear screen wash electric pump that draws washer fluid from the reservoir and delivers it under pressure to the rear wash jet when activated. It's the rear circuit pump only, not the front screen wash pump. It fits Defender (from VIN AA270226, 1986-2006), Discovery 1 (to VIN LA081991), and Range Rover Classic (all).

Which VIN range does the ADU3905 Washer Pump fit on the Defender?

On the Defender, the ADU3905 fits from VIN AA270226 onwards. Defenders before this VIN may not have a rear screen wash system or use a different pump configuration. Cross-references are STC1453 and RTC3959.

What are the signs that the rear washer pump ADU3905 has failed?

A failed rear washer pump typically shows as no fluid reaching the rear screen when activated, while the reservoir has fluid. A working pump usually hums briefly when operated. No operation at all, or a pump that runs but produces no flow, typically indicates pump failure or a blocked feed line.