ERR3539G - Vacuum Pump – Brake System Assistance
This vacuum pump provides negative pressure for the brake assistance system, supporting consistent brake servo operation where engine vacuum is insufficient.
The unit is designed as a direct replacement pump in the brake vacuum circuit and is supplied as a complete pump assembly in the standard configuration shown.
Supplied by Unipump as an OEM replacement component, this pump is intended for diesel engine applications requiring a mechanically driven brake vacuum source. No additional modifications or alternative configurations are stated.
Key Details:
Part type: Brake vacuum pump
Function: Brake servo vacuum supply
Configuration: Complete pump assembly
Supplier: Unipump
Compatibility and fitment are limited to specific applications including Defender 300Tdi (1987-2006), Discovery 1 300Tdi (1989-1998), and Range Rover Classic 300Tdi. Fitment should always be confirmed against the original part number ERR3539G and the vehicle's exact specification before installation.
All product codes / identifiers:
ERR3539 ERR3539G ERR3539G ERR3539Z
Models:
Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994
Fitment Notes:
DEFENDER 1987 - 2006 Vacuum Pump 2.5L I4 300 TDi Diesel Turbo LR
DISCOVERY 1 1989 - 1998 (From FA393361 to WA799999) CLASSIC Vacuum Pump 2.5 Tdi EGR (Gem),2.5L 300 Tdi (V)MA081992
RANGE ROVER CLASSIC 1992 - 1994 (From JA610294) CLASSIC Vacuum Pump 2.5L TDi
In stock — ready to ship
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Gouda warehouse: 6
Drachten warehouse: 0
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.
Split shipments: items may ship from multiple warehouses at no extra cost.