ETC4880 - Oil Pump Relief Valve Plunger by AftermarketEngine Part Land Rover Range Rover Defender, Discovery, Range Rover

ETC4880 - Plunjer voor oliepomp-overdrukventiel

- €3,60

€3,60

€3,60 - €3,60

€3,60

Tip: Log in to your account to unlock volume discounts on this item.

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

De overdrukventielplunjer van de oliepomp is het drukregelende onderdeel binnen de oliepompconstructie van de 2.5L 4-cilinder dieselmotor.

De plunjer schuift binnen de boring van het overdrukventiel die in het oliepompcarter is gefreesd. Wanneer de oliedruk de ontwerpdrempel overschrijdt - ingesteld door de veerkracht die op de plunjer werkt - komt de plunjer van zijn zitting en leidt overtollige stroom terug naar de oliecarter, waardoor overdruk van het smeercircuit wordt voorkomen. Slijtage of het vastlopen van de plunjer in zijn boring kan een onregelmatige oliedruk veroorzaken, waardoor vervanging noodzakelijk is om de juiste pompregulatie te herstellen.

Vehicle Model Land Rover Defender t/m 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic t/m 1994

Fitment Notes DEFENDER 1987-2006 — 2.5L 4-cilinder benzine
DISCOVERY 1 1989-1998 — 200TDi, tot VIN LA081991
RANGE ROVER CLASSIC 1992-1994 — 200TDi, vanaf VIN JA610294

Alternative Codes

ETC4880

In stock 3 units

3 · Gouda 0 · 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 Oil Pump Relief Valve Plunger do?

The Oil Pump Relief Valve Plunger is the pressure-regulating component inside the oil pump assembly on the 2.5 litre four-cylinder engine. It slides in the relief valve bore and lifts off its seat when oil pressure exceeds the spring-set threshold, bypassing excess flow back to the sump to prevent over-pressurising the lubrication circuit.

Why does the relief valve plunger need replacing?

The relief valve plunger needs replacing when it wears or sticks in its bore, which causes erratic oil pressure. A sticking plunger stops the oil pump regulating correctly, giving high or low pressure. Renewing it restores correct pump regulation, and it's typically replaced during an oil pump overhaul.

Which Land Rovers does this plunger fit?

This plunger fits the Defender (1987-2006), Discovery 1 (1989-1998, 200TDi up to VIN LA081991), and Range Rover Classic (1992-1994, 200TDi from VIN JA610294), all with the 2.5 litre four-cylinder engine. Use your VIN to confirm the engine and build, as the Discovery 1 and Range Rover Classic have VIN breaks.

Is fitting the relief valve plunger a DIY job?

Fitting the relief valve plunger typically means accessing the oil pump, which on these engines usually involves removing the front cover or pump assembly. It's more involved than a basic service item, so it's usually done during engine or oil pump work. Check the spring and bore condition while it's apart.