549702 - Core Plug

- €1,70

€1,70

€1,70 - €1,70

€1,70

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

Core Plug seals a casting aperture in the cylinder block or head of the 2.25L and 2.5L four-cylinder petrol engines.

Also known as an expansion or freeze plug, it closes the holes left in the casting after the sand cores are removed during manufacture, sealing the surrounding coolant galleries. Renew when a plug corrodes or weeps, or as a matter of course during an engine rebuild.

Vehicle Model Land Rover Defender up to 2016
Land Rover Series 2 and 3

Fitment Notes DEFENDER — core plug, 2.25L and 2.5L petrol engines
SERIES 2 & 3 — core plug, 2.25L petrol engine

Alternative Codes

549702

In stock 146 units

106 · Gouda 40 · 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 a core plug do in a Land Rover engine?

A core plug seals a casting aperture in the cylinder block or head of the 2.25L and 2.5L four-cylinder petrol engines. Also called an expansion or freeze plug, it closes the holes left after the sand casting cores are removed and seals the surrounding coolant galleries.

How many core plugs are usually needed?

An engine typically has several core plugs spread along the block and cylinder head. If one has corroded through it's common practice to replace the others at the same time, since they're the same age, and to do the full set during an engine rebuild.

Why do core plugs fail on these engines?

Core plugs usually fail through internal corrosion, often when coolant has been left too long or run without enough inhibitor. A corroded plug starts to weep or blow out, causing coolant loss. Renew any plug that's weeping, and ideally the surrounding ones too.

Which Land Rovers use this core plug?

This core plug suits the Land Rover Defender and Series 2 and 3 fitted with the 2.25L or 2.5L four-cylinder petrol engine. Check which engine your vehicle has before ordering, as core plug sizes vary between different engine castings.