250830 - Welch Plug Engine Part Land Rover Range Rover Defender, Series

250830 - Kernplug – Cilinderkop – 7/8"

- €0,40

€0,40

€0,40 - €0,40

€0,40

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Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.

Kernplug - Cilinderkop Een kernplug (welch/uitzetplug) met een diameter van 7/8" die een gietkernopening in de cilinderkop afdicht.

Deze sluit de openingen af die tijdens het gietproces in de koelmiddelkanalen van de kop zijn ontstaan en fungeert als vorstplug, die onder druk meegeeft als het koelmiddel bevriest. Gebruikt bij viercilinder-dieselmotoren.

Vehicle Model Land Rover Defender tot 2016
Land Rover Series 2 en 3

Fitment Notes SERIE II 1958-1961 — 2.0 Dieselmotor
SERIE IIA 1961-1971 — 2.25 Dieselmotor
SERIE III 1971-1985 — 2.25 Dieselmotor
DEFENDER 1987-2006 — 2.5L 4 Cilinder NA Diesel en 2.5L 4 Cilinder Turbo Diesel, cilinderkop kernplug 7/8" diameter

Alternative Codes

10003443250830

In stock 46 units

46 · 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 is the cylinder head core plug for?

The 7/8 inch cylinder head core plug (250830) seals a casting core hole in the cylinder head's coolant passages. It also acts as a frost plug, designed to push out and relieve pressure if the coolant freezes, helping protect the head from cracking.

Which engines does this 7/8 inch core plug fit?

This 7/8 inch core plug (250830) fits the four-cylinder diesel cylinder heads used on Land Rover Series 2 and 3 and Defender up to 2006. Confirm the plug diameter matches the recess in your head before fitting.

Why do cylinder head core plugs need replacing?

Cylinder head core plugs typically fail through internal corrosion, weeping coolant around the edge or after being pushed out by frost. Replacing them during a head overhaul is common practice, since access is easy with the head off and a leak later means removing it again.

How many core plugs are usually needed?

A cylinder head usually has several core plugs of differing sizes. This 7/8 inch plug covers one size only, so check how many 7/8 inch openings your head has and whether other diameters are also needed before ordering.

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