ERR4686BLUE - Filler plugs blue anodised aluminium by AftermarketCooling or Heating Part Land Rover Range Rover Defender, Discovery, Range Rover

ERR4686BLUE - Vulplug – Blauw geanodiseerd aluminium

- €8,70

€8,70

€8,70 - €8,70

€8,70

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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.

Vulplug in blauw geanodiseerd aluminium, ter vervanging van de standaard vul- en blindplug van het koelsysteem bij de thermostaatbehuizing.

Sluit af tegen een meegeleverde O-ring. De geanodiseerde legeringsafwerking is bestand tegen corrosie in de motorruimte. Dient ook als aftap- en vulplug voor het koelsysteem bij V8 benzinemotoren.

Vehicle Model Land Rover Defender tot 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic tot 1994
Range Rover Classic 1994-2001 (P38)

Fitment Notes DEFENDER 1986-2006 — 300 TDi, thermostaathuis plug
DISCOVERY 1 1989-1998 — 300 TDi, thermostaathuis plug
RANGE ROVER CLASSIC 1992-1994 — 300 TDi, thermostaathuis plug
RANGE ROVER P38 1994-2001 — 4.0L/4.6L V8 Benzine, radiator-/koelsysteem aftap-/vulplug
Blauw geanodiseerde lichtmetalen sierplug, inclusief O-ring

Alternative Codes

ERR4686BLAUW

In stock 9 units

9 · 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 ERR4686BLUE filler plug used for?

The ERR4686BLUE filler plug replaces the standard cooling system filler and blanking plug at the thermostat housing. It's a blue anodised aluminium plug that seals against a supplied O-ring, resisting corrosion in the engine bay while tidying the cooling system's appearance.

Which Land Rovers does this filler plug fit?

This filler plug fits the 300 TDi Defender, Discovery 1 and Range Rover Classic at the thermostat housing, and the Range Rover P38 4.0L/4.6L V8 as a radiator cooling system drain-filler plug. Check which plug your engine uses before ordering.

Does the ERR4686BLUE come with a seal?

Yes, the ERR4686BLUE includes an O-ring, so it seals the cooling system without needing a separate gasket. Fit the O-ring lightly lubricated with coolant and tighten by hand plus a nip, since it's an aluminium plug into an alloy housing and can strip if overtightened.