546440 - Oil filler breather cap Series by AftermarketEngine Part Land Rover Range Rover Series

546440 - Oil Filler Breather Cap – Top-Hat Type

- €78,10

€78,10

€78,10 - €78,10

€78,10

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

Oil Filler Breather Cap of the top-hat type closes the oil filler on the cylinder head side cover and vents the crankcase.

It combines the oil filler cap with a crankcase breather: as the cap seals the filler neck, its internal gauze allows crankcase pressure to vent while filtering the escaping air. The breather label is supplied loose for application.

Vehicle Model Land Rover Series 1
Land Rover Series 2 and 3

Fitment Notes SERIES I — all engines
SERIES II/IIA — 2.0L Diesel, 2.0L Petrol, 2.25 Petrol
SERIES III
Cylinder head side cover / oil filler breather, top-hat type

Alternative Codes

546440

In stock 7 units

6 · Gouda 1 · 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 filler breather cap do?

The oil filler breather cap combines the oil filler cap with a crankcase breather. It seals the filler neck on the cylinder head side cover, while its internal gauze lets crankcase pressure vent and filters the escaping air. The breather label is supplied loose.

Which models does this top-hat breather cap fit?

This top-hat breather cap fits the Land Rover Series I, Series II, IIA and Series III, mounting on the cylinder head side cover oil filler. On Series II and IIA it suits the 2.0L and 2.25 petrol and 2.0L diesel engines.

Why would the oil filler breather cap need replacing?

Replace the breather cap when its internal gauze is clogged with oil mist or the seal has hardened. A blocked breather typically raises crankcase pressure, which can push oil past seals and gaskets and cause leaks.