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ERC9220 - Dome Nut Hardware Part Land Rover Range Rover Defender

ERC9220 - Dome Nut

- €5,90
€5,90
€5,90 - €5,90
€5,90
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OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Dome Nut securing the rocker cover to the cylinder head.

This M8 domed nut clamps the rocker (cam) cover down onto its gasket, the closed dome capping the stud. Used on 2.25L and 2.5L petrol and 2.5L diesel (naturally aspirated and turbo) four-cylinder engines.
Vehicle Model Land Rover Defender up to 2016
Alternative Codes
ERC9220

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

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 ERC9220 dome nut used for?
The ERC9220 dome nut secures the rocker (cam) cover to the cylinder head. The closed dome caps the stud and clamps the cover down onto its gasket, sealing the top of the engine. It's fitted to Land Rover Defender models up to 2016 with the four-cylinder petrol and diesel engines.
How many dome nuts are needed for a rocker cover job?
Typically one dome nut sits on each rocker cover stud, so a full cover usually needs several. The exact count depends on your engine, so check how many studs your rocker cover has before ordering. They're sold individually, so order the full set if you're refreshing all of them during a gasket change.
Should the dome nuts be replaced when changing the rocker cover gasket?
Dome nuts can usually be reused if they're clean and the threads are undamaged. It's common to replace them when they're corroded or the dome is pitted, since a clean seat helps clamp the cover evenly onto its gasket. Swapping them while the rocker cover is off is cheap insurance against leaks.