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ERR1223 - Hot spot 2.5DNA 2.5TD by AftermarketEngine Part Land Rover Range Rover Defender

ERR1223 - Hot Plug – 2.5NA & 2.5TD

- €23,30
€23,30
€23,30 - €23,30
€23,30
Aftermarket Part
Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.
Hot Plug is the pre-combustion chamber insert, or hot spot, seated in the cylinder head of the 2.5L 4-cylinder naturally aspirated and 2.5L 4-cylinder turbo diesel engines.

Used in the indirect-injection combustion system, it forms the swirl chamber into which the injector sprays fuel, promoting atomisation and controlled combustion before the charge passes into the main cylinder bore.
Vehicle Model Land Rover Defender up to 2016
Fitment Notes DEFENDER 1987-2006 — Hot plug, cylinder head; 2.5L 4cyl NA diesel & 2.5L 4cyl turbo diesel
Alternative Codes
ETC8620ERR1223BR 3567ERC8649

In stock 8 units
6 · Gouda 2 · 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 ETC8620 hot plug do on a Land Rover 2.5 diesel?
The ETC8620 hot plug is the pre-combustion chamber insert that seats in the cylinder head of the 2.5L naturally aspirated and 2.5L turbo diesel engines. Fuel is injected into this swirl chamber, where it atomises and starts burning before the charge passes into the main cylinder. It's central to the indirect-injection combustion system.
How many hot plugs are needed for a full engine rebuild?
Hot plugs are typically fitted one per cylinder, so the 2.5L 4-cylinder diesel usually needs four for a complete set. They're normally replaced together during a cylinder head overhaul on the 2.5 NA and 2.5 TDi engines, since mixing old and new inserts can affect combustion consistency.
Why do hot plugs fail on the 2.5 diesel engine?
Hot plugs fail from thermal fatigue and cracking after long exposure to combustion heat and pressure in the 2.5 NA and 2.5 TDi cylinder head. A cracked or eroded hot plug can cause hard starting, rough running and loss of compression. They're typically inspected and renewed whenever the cylinder head is off.
Does the ERR1223 number relate to this hot plug?
Yes, ERR1223 is the Land Rover reference for this hot plug, and ERC8649 is a listed alternative code. Both refer to the same pre-combustion insert for the 2.5 NA and 2.5 TDi engines. Checking these numbers against your old part helps confirm you're ordering the correct hot plug.

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