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ERR1729 - Hose by AllmakesCooling or Heating Part Land Rover Range Rover Defender

ERR1729 - Hose

- €73,20
€73,20
€73,20 - €73,20
€73,20
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.
Hose for the crankcase breather (cyclone oil separator) of the 2.5-litre naturally aspirated diesel and 200TDi engines.

It carries crankcase blow-by gases from the cyclone oil separator to the air cleaner, returning the fumes to the intake while the cyclone separates the entrained oil.
Vehicle Model Land Rover Defender up to 2016
Fitment Notes DEFENDER 1987-2006 — 2.5L 4-Cyl NA Diesel, 2.5L 200TDi
Alternative Codes
ERR1729

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 ERR1729 hose for?
The ERR1729 is the crankcase breather hose for the cyclone oil separator on the 2.5-litre naturally aspirated diesel and 200TDi engines. It carries crankcase blow-by gases from the cyclone separator to the air cleaner while the cyclone strips out the entrained oil.
Why does this breather hose fail, and when should it be replaced?
Breather hoses typically perish, harden, or split with age, heat, and oil exposure. Replace it if it's cracked, soft, or leaking oil mist around the joints. A failed breather hose lets unfiltered fumes escape and upsets crankcase ventilation.
Where does this hose connect?
This hose connects the cyclone oil separator to the air cleaner on the 2.5-litre naturally aspirated diesel and 200TDi engine, routing crankcase fumes back into the intake. It's part of the crankcase breather system, not a coolant or fuel line.
Does this hose fit my vehicle?
This breather hose fits the Land Rover Defender (1987-2006) with the 2.5-litre four-cylinder naturally aspirated diesel or 200TDi engine. Confirm your engine type, as the breather routing differs on later Tdi engines.