PCH117840 - Coolant Hose – Expansion Tank Vent by AllmakesCooling or Heating Part Land Rover Range Rover Defender, Discovery, Range Rover

PCH117840 - Koelvloeistofslang – Ontluchting Expansievat

- €16,90

€16,90

€16,90 - €16,90

€16,90

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

Koelvloeistofslang - Ontluchting Expansievat is de ontluchtingsslang in het motorkoelsysteem, die de ontluchtingsuitlaat van de radiateur verbindt met het koelvloeistofexpansievat.

Het vormt de ontluchtingsleiding van het koelcircuit, waardoor vastzittende lucht en kleine hoeveelheden koelvloeistof terug kunnen stromen naar het expansievat. Dit ondersteunt het correct vullen en ontluchten van het systeem en helpt een stabiele koelvloeistofcirculatie te handhaven.

Vehicle Model Land Rover Defender t/m 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic t/m 1994

Fitment Notes DEFENDER 1983-2006 — ontluchtingsslang expansievat, 2.5L TDi (geen EEGR)
DISCOVERY 1 1989-1998 — ontluchtingsslang expansievat
RANGE ROVER CLASSIC 1970-1994 — ontluchtingsslang expansievat

Alternative Codes

PCH117840PCH117840XESR2348ESR2661ESR3436PDL100000

In stock 3 units

2 · 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 PCH117840 expansion tank vent hose do?

The PCH117840 is the bleed or vent hose in the cooling system. It connects the radiator bleed outlet to the coolant expansion tank, letting trapped air and small amounts of coolant pass back to the tank. This supports correct filling and bleeding and steady coolant circulation.

Which Land Rovers does this vent hose fit?

This vent hose fits the Land Rover Defender (2.5L TDi Non-EGR), Discovery 1 (1989-1998) and Range Rover Classic. The Defender fitment is the Non-EGR 2.5L TDi specifically, so confirm your engine before ordering, as EGR-equipped variants can differ.

Are there alternative part numbers for this hose?

Yes, this hose is cross-referenced as ESR3436, ESR2348, ESR2661 and PDL100000. Any of these numbers identifies the same expansion tank bleed hose, which helps when matching against an old part or another supplier's catalogue listing.

What happens if this vent hose fails?

A perished or split vent hose lets air into the cooling system and can cause coolant loss, making the system hard to bleed and prone to airlocks or overheating. Cracks, hardening or weeping at the tank or radiator end mean it's time to replace it.