OE-Style Heater/Coolant Hose Adaptor
The 624091 Coolant Pipe Adaptor provides a reliable connection point for your heater/coolant hose on classic Land Rover engines. Commonly used at the rear of the cylinder head on 200Tdi/300Tdi and on thermostat housings of earlier 4-cylinder petrol/diesel engines, it restores a leak-free, factory-style hookup for the heater circuit.
Why This Part:
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Direct-fit adaptor for classic Land Rover heater circuits
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Restores proper hose routing and seal
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Durable construction suited for daily use and overland travel
Fitment & Compatibility:
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Series IIA/III – 4-cyl petrol & diesel (thermostat housing)
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Defender 90/110/130 – 200Tdi & 300Tdi (rear cylinder head); also earlier 2.25/2.5 applications
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Discovery I (1989–1998) – 200Tdi & 300Tdi
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Range Rover Classic (1970–1995) – 200Tdi & 300Tdi
Not used on Discovery II (1999–2004). Actual location varies by engine—verify before installation.
FAQ:
Where does it install on a 300Tdi?
At the rear of the cylinder head, providing the heater hose take-off.
Do I need a sealing washer?
Yes. A new copper sealing washer is typically required for a leak-free seal.
Will this fit my Discovery II?
No. Discovery II uses different coolant fittings and routing.
Part Number: 624091
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