ERR6434 - O-Ring – Water Rail

- €1,50

€1,50

€1,50 - €1,50

€1,50

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

O-Ring seals the water rail (coolant rail) joint within the cooling system of the 4.0L and 4.6L V8 EFI petrol engine.

Fitted at the water rail connection, the O-ring maintains a leak-free coolant seal between the rail and its mating port. Renew it whenever the water rail is disturbed, fitting it to clean, undamaged grooves and faces to prevent coolant seepage.

Vehicle Model Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic 1994-2001 (P38)

Fitment Notes DISCOVERY 2 1998-2004 — Water Rail, V8 petrol
RANGE ROVER P38 1994-2001 — Water Rail, 4.0L/4.6L V8 EFI Petrol

Alternative Codes

ERR6434

In stock 117 units

116 · 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 is the ERR6434 water rail O-ring and what does it do?

The ERR6434 O-ring seals the water rail, or coolant rail, joint on the 4.0L and 4.6L V8 EFI petrol engine. It keeps a leak-free coolant seal between the rail and its mating port in the cooling system.

Which vehicles use this water rail O-ring?

This water rail O-ring fits the Discovery 2 (1998-2004) with the V8 petrol engine and the Range Rover P38 (1994-2001) with the 4.0L and 4.6L V8 EFI petrol engine. It seals the coolant rail on these V8 applications.

When should the water rail O-ring be replaced?

Replace the water rail O-ring whenever the water rail is removed or disturbed. Fit the new O-ring to clean, undamaged grooves and faces, as a reused or nicked seal will let coolant seep from the rail joint.