STC4509 - O-Ring – Td5 Fuel Pressure Regulator

- €2,00

€2,00

€2,00 - €2,00

€2,00

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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 for the Td5 fuel pressure regulator.

This O-ring seals the fuel pressure regulator within the Td5 fuel system, maintaining a leak-tight joint at the regulator. Sold individually.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 2 1998-2004 (L318)

Fitment Notes DEFENDER & DISCOVERY 2 — TD5 Fuel Pressure Regulator O-Ring

Alternative Codes

STC4509

In stock 14 units

10 · Gouda 4 · 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 STC4509 O-ring used for?

The STC4509 O-ring seals the fuel pressure regulator on the Td5 diesel engine, keeping the joint at the regulator leak-tight. It sits within the Td5 fuel system and fits the Land Rover Defender and Discovery 2. It's a small but critical seal against fuel leaks.

Where does this O-ring sit in the Td5 fuel system?

This O-ring seals the Td5 fuel pressure regulator, which controls fuel pressure in the system. A perished or split O-ring typically causes fuel to weep or pressure to drop at the regulator, so a sound seal here matters for reliable running.

Can the O-ring be reused once the regulator is removed?

No, this O-ring is typically single-use. Once disturbed it takes a set and won't reseal reliably, risking a fuel leak. Fit a new one whenever the Td5 fuel pressure regulator is removed. It's sold individually.

Which Land Rover models does this O-ring fit?

This O-ring fits the Td5 Land Rover Defender and Discovery 2, which share the same fuel pressure regulator. Confirm your engine is the Td5 unit before ordering, as other fuel systems use different seals.