STC4104LUCAS - Oil Pressure Switch

- €23,50

€23,50

€23,50 - €23,50

€23,50

OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.

Brand Lucas

Oil Pressure Switch for the V8 petrol engine, forming part of the engine oil pressure warning circuit within the lubrication system.

The switch threads into the engine oil gallery and monitors lubrication pressure, operating its contacts to drive the dashboard oil pressure warning lamp when pressure falls below the set threshold. It provides the driver's primary indication of a loss of oil pressure.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Land Rover Discovery 2 1998-2004 (L318)
Range Rover Classic up to 1994
Range Rover Classic 1994-2001 (P38)

Fitment Notes DEFENDER 1986-2006 — V8 (3.5L twin carb, 4.0L EFI)
DISCOVERY 1 1989-1998 — V8 3.5 Petrol (twin carb, EFI)
DISCOVERY 2 1998-2004 — V8 4.0L EFI, from VIN XA231750
RANGE ROVER CLASSIC 1970-1994 — V8
RANGE ROVER P38 1994-2001 — V8

Alternative Codes

STC4104STC4104LUCAS50611586742AMR2092BR 0592NUC100310PRC6223PRC7204

In stock 12 units

9 · Gouda 3 · 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 STC4104 Oil Pressure Switch do on a Land Rover V8 engine?

The STC4104 oil pressure switch threads into the oil gallery of the Land Rover V8 petrol engine and monitors lubrication pressure. When pressure falls below the threshold, it completes the circuit to trigger the dashboard warning lamp, giving the driver an early alert to oil system failure.

Why does the oil pressure switch fail on a Land Rover V8?

The switch typically fails due to a perished internal diaphragm from heat cycling and vibration, causing either a permanently illuminated warning lamp or no warning at all during genuine low-pressure events. A false oil pressure warning on a V8 Defender or Discovery is a common symptom.

How do I confirm this switch fits my specific Land Rover?

This switch fits V8 petrol applications: Defender (1986-2006), Discovery 1, Discovery 2 from VIN XA231750, Range Rover Classic, and Range Rover P38. On Discovery 2, check the VIN. Early vehicles used a different switch. Diesel models need a different part.