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104123593LR - Tube - By-Pass by JLR Land Rover Range Rover

104123593LR - Bypass Tube

- €340,00
€340,00
€340,00 - €340,00
€340,00
OEM Part
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 JLR
Bypass Tube for the engine cooling circuit, forming part of the coolant routing on the engine.

The tube carries coolant along its bypass path so circulation is maintained while the thermostat is closed during warm-up. Fits the 3.0L AJ20P6 petrol engine.
Vehicle Model Land Rover Defender New 2020+
Land Rover Discovery 5 2017+ (L462)
Range Rover 2022+ (L460)
Range Rover Sport 2014-2022 (L494)
Range Rover Sport 2023+ (L461)
Range Rover Velar 2017+ (L560)
Fitment Notes JAGUAR F-PACE 2016> — 3.0L AJ20P6 Petrol High, from VIN MA000001 (By-Pass Tube)
DISCOVERY 5 2017> — 3.0L AJ20P6 Petrol High (Nitra build), from VIN L2000001
NEW DEFENDER 2020 (L663) — 3.0L AJ20P6 Petrol High (Nitra build), from VIN L2000001
NEW RANGE ROVER 2022 (L460) — 3.0L AJ20P6 Petrol High / PHEV
NEW RANGE ROVER SPORT 2023 (L461) — 3.0L AJ20P6 Petrol High / PHEV
RANGE ROVER SPORT 2014-2022 (L494) — 3.0L AJ20P6 Petrol High, from VIN KA000001
RANGE ROVER VELAR 2017> — 3.0L AJ20P6 Petrol High, from VIN MA000001
Serviced as Heater Water Hose on some models.
Alternative Codes
104123593LR104123593

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

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 bypass tube used for on the 3.0 AJ20P6 engine?
The bypass tube carries coolant along a bypass path on the 3.0L AJ20P6 petrol engine, keeping circulation going while the thermostat is closed during warm-up. This helps the engine reach operating temperature evenly. On some models it's serviced as a heater water hose.
Which vehicles does this bypass tube fit?
This bypass tube fits the 3.0L AJ20P6 petrol engine in the New Defender L663 (2020+), Discovery 5 (2017+), Range Rover L460 (2022+), Range Rover Sport L494 (2014-2022) and L461 (2023+), and Range Rover Velar (2017+). It also fits the Jaguar F-PACE. Confirm with your VIN.
When does a coolant bypass tube need replacing?
A coolant bypass tube typically needs replacing when it cracks, perishes, or leaks at its connections, causing coolant loss or slow warm-up. Inspect it whenever coolant is low with no obvious external leak elsewhere, since bypass routing sits deeper in the engine bay.