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LR100354LR - Coolant Bypass Tube

- €66,40
€66,40
€66,40 - €66,40
€66,40
Genuine Part
Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.
Coolant Bypass Tube - water bypass tube serving the thermostat housing within the engine cooling circuit.

Fitted to the 5.0L V8 petrol engine, it routes coolant through the thermostat bypass path to regulate warm-up and circulation.
Vehicle Model Range Rover 2013-2022 (L405)
Range Rover Sport 2014-2022 (L494)
Fitment Notes Water by-pass tube, thermostat/housing. JLR comment: Tube Water By-Pass.
RANGE ROVER L405 2013-2022 — 5.0 Petrol AJ133 DOHC CDA only; (V)JA000001 to (V)JA999999
RANGE ROVER SPORT L494 2014-2022 — 5.0 Petrol AJ133 DOHC CDA only; (V)JA000001 to (V)JA999999
Alternative Codes
LR100354LR

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 does the coolant bypass tube do?
The coolant bypass tube routes coolant through the thermostat bypass path on the 5.0L V8 petrol engine (AJ133), serving the thermostat housing. It helps regulate warm-up and coolant circulation on the Range Rover L405 and Range Rover Sport L494.
Which vehicles and VINs does this bypass tube fit?
This coolant bypass tube fits the 5.0L AJ133 petrol Range Rover L405 (2013-2022) and Range Rover Sport L494 (2014-2022) within VIN range JA000001 to JA999999. Confirm your VIN, as cooling pipework varies across builds and engines.
Why does the coolant bypass tube need replacing?
The coolant bypass tube is usually replaced when it corrodes, splits or leaks coolant near the thermostat housing on the 5.0L V8. A leak here can lead to coolant loss and overheating, so it's renewed once a weep or crack appears.