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CAC4188-G - Non-Return Valve – Vacuum Hose

- €9,20
€9,20
€9,20 - €9,20
€9,20
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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 ATE
Non-Return Valve for the vacuum circuit.

Fitted inline in the vacuum hose, this one-way valve holds vacuum in the brake servo and vacuum reservoir line, allowing air to be drawn out towards the source while preventing it flowing back when engine vacuum drops.
Fitment Notes JAGUAR / DAIMLER — Non-return valve for vacuum hose (brake servo / A/C vacuum tank). Fits Daimler Limousine 1968-1992, Series III Saloon 1979-1992 (LHD & RHD), XJ6 (2.9/3.2/3.6/4.0), XJS. ATE.
Alternative Codes
CAC4188-GCAC4188

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 vacuum non-return valve do?
This one-way valve fits inline in the vacuum hose and holds vacuum in the brake servo and reservoir line. It lets air be drawn towards the source while stopping it flowing back when engine vacuum drops. This is the ATE valve.
Which vehicles does this vacuum non-return valve fit?
This ATE vacuum non-return valve fits the Daimler Limousine 1968-1992 and Jaguar Series III Saloon 1979-1992, XJ6 (2.9/3.2/3.6/4.0) and XJS. It serves the brake servo or A/C vacuum tank line. Check the hose routing before fitting.
What are the signs the vacuum non-return valve has failed?
A failed vacuum non-return valve usually shows as a hard brake pedal when the servo loses vacuum, or vacuum systems that bleed off at idle or once the engine stops. The valve is directional, so it must be fitted the correct way round.