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STC4198A - Boost Control Solenoid Valve

Original price - Original price €88,50
Original price
€88,50
€88,50 - €88,50
Current price €88,50
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 Autotec Components
Boost Control Solenoid Valve - an electro-pneumatic vacuum switching valve in the engine vacuum control circuit.

The solenoid is energised by the engine management ECU and modulates the vacuum supply passed on to a diaphragm actuator, working either as the turbocharger boost control valve or as the EGR vacuum regulator depending on the installation. It is plumbed between the vacuum source and the actuator, with its electrical connector on the valve body.

Typical failure symptoms are loss of boost control, an EGR valve that no longer opens or closes cleanly, and related engine management fault codes.
Vehicle Model Land Rover Freelander 1 1996-2006 (L314)
Range Rover Classic 1994-2001 (P38)
Range Rover 2002-2012 (L322)
Fitment Notes FREELANDER 1 1997-2006 — Td4 2.0L I4 16V Diesel (M47); turbocharger vacuum control / EGR vacuum regulator solenoid
RANGE ROVER P38 1994-2001 — 2.5L 6 Cyl BMW Diesel; EGR vacuum regulator
RANGE ROVER L322 2002-2009 — M57 D30 3.0L BMW Diesel; EGR vacuum regulator solenoid
Alternative Codes
STC4198ASTC4198

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 dayscontact us before ordering.

Job kits containing this part

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Frequently asked questions

What does the STC4198A boost control solenoid valve do?
The STC4198A is a vacuum control solenoid that regulates turbocharger boost and EGR on diesel Land Rovers. It switches vacuum to the turbo actuator or EGR valve on the engine's command, controlling boost pressure and exhaust gas recirculation. It's fitted to BMW-derived diesel engines.
Which models does this solenoid fit?
This solenoid fits the Freelander 1 Td4 2.0 diesel (M47), Range Rover P38 2.5 six-cylinder BMW diesel, and Range Rover L322 M57 3.0 BMW diesel. On the Freelander it controls turbo boost; on the Range Rover diesels it regulates EGR vacuum. Confirm your engine before ordering.
What are the signs this boost control solenoid needs replacing?
A failed boost control solenoid typically causes turbo boost problems, an EGR fault code, limp mode, or an engine warning light. The solenoid can stick or lose its vacuum seal over time. Replacing it usually restores correct boost and emissions control on these diesel engines.