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Subaru 25240KA041 Genuine Oil Pressure Switch

Subaru 25240KA041 Genuine Oil Pressure Switch

$25.34 USD
$25.34 USD
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✔ Subaru 25240KA041 Oil Pressure Switch — Genuine OEM Part
✔ Fitment: Subaru WRX, Legacy, Impreza, Forester, Outback, STI, and other select models with EJ, FA, and FB series engines
✔ Direct replacement for factory oil pressure switch — no modifications required
✔ Manufactured to Subaru's original specifications and tolerances
✔ Dual function — oil pressure warning and AVCS control on applicable models
✔ Genuine Subaru quality — reliable engine protection

 

Subaru 25240KA041 Genuine Oil Pressure Switch — for EJ, FA, and FB Series Engines

A continuously illuminated oil pressure warning light on the dashboard, a flickering oil light at idle, or an AVCS system malfunction — these are common signs that your oil pressure switch is failing. The oil pressure switch sends a signal to the dashboard to indicate when oil pressure drops below a safe level. On applicable models, it also works with the AVCS (Active Valve Control System) to adjust valve timing for optimal performance. A faulty switch can cause false warnings or fail to alert you to a real drop in oil pressure, which can lead to severe engine damage. Replacing it with this genuine Subaru part restores accurate oil pressure monitoring and AVCS function.

This is a factory‑original Subaru oil pressure switch (OE part number 25240KA041), designed for Subaru EJ, FA, and FB series engines. It is engineered to open and close at the correct pressure threshold, providing a reliable signal to the instrument cluster and AVCS system. This is the same part sold at Subaru dealerships.

 

When to Replace


When to Replace (Common Symptoms)
• Oil pressure warning light stays on constantly
• Oil pressure warning light flickers at idle
• AVCS system malfunction or performance issues
• No oil pressure reading on the gauge (if equipped)
• Oil pressure warning light does not turn on when ignition is turned to "ON"
• Oil leak from the switch body or threads
• The switch is cracked, corroded, or physically damaged

Product Details & Highlights


Product Highlights
• ✔ Genuine Subaru OEM — not an aftermarket or Chinese replica
• ✔ Calibrated to open/close at the correct pressure threshold
• ✔ Dual function — oil pressure warning and AVCS control
• ✔ Direct bolt‑on replacement — no adapters or modifications needed
• ✔ Made from corrosion‑resistant materials for long service life
• ✔ Backed by Subaru’s manufacturer warranty (valid through any authorized dealer)

Package Contents


Package Contents
• 1 × Subaru 25240KA041 oil pressure switch / AVCS sensor (genuine)

FAQ

FAQ

Is this a genuine Subaru part or a copy?
This is 100% genuine Subaru OEM — in original factory packaging with Subaru part number printed on the label. It is not an aftermarket brand or a replica.

Does this fit my 2015 Subaru WRX with the FA engine?
Yes — the 2015 WRX with the FA engine uses this switch. We recommend verifying with your VIN.

Does this fit my 2008 Subaru Forester with the EJ engine?
Yes — the 2008 Forester with the EJ engine uses this switch. Please verify with your VIN.

Does this fit my 2010 Subaru Legacy with the EJ engine?
Yes — the 2010 Legacy with the EJ engine uses this switch. Please verify with your VIN.

Can I reuse the old switch?
If the switch is in good condition and functions correctly, it can be reused. However, we recommend replacing it if the threads are damaged, the connector is corroded, or the switch no longer functions.

What is the torque spec for installation?
The typical torque spec is 15–20 Nm. Do not overtighten — the switch housing can crack.

Does this switch work with a mechanical gauge?
No — this is an on/off switch for the warning light only. If you have an oil pressure gauge, you need a different sender unit.

Can I install this myself?
Yes — it is a simple one‑bolt replacement. However, we recommend consulting your vehicle’s service manual for the correct installation procedure and torque specification.

Does this switch fit the Subaru STI?
Yes — the STI with the EJ engine uses this switch. Please verify with your VIN.

Does this switch fit the Subaru Outback?
Yes — the Outback with the FB or FA engine uses this switch. Please verify with your VIN.

Is this the same switch used in the Subaru Impreza?
Yes — the Impreza uses the same switch. Please verify with your VIN.

Does this switch come with a gasket or O‑ring?
This switch typically comes with a pre‑installed O‑ring or gasket. Check the packaging to confirm.

Does this switch fit the 2012 Subaru Forester?
Yes — the 2012 Forester with the FB engine uses this switch. Please verify with your VIN.

Does this switch fit the 2020 Subaru Impreza?
Yes — the 2020 Impreza with the FA engine uses this switch. Please verify with your VIN.

Does this switch fit the 2006 Subaru Legacy?
Yes — the 2006 Legacy with the EJ engine uses this switch. Please verify with your VIN.

What is the difference between this and an aftermarket switch?
This is a genuine OEM part, which means it is manufactured to Subaru's exact specifications and quality standards. Aftermarket switches may use different materials or may not fit as precisely.

Does this switch fit the 2018 Subaru Outback?
Yes — the 2018 Outback with the FB or FA engine uses this switch. Please verify with your VIN.

Does this switch fit the 2011 Subaru Forester?
Yes — the 2011 Forester with the FB engine uses this switch. Please verify with your VIN.

Does this switch fit the 2016 Subaru Impreza?
Yes — the 2016 Impreza with the FB engine uses this switch. Please verify with your VIN.

Does this switch fit the 2004 Subaru Legacy?
Yes — the 2004 Legacy with the EJ engine uses this switch. Please verify with your VIN.

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