2017 Subaru Legacy Ignition Sensors
Keep Your 2017 Subaru Legacy in Top Shape with Quality Ignition Sensors
Whether you’re repairing or upgrading your Ignition Sensor, using high-quality parts is key to keeping your 2017 Subaru Legacy looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Knock Sensors. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 2017 Subaru Legacy Ignition Sensor at Advance Auto Parts is around $112.76, with a range that starts at $63.99 and goes up to $169.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Knock Sensor, Ignition Knock (Detonation) Sensor, and Engine Knock Sensor And Harness Kit start at just $63.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Ignition Sensor, don’t forget to check out other key components like Ignition Coils and Boots and Spark Plugs. At Advance Auto Parts, we’re here to help you keep your 2017 Subaru Legacy in peak condition, inside and out.
Find Your Specific 2017 Subaru Legacy Ignition Sensors
Looking for the perfect Ignition Sensor for your 2017 Subaru Legacy? You’re in the right place. Below, you’ll find links to various types of Ignition Sensors that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Ignition Sensors, ensuring durability and a precise fit for your Subaru Legacy. Whether you’re driving a 2017 model or another popular model year like
2010,
2011,
2012,
2013,
2014,
2015,
2016,
2018, and
2019, we’ve got you covered. Purchasing Ignition Sensors from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Ignition Sensors that fit your vehicle.
Essential 2017 Subaru Legacy Ignition Sensors
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBC3697)
from
$41.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA4304)
from
$89.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Carquest Premium – Knock Sensor (Part No.EKC1038)
from
$105.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA4303)
from
$104.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3677)
from
$53.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBC3742)
from
$103.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Knock Sensor (Part No.SBC3761)
from
$56.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Knock Sensor (Part No.SBC3975)
from
$158.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Knock Sensor (Part No.SBC3818)
from
$82.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Knock Sensor (Part No.SBC3762)
from
$95.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Delphi – Knock Sensor (Part No.AS10092)
from
$96.99
Delphi’s ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We offer a wide range of sensors, including ABS, camshaft, crankshaft, knock, EGT, MAP, temperature, throttle position, and vehicle speed sensors for a variety of vehicle applications. All of our sensors are tested and calibrated to OE standards, ensuring accurate readings, which helps to reduce comebacks.
Product Features:
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Product Features:
- Delphi knock sensors help maximize engine performance with all fuels
- Delphi knock sensors prevent against engine damage from pre-ignition knocking
- Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
- Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
- Ground-isolated design with two-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
- Self-generating piezoelectric design requires no power to the sensor
Carquest Premium – Knock Sensor (Part No.SBC3964)
from
$99.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA5405)
from
$169.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Dorman – Engine Knock Sensor And Harness Kit (Part No.962-701)
from
$63.99
Check engine light on and vehicle running rough? Could be a failed knock sensor. This ignition knock sensor kit combines both necessary sensors and the wiring harness that joins them for a complete repair in one package.
Product Features:
See More
Product Features:
- Complete solution – this knock sensor kit includes two knock sensors and the wiring harness that connects them
- Plug-and-play installation – matches original wiring harness, requiring no cutting or splicing
- Quality assured – benchmarked against original components for performance and quality
- Excellent value – original equipment quality at significant cost savings
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.EKA1047)
from
$107.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Popular 2017 Subaru Legacy Ignition Sensors Categories
Most Popular Knock Sensors for 2017 Subaru Legacies
Enhance your 2017 Subaru Legacy with one of the 3 Knock Sensors we have in stock, starting at just $63.99.
Carquest Premium – Knock Sensor (Part No.EKC1038)
from
$105.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
Product Features:
See More
Product Features:
- Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
- Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
- Designed to meet or exceed all OEM specifications in fit, form & function
- Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA5405)
from
$169.99
Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Trivalent iridescent chromate plating prevents corrosion
- Silicone seals prevent moisture intrusion preventing false codes and sensor failure
- Wiring harnesses utilize high-temperature insulation when applicable
- Extensive design validation testing and 100% end-of-line tested
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Dorman – Engine Knock Sensor And Harness Kit (Part No.962-701)
from
$63.99
Check engine light on and vehicle running rough? Could be a failed knock sensor. This ignition knock sensor kit combines both necessary sensors and the wiring harness that joins them for a complete repair in one package.
Product Features:
See More
Product Features:
- Complete solution – this knock sensor kit includes two knock sensors and the wiring harness that connects them
- Plug-and-play installation – matches original wiring harness, requiring no cutting or splicing
- Quality assured – benchmarked against original components for performance and quality
- Excellent value – original equipment quality at significant cost savings
FAQs for 2017 Subaru Legacy Ignition Sensors
What are the best-selling Ignition Sensors for 2017 Subaru Legacies?
Out of 3 Ignition Sensors that fit 2017 Subaru Legacies, the following parts are the top sellers:
- Knock Sensor (12424522) – $105.99
- Ignition Knock (Detonation) Sensor (50044875) – $169.99
- Engine Knock Sensor And Harness Kit (50247601) – $63.99
What’s the price range for 2017 Subaru Legacy Ignition Sensors?
The prices of Ignition Sensors for the 2017 Subaru Legacy range from $63.99 up to $169.99 for the most premium parts.
What is the average price of an Ignition Sensor for a 2017 Subaru Legacy?
The average price for Ignition Sensors for the 2017 Subaru Legacy is $112.76. Keep in mind the variety of part types within our Ignition Sensor category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Ignition Sensors for other Subaru Legacy model years?
What are the cheapest Ignition Sensors for my 2017 Subaru Legacy?
The cheapest 2017 Subaru Legacy Ignition Sensors we carry are:
- Engine Knock Sensor And Harness Kit (50247601) – $63.99
- Knock Sensor (12424522) – $105.99
- Ignition Knock (Detonation) Sensor (50044875) – $169.99
Does Advance Auto Parts sell Ignition Sensors for any other 2017 Subaru models?
Yes. We stock Ignition Sensors for 6 other popular 2017 Subaru models. Some of the most popular are 2017 Outback Ignition Sensors, 2017 Forester Ignition Sensors, 2017 WRX Ignition Sensors, 2017 Crosstrek Ignition Sensors, and 2017 WRX STI Ignition Sensors.
What types of Ignition Sensors do you sell for my 2017 Subaru Legacy?
We currently have just 1 Ignition Sensor in stock for a 2017 Subaru Legacy, and as of 11/2/25, it is a Knock Sensor.
Can I get help with 2017 Subaru Legacy Ignition Sensor orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Subaru Ignition Sensors and more.
What is your return policy for Subaru Legacy Ignition Sensors?
Advance Auto Parts keeps returns simple. For new Subaru Legacy Ignition Sensors and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.