×
- Hello
- Login or Register
- Quick Links
- Live Chat
- Track Order
- Parts Availability
- RMA
- Help Center
- Contact Us
- Shop for
- Subaru Parts
- Subaru Accessories
My Garage
My Account
Cart
Genuine Subaru Legacy Spark Plug
Ignition Spark Plug- Select Vehicle by Model
- Select Vehicle by VIN
Select Vehicle by Model
orMake
Model
Year
Select Vehicle by VIN
For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).
16 Spark Plugs found
Subaru Legacy Spark Plug
Part Number: 22401AA781$20.04 MSRP: $29.05You Save: $9.01 (32%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA670$14.96 MSRP: $21.68You Save: $6.72 (31%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA630$14.96 MSRP: $21.68You Save: $6.72 (31%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA751$16.11 MSRP: $23.35You Save: $7.24 (32%)Ships in 1-3 Business Days
Subaru Legacy Plug Spark
Part Number: 22401AA780$20.04 MSRP: $29.05You Save: $9.01 (32%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA95A$21.34 MSRP: $30.93You Save: $9.59 (32%)Ships in 1-3 Business Days
Subaru Legacy Plug-Spark
Part Number: 22401AA65A$11.16 MSRP: $15.50You Save: $4.34 (28%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA310$3.83 MSRP: $5.32You Save: $1.49 (29%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug 2.5L Platinum
Part Number: 22401AA570$10.99 MSRP: $15.27You Save: $4.28 (29%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA730$14.56 MSRP: $21.10You Save: $6.54 (31%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA550$3.83 MSRP: $5.32You Save: $1.49 (29%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA750$16.11 MSRP: $23.35You Save: $7.24 (32%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA580$12.16 MSRP: $16.88You Save: $4.72 (28%)Ships in 1-2 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA760$16.11 MSRP: $23.35You Save: $7.24 (32%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
Part Number: 22401AA450$3.83 MSRP: $5.32You Save: $1.49 (29%)Ships in 1-3 Business Days
Subaru Legacy Spark Plug
The Spark Plug of your Subaru Legacy is responsible for generating a spark that ignites the air-fuel mixture. A high voltage from the ignition coil enters the Spark Plug, jumps the gap between the central and side electrodes, and ignites the gas mixture. This causes the piston to move down and create power. The Spark Plug functions as a heat-exchanging device that directs excess heat away from the cylinder into the cooling system. The threaded shell of the plug is made out of metal to ensure secure seating. A ceramic insulator isolates the central electrode. The spacing between the two electrodes is precisely set. This spacing must withstand thousands of firings per minute at engine speed. A Spark Plug that works correctly allows the engine to burn gas in a clean manner, and the vehicle accelerates smoothly. In normal operating conditions, the component can be effective up to 50,000 miles, but electrodes wear with use, while pressure, temperature, and hydrocarbons gradually decrease effectiveness. If you notice an uneven idle, vibration, or hesitant acceleration in your Subaru Legacy, it could mean that your Spark Plug is going bad. You should get the Spark Plug replaced right away, or else unburned mixture can damage the catalytic converter. When this happens, your Subaru Legacy emissions compliance is compromised, as well as Subaru Legacy engine smoothness, which ultimately falls within its intended operating design.
Our website stands as the go-to online destination for OEM Subaru Legacy Spark Plug. With complete lines of genuine Subaru Legacy Spark Plug available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.
Subaru Legacy Spark Plug Parts Questions & Experts Answers
- Q: What are the necessary tools and steps for spark plug replacement on Subaru Legacy?A:Typically, the following tools are needed when replacing a spark plug, a spark plug socket that fits into a ratchet, a range of extensions and also a gap gauge for checking and adjusting the new plugs. A torque wrench should be used to secure the new plugs. The best method of changing these components is to get them first, regulate their gaps accurately and then replace one after another. However, let the engine cool before taking out any of the old plugs. Look at all your new plugs for defects and alter their gaps if possible. You insert the proper-thickness gage between electrodes at the tip of the plug to check its gap. There should be equal distance between both electrodes as indicated. If it's wrong, use adjuster on gauge body to slightly bend curved side electrode until correct gap is achieved. If you have turbo engines, remove battery and battery tray too. When fitted take off engine cover first then eliminate air intake ducts plus resonator or air filter housing on models obstructing access to spark plugs locations. Start with detaching individual Ignition Coils from turbo engines so as to get access to spark plugs. After removing one wire from one non-turbo engine, blow off any dirt or other foreign material inside that space if you are lucky enough to have compressed air with you around this time! Put the spark plug socket over it in order to remove it from its place by turning it anti-clockwise. To get an idea about how your engine has been running generally examine your chart with respect to this particular spark plug alone .Apply just a little amount of anti-seize compound on screw end of plugs .At least put one of those fresh units into socket until manual grip strength fades away; after that tighten using an electric wrench or similar hand tool set.Rotate-push down onto coil after reaching lug ensuring not touching ignition points at all before snapping it onto this spot for however many more times.Remove each wire to be sure in the case of a non-turbo engine. Carry out these same steps on all the remaining ones.
Related Subaru Legacy Parts
Browse by Year
2025 Spark Plug 2024 Spark Plug 2023 Spark Plug 2022 Spark Plug 2021 Spark Plug 2020 Spark Plug 2019 Spark Plug 2018 Spark Plug 2017 Spark Plug 2016 Spark Plug 2015 Spark Plug 2014 Spark Plug 2013 Spark Plug 2012 Spark Plug 2011 Spark Plug 2010 Spark Plug 2009 Spark Plug 2008 Spark Plug 2007 Spark Plug 2006 Spark Plug 2005 Spark Plug 2004 Spark Plug 2003 Spark Plug 2002 Spark Plug 2001 Spark Plug 2000 Spark Plug 1999 Spark Plug 1998 Spark Plug 1997 Spark Plug 1996 Spark Plug 1995 Spark Plug 1994 Spark Plug 1993 Spark Plug 1992 Spark Plug 1991 Spark Plug 1990 Spark Plug