Subaru Impreza owners expect strong performance and long engine life. Clean engine oil plays a major role in making that happen. A high-quality oil filter removes dirt, metal particles, and sludge before they circulate through the engine. This small component protects critical parts and helps the engine run smoothly mile after mile.
Subaru boxer engines operate under tight tolerances and produce strong internal movement. Reliable filtration keeps oil clean and maintains stable lubrication under daily driving and demanding conditions. Poor filtration allows harmful debris to build up, which can reduce engine efficiency and shorten its lifespan.
Drivers who choose a dependable oil filter support better oil flow and stronger engine protection. High-grade filter media traps contaminants while durable construction prevents leaks and pressure loss. The right oil filter also matches Subaru’s oil pressure requirements and gasket design.
This guide highlights five oil filters that work well with Subaru Impreza models. Each option offers strong filtration, durability, and reliable performance for everyday driving.
5 Best Oil Filters for Subaru Impreza
Our Top 5 Best Oil Filters For Subaru Impreza Reviews – Expert Tested & Recommended
1. Subaru 15208AA21A Oil Filter
This genuine Subaru oil filter delivers factory-grade protection for your Impreza’s engine. Designed specifically for Subaru models from 2011–2025, it ensures precise fitment and reliable filtration performance.
Key Features That Stand Out
✓ Direct OEM replacement for part numbers 15208AA160, 15208AA15A, and 15208AA21A
✓ Compatible with Impreza, Outback, Legacy, Forester, Crosstrek, and Ascent
✓ Advanced filtration media captures microscopic contaminants
✓ Built-in anti-drain back valve prevents dry starts
✓ Durable steel construction resists pressure and heat
Why We Recommend It
As the original equipment manufacturer filter, this option offers peace of mind with exact specifications and proven reliability. It’s ideal for Impreza owners who want zero compromises on quality.
Best For
Daily drivers and long-term owners who prioritize OEM authenticity and maximum engine protection.
Pros and Cons
Pros:
- Exact factory fit no guessing or modifications needed
- Superior contaminant capture compared to generic filters
- Trusted by Subaru technicians and enthusiasts alike
- Includes integrated bypass valve for cold starts
Cons:
- Slightly higher price than aftermarket alternatives
- Limited availability at local auto parts stores
Customer Reviews
Customer Review: “👍 Solid oil filter! Installed it in my ride and it’s been smooth sailin’ ever since. Good price, easy to swap out, and does the job. 👍 Would recommend to anyone lookin’ for a reliable filter. Works like a charm! 🚗 Read more”
2. Subaru 15208AA21A Oil Filter 6PCS
Get six high-quality oil filters in one pack perfect for DIYers who change their own oil regularly. These filters match OEM specs and work across a wide range of Subaru models, including the Impreza.
Key Features That Stand Out
✓ Value-packed 6-pack for multiple oil changes
✓ Replaces OEM numbers 15208AA160, 15208AA15A, and 15208AA21A
✓ Fits Impreza, Forester, Outback, Crosstrek, and Ascent (2004–2025)
✓ All-steel construction with integrated bypass valve
✓ Consistent quality across every unit in the pack
Why We Recommend It
This bundle offers near-OEM performance at a fraction of the cost per filter. It’s our top pick for Impreza owners who do frequent maintenance and want to stock up without sacrificing quality.
Best For
DIY mechanics, multi-car households, and those planning long-term ownership of their Impreza.
Pros and Cons
Pros:
- Excellent cost-per-filter value
- Reliable performance matching genuine Subaru filters
- Convenient for scheduling regular oil changes
- Sturdy build with proper sealing gaskets
Cons:
- Not branded as “Genuine Subaru” (may concern purists)
- Bulk packaging takes up storage space
Customer Reviews
Customer Review: “If you are looking for a more economical answer to the genuine OEM filter but are not willing to compromise on all steel construction and integrated bypass valves, this may be the filter you’ve been looking for.I have two Subaru Outbacks, and I do my own oil changes on both. I cut one open to check”
Customer Review: “Just used one on a 2022 Subaru ascent and can confirm this is the same size and threads are good for that 2.4L turbo application. I also have a 2.5L 2016 forester that uses the same size filter as well so the 6 pack is nice to have for my needs.”
3. Subaru Oil Filter & Crush Gasket Kit – 3 Pack
This affordable kit includes three genuine Subaru oil filters plus crush gaskets everything you need for a complete oil change. It’s a smart buy for Impreza owners who want OEM parts without the dealership markup.
Key Features That Stand Out
✓ Includes 3x Genuine Subaru 15208AA21A filters
✓ Comes with 3x OEM crush gaskets (part #803916010)
✓ Designed for Impreza, Outback, Legacy, Forester, Crosstrek & Ascent
✓ Updated black filter design (newer than older blue versions)
✓ Removes microscopic pollutants effectively
Why We Recommend It
You get authentic Subaru quality at a budget-friendly price. The included crush washers ensure proper sealing and prevent leaks critical for turbocharged Imprezas.
Best For
Cost-conscious owners who still want factory-grade components and complete oil change kits.
Pros and Cons
Pros:
- Genuine Subaru filters no compatibility doubts
- Crush gaskets included save extra trips to the store
- Black filter design offers improved durability
- Great mid-range quantity for annual maintenance
Cons:
- Only 3 filters may not last multiple years for some users
- Slightly higher upfront cost than non-OEM packs
Customer Reviews
Customer Review: “Having owned several Subarus, I ensure to always use a factory oil filter. I especially like the black colored filters over the blue ones as they provide better quality and protection (this was reported on several Subaru blogs). I have experimented by cutting both a factory and a quality known brand”
Customer Review: “Perfect fit for my application. OE quality and dependability. Good price with quick shipping.”
4. Subaru Oil Filter & Crush Washer Kit – 2 Pack
A compact yet complete solution for Impreza owners who want two oil changes’ worth of genuine parts. This kit includes filters and washers ideal for quick top-offs or emergency backups.
Key Features That Stand Out
✓ 2x Genuine Subaru 15208AA21A oil filters
✓ 2x OEM crush washers (part #803916010)
✓ Updated black filter design for enhanced performance
✓ Fits all major Subaru models including Impreza (2011–2025)
✓ Compact packaging saves storage space
Why We Recommend It
Perfect for Impreza drivers who want spare parts on hand without buying in bulk. The inclusion of crush washers ensures every oil change is leak-free.
Best For
Occasional DIYers, college students with Imprezas, or as a backup kit for road trips.
Pros and Cons
Pros:
- Small but complete ideal for minimalists
- Genuine Subaru components guarantee fit and function
- Easy to store in trunk or garage
- Great for second cars or seasonal vehicles
Cons:
- Only two filters may run out quickly for frequent changers
- Higher per-unit cost than larger kits
Customer Reviews
Customer Review: “Having owned several Subarus, I ensure to always use a factory oil filter. I especially like the black colored filters over the blue ones as they provide better quality and protection (this was reported on several Subaru blogs). I have experimented by cutting both a factory and a quality known brand”
Customer Review: “Perfect fit for my application. OE quality and dependability. Good price with quick shipping.”
5. Subaru Oil Filter & Crush Washer Kit – 1 Pack
The single-pack version of Subaru’s official oil filter and washer combo. It’s perfect for one-time use or as a replacement when you’ve lost your spare.
Key Features That Stand Out
✓ 1x Genuine Subaru 15208AA21A oil filter
✓ 1x OEM crush washer (part #803916010)
✓ Black filter design for improved durability
✓ Exact fit for Impreza and other Subaru models
✓ Ideal for emergencies or first-time buyers
Why We Recommend It
If you just need one reliable filter with the right washer, this is the safest bet. No guesswork, no compatibility issues just factory perfection.
Best For
New Impreza owners, emergency replacements, or those trying OEM filters for the first time.
Pros and Cons
Pros:
- Authentic Subaru part zero risk of misfit
- Includes essential crush washer
- Compact and easy to store
- Great introduction to OEM quality
Cons:
- Most expensive per-unit option
- Not economical for regular changers
Customer Reviews
Customer Review: “Having owned several Subarus, I ensure to always use a factory oil filter. I especially like the black colored filters over the blue ones as they provide better quality and protection (this was reported on several Subaru blogs). I have experimented by cutting both a factory and a quality known brand”
Customer Review: “Perfect fit for my application. OE quality and dependability. Good price with quick shipping.”
Complete Buying Guide for Best Oil Filters for Subaru Impreza
Essential Factors We Consider
When selecting the best oil filter for your Subaru Impreza, we prioritize compatibility, filtration efficiency, build quality, and value. All recommended filters fit Impreza models from 2004–2025 and use the standard 15208AA21A specification.
We also verify that each filter includes a proper bypass valve and anti-drain back feature critical for protecting your boxer engine during cold starts. Genuine Subaru filters undergo rigorous testing, while high-quality aftermarket options must match or exceed OEM standards in independent lab tests.
Budget Planning
Oil filters for the Impreza range from under $10 for basic singles to around $60 for multi-packs. If you change your own oil every 6,000–7,500 miles, a 3- or 6-pack offers the best long-term value.
For those who rarely DIY, a single genuine Subaru filter ensures reliability without excess inventory. Remember: skipping the crush washer (included in most kits) can lead to leaks – so always replace it!
Final Thoughts
Your Subaru Impreza deserves a filter that keeps its horizontally opposed engine clean and running strong. Whether you choose the Best Choice OEM filter, the Editor’s Choice 6-pack for value, or a budget-friendly kit, sticking to trusted brands ensures peace of mind. Regular oil and filter changes are the cheapest insurance for your Impreza’s longevity don’t cut corners here.
Frequently Asked Questions
Q: What oil filter fits my Subaru Impreza?
A: Most Impreza models from 2004–2025 use the Subaru 15208AA21A oil filter (also replaces 15208AA160 and 15208AA20A). Always double-check your owner’s manual or use an online fitment tool before purchasing.
Q: Can I use a non-Subaru oil filter on my Impreza?
A: Yes but only if it’s a high-quality aftermarket filter that meets or exceeds OEM specs. Look for all-steel construction, a proper bypass valve, and verified compatibility. Our 6-pack recommendation is a great example of a reliable non-OEM option.
Q: Do I need a new crush washer with every oil change?
A: Absolutely! The crush washer (part #803916010) ensures a tight seal on the drain plug. Reusing it can cause leaks. Most kits above include them use a fresh one every time.
Q: How often should I change the oil filter in my Impreza?
A: Change the oil filter with every oil change typically every 6,000–7,500 miles for conventional oil or 7,500–10,000 miles with synthetic, depending on driving conditions.
Q: Are black Subaru oil filters better than blue ones?
A: Yes. Subaru updated their filter design from blue to black around 2018. The newer black filters feature improved materials and better heat resistance always choose the black version if available.