OEM vs. Aftermarket: Why Speedway Subaru Sticks With Subaru Genuine Parts

Original Equipment Manufacturer vs. Aftermarket: Why Speedway Subaru Sticks With Subaru Genuine Parts

Every Subaru owner faces a dilemma when it's time for maintenance. Should you pay for genuine original equipment manufacturer (OEM) Subaru parts or save a few dollars with aftermarket options? This decision affects your car's performance, safety, and long-term value more than most drivers realize. Here at Speedway Subaru, we steer our customers toward genuine OEM Subaru parts — and not just because we sell them. There are solid technical and financial reasons behind this recommendation. Discover why factory-made components make such a difference for your Subaru and how this choice impacts everything from your warranty to your car's resale value.

Understanding Subaru OEM Parts: Engineering Excellence by Design

Subaru's BOXER engine design is unlike anything else on the road. The FB engine, the latest in the BOXER series, features a wider piston stroke and smaller bore, which boosts torque and improves fuel efficiency. This precision demands parts built to exact specifications that work perfectly with the engine's unique sideways layout. Factory Subaru parts undergo the same rigorous testing as original components.

These parts integrate seamlessly with Subaru's symmetrical all-wheel drive and EyeSight safety technology. Subaru achieved a 28% reduction in friction losses by using roller rockers, lighter components, and a redesigned oil system that holds about a liter more than earlier designs. Maintaining this balance of performance and reliability requires factory-spec parts that uphold Subaru's engineering standards.

Quality differentiates genuine parts from hit-or-miss aftermarket options. Different car makers create very different engine conditions. That's why Genuine Subaru Oil is the only oil made specifically for SUBARU BOXER engines. This attention to detail spans from gaskets to computer modules.

Warranty Protection: Why It Matters More Than You Think

Subaru backs its cars with strong warranty coverage: standard for three years/36,000 miles, and powertrain for five years/60,000 miles. Using factory parts helps keep this protection intact, while aftermarket parts can cause issues with other systems. Modifying your car with nonfactory parts may void your warranty. Performance upgrades often lead to denied claims. This makes a huge difference for Indianapolis drivers who count on their Subarus through brutal winter weather.

The Magnuson-Moss Warranty Act does offer some legal protection. It requires warranty companies to prove that your nondealer repair or modification directly caused a problem before they can legally deny your claim. While installing aftermarket parts doesn't automatically void your warranty, if they cause damage, you might be liable for the bill. Factory parts help you avoid this situation through guaranteed fit and quality standards. Many of our long-time customers think that saving a few dollars by buying nongenuine parts isn't worth the risk.

Critical Components That Demand OEM Quality

Some parts in your Subaru absolutely need the precision that only genuine parts deliver. Safety equipment such as brakes, airbags, and steering components must match exact specifications to keep Subaru's safety standards intact. The EyeSight driver-assist technology uses two cameras and includes adaptive cruise control, lane departure warning, and precollision braking, which all need perfectly calibrated parts to work correctly. Tiny differences in sensor position or electronic performance can compromise these systems that might one day save your life.

Head gaskets show why quality makes a huge difference. Six-star head gaskets use multilayer stainless steel with Viton rubber coating that can handle extremely high temperatures. This is critical for Subaru's all-aluminum engines, which expand and contract differently than old-style iron blocks. Getting the sealing and heat management just right means factory gaskets are must-haves to avoid expensive engine damage. Many DIYers learn this lesson the hard way after trying to save money on gaskets, only to pay much more for repairs later.

When Aftermarket Parts Might Make Sense

Aftermarket parts do have their place in some situations. If you want to enhance your Subaru with cosmetic modifications and accessories that don't affect the main systems, such as certain Subaru aftermarket body parts, these usually won't impact safety or warranty. If you've got a modified vehicle where warranty isn't a concern, aftermarket parts offer many options for customization and performance gains.

For an older Subaru with high mileage, budget-friendly aftermarket parts might work for nonessentials where saving money is important. The trick is knowing which parts affect your car's safety, performance, or warranty versus those designed mainly for looks or convenience.

The Hidden Costs of Choosing Aftermarket

Those initial savings from aftermarket parts often vanish when other costs surface. The National Highway Traffic Safety Administration found that Chinese aftermarket parts fail 3.2 times more often than original parts. More failures mean extra repairs, labor costs, and potential damage to connected parts. While Chinese aftermarket parts cost 30% to 60% less than American options, their quality varies wildly. A 2017 study by Idemitsu Lubricants America showed Genuine Subaru Oil protects engines better than leading aftermarket 0W-20 synthetic brands.

A lower resale value is another hidden cost — something many Subaru owners overlook. Maintaining your Subaru with genuine parts boosts resale value because buyers know what they're getting. Cars with dealership service records using factory parts may sell for more. Fitment problems with aftermarket parts create extra labor and diagnostic issues when they don't mesh with your car's systems.

Speedway Subaru's Professional Perspective

Our mechanics receive specialized Subaru training and have access to technical updates and service information independent shops can't get. Subaru ranked #1 for customer service among mass-market brands in the 2025 J.D. Power Customer Service Index Survey. This survey evaluates service quality, facility condition, efficiency, advisor professionalism, and vehicle pick-up process. This recognition shows the advantage of working with authorized dealers who maintain the highest quality standards.

Trust the Experts at Speedway Subaru for Your Parts and Service Needs

Your Subaru deserves the same quality parts and expertise that built its reputation for reliability and safety. Factory Subaru parts provide exact engineering, warranty protection, and lasting value that nongenuine parts can't match.

At Speedway Subaru in Indianapolis, our technicians understand your car's needs better than anyone. We stock genuine Subaru parts and provide specialized service that maintains your vehicle's safety, performance, and value. Whether you need maintenance, repairs, or want to check out our parts department, our team has you covered. Call Speedway Subaru to book your service appointment and experience what genuine parts can do for your Subaru.