Order Subaru Forester O2 sensors. Find Subaru Forester O2 sensor socket & spacer. Explore replacement cost. Locate oxygen sensor location. Use sensor cleaner for upkeep. Maintaining optimal performance in your Subaru Forester hinges on the health of your O2 sensors, key in managing fuel efficiency and emissions. Regularly checking for signs of deterioration, such as rough idling or a check engine light, can preempt the need for urgent replacements. Enhance sensor longevity by using fuels without additives and ensuring your engine is running efficiently. When selecting a new O2 sensor, opt for direct-fit options with high-grade zirconia or titanium for superior durability. Installation is straightforward with the right tools—just be sure to follow your Forester's specific guidelines to ensure accuracy and performance. With these tips, keep your Subaru running smoothly while leveraging the convenience of online shopping to find the perfect fit for your vehicle's needs.