Thundermax Replacement Oxygen Sensor 309-355 for Harley-Davidson Motorcycles

Upgrade your Harley-Davidson with the Thundermax Replacement Oxygen Sensor (Part Number: 309-355). Crafted in the USA, this sensor is designed to seamlessly replace your factory oxygen sensor, ensuring optimal performance of your Thundermax ECM auto-tune system. Its easy installation process involves swapping out the existing sensor, installing the new harness, and loading the appropriate map for your bike, allowing you to get back on the road quickly and efficiently. The sensor's precise design helps maintain accurate air-fuel mixture readings, which are essential for efficient engine operation and emissions control. Due to potential clearance issues, some aftermarket exhaust systems may require modifications or relocation of their oxygen sensor port bungs for optimal fit and function. Features: Easy installation: Replace factory ECM, install new O2 sensors and harness, load correct map for your bikeDesigned specifically for Thundermax ECM auto-tune systems to optimize engine performanceMade in the USA with high-quality materials for durability and reliabilityCompatible with a variety of Harley-Davidson models, ensuring a proper fit and functionNote: Some aftermarket exhaust systems may require modifications or relocation of oxygen sensor bungs due to clearance considerations