Extend your LSU4.9 O2 sensor wiring with a 12-inch extension harness built for Bosch, AEM, and NTK air/fuel sensors. The 1-foot lead minimizes routing stress and keeps the connection secure in tight engine bays. Designed to connect LSU4.9 sensors across Bosch, AEM, and NTK sensing systems, it supports upgrades, replacements, or diagnostic wiring runs. Before installation, verify that your sensor model matches LSU4.9 to ensure full compatibility.
