Non-insulated female terminals used in: 4-pin oxygen sensor connectors (equivalent to OEM 0005407417), Part No. 37433. Overall length: 20.83 x 3.40mm wide. To be used with yellow weatherproof seals, Part No. 37484. For the perfect seal on the terminals & seals please use Laser ratchet crimping tool, Part No. 7642, which has specially designed jaws for a professional crimp. Included in assorted box of male & female terminals to suit Mercedes-Benz & BMW electrical sensors, Part No. 37685.