1Applicable Model: Ignition control module is replacement for Chevy Astro Van C K 1500 2500 3500 Pickup; Fit for Roadmaster V8 5.0L 5.7L. Fit for Brougham V8. 2OE Number: The part numbers for reference are LX340, D1943A, D1978, D1979, D1990, D1993, 10457765, 10469931, 10482827, 10482834. 3Strong Structure: Made of high hardness metal and plastic materials, the ignition module is wear resistant, impact resistant and not easy to break. 4Original Standard Production: Ignition module unit is engineered to meet or exceed Oem specifications, ensure long term use and high performance. 5Direct Replace: Designed and manufactured according to the original sizes, can be used to refurbish and replace the old and broken ignition unit.