Upgrade your 1976-1979 Honda Civic L4 1.5L with the Bosch 30508 Voltage Regulator, designed for a precise fit to replace OEM part numbers 31400611024 and 31400634671. This robust regulator boasts easy installation thanks to its bolt-on mounting style, ensuring a secure and stable connection. Its durable construction, combined with a matte finish, offers reliable performance and resistance to water, essential for the longevity of your vehicle's electrical system. With the included California Prop 65 warning, be aware of the potential health hazards associated with this product. Despite the absence of a manufacturer warranty, the voltage regulator is a vintage part with interchange numbers 1V1138, VR748, and 27-1700, assuring its compatibility and function. Crafted in Japan, this non-universal fitment piece ensures your vehicle's electrical components operate at their best. Representative item is shown. New old stock with original packaging. Has 5 pin connector. Item weight 1 lb. Made in Japan. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties. Most items have 30-day returns along with free fast shipping in 1 business day (see details). Message us anytime. Buy from a trusted 16+ year seller!