mgb fuse box | eBay Find great deals on eBay for mgb fuse box. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword 1 product rating - MG MGB MG Midget Triumph TR6 Fuse Box Lucas# 37552 1968-1979. $5. Buy It Now +$3 shipping. Watch. 1974 MG MGB Used Parts For Sale | FREE Shipping by Used 1974 MG MGB Parts For Sale. Access online used parts and accessories for 1974 MG MGB vehicles. Our 1974 MG MGB inventory changes by the hour and includes front/rear bumpers, doors, hoods, headlights, taillights, mirrors, wheels, engines and more.