About Replacement Engines UK is one of the UK’s most reliable auto engine replacement companies and we offer the best engine replacement services in the UK and worldwide. Our services include delivery and fitting of used, reconditioned and new engines, cylinder heads, manual and automatic transmissions and the turbochargers. We offer UK and international delivery, fittings are available with massive discounts and special offers. We offer second to none technical and after sale support services. Our qualified and dedicated technical experts are available any time to give you the advice on issues and problems with your vehicle. All the engines we supply are covered by warranty.