Marren Oil Services Ltd tanker parts and spares suppliers is a family run business that was established in County Sligo in 2001 when John Marren, who was driving an oil lorry at the time, saw a gap in the market. Initially we supplied gauges for oil tanks however the business soon expanded into a full range of oil tanker parts and spares. Today we supply everything you require for your oil tanker or oil depot business including Adaptors & Couplers, ADR & Spill Control, Hoses & Nozzles, Pumps & Meters, Oil Tanker Spares and much more.