Merlin is now the market leader in the supply of diesel fuel injection spare parts & test equipment. Merlin are Authorized Distributors for the following companies, Delphi, Bosch, Denso, Zexel, Stanadyne, Woodward, VDO (formerly Siemens), Yanmar and Monark. With more than 30,000 part numbers available ex-stock & more than 235,000 part numbers available within 24 hours we are the UK's largest supplier of Diesel fuel injection spare parts.