Fuel pump Type 4 Bay/T25Fuel pump Type 4 We used to deliver fuel pumps for Type 4 engines for years as second hand parts from stock. Meanwhile the previous years it became more difficult to find good used fuel pumps for revision and that? s why we? ve been looking for a good alternative to replace damaged or completely used fuel pumps. Our purchasing team has laid hands on a good reproduction of Type 4 engine pumps. These pumps are delivered each seals inclusive.