The DS-6I-0283 cylinder head outer valve spring can be used for intake and exhaust in the following Caterpillar engine models:
- 3054 and 3054B naturally aspirated with an engine serial number prefix of:
- 3054 turbocharged with an engine serial number of 6FK1 and above
- 3054 turbocharged (Piston Grade K or Piston Grade L) with an engine serial number of 7BJ1 and above
- 3056 and 3056B naturally aspirated with an engine serial number prefix of:
- 3056 naturally aspirated or turbocharged with an engine serial number prefix of 1ML
