The DS-224-4441 cylinder head inner valve spring measures 2.524 inches in free length and has an outer diameter of 0.915 inches. It can be used for intake and exhaust in the following Caterpillar engine models:
- 3176
- Industrial with an engine serial number of 3NL
- Machine with an engine serial number of 43Z
- Truck with an engine serial number of 2YG
- 3176B
- Industrial with an engine serial number of 3NL
- Truck with an engine serial number of 9CK
- 3176C
- Industrial with an engine serial number of 2AW
- Machine with an engine serial number of 3PD or 7ZR
- 3196 machine with an engine serial number of 5ED or 6AR
- C10 with an engine serial number of:
- 2PN1 through 2PN7341
- 3CS1 and above
- 8YS1 and above
- BCX and above
- C11
- C12 with an engine serial number of:
- 1YN and above
- 2SK1 and above
- 9NS1 and above
- 9SM and above
- BDL1 and above
- MBL1 and above
