The DS-R66090 fuel line tube can be used on John Deere engine models:
- 3029D Powertech with an engine serial number of 252768 and above and pistons marked RE61467
- 3029D Powertech with an engine serial number up to 252767 and pistons marked RE45323
- Late 3029D Powertech models with pistons marked RE500210
- 3029T Powertech with an engine serial number of 258847 and above and pistons marked RE61270
- 3029T Powertech with an engine serial number up to 258846 and pistons marked RE40557
- 3029T Powertech with pistons marked RE500211
- 3-164D with O-rings in the block and an engine serial number of 179602 and above
- 3-179A, 3-179D and 3-179T
- 4-219D and 4-219T with O-rings in the block and an engine serial number of 275484 and up
- 4-239D and 4-239T
- 4-276D with the 1.37 inch diameter piston pin
- 4-276D with the 1.62 inch diameter piston pin
- 4-276T
- 6-329D and 6-329T with O-rings in the block and an engine serial number of 277549 and above
- 6-359A, 6-359D and 6-359T
- 6-414D and 6-414T
