H pipe part number for 1971 was 346646 and 3466994-5

While it does say 426, it was also installed on 440 some motors.
Here is a picture of the parts book sheet



6005987-HPipenumber.jpg (129 downloads)
Last edited by AZ-Nick; 05/27/10 06:40 PM.

71 GTX 4sp Dana GY9 HD Road King