MCS-977967 - Reproduction part. Used between the lower pushrod cover oil seal and the tappet block of H-D models equipped with multiple-parts pushrod covers. Repl. 6737. Note: Fits 91-21 XL models when custom equipped with multiple-parts pushrod covers.

Fitment:
36-21 B.T.; 57-90 XL (91-21 XL when custom equipped with multiple parts pushrod covers)