Intake Manifold Clamp, FX Shovelhead Late 1978-Early 1980 (OEM/NOS #27063-78)
This is the early, band style clamp. Factory references show use on all FX models from late 1978-early 1980. For the FL, a different part number was used, but we can't imagine there being any fundamental differences.
For model years 1981 and later, the Factory used a different part number of #27063-80. The later clamp had a slotted feature on the clamp band whereas the early clamp (this clamp) has a solid clamp band feature. Otherwise, the early and late clamps are identical and fully interchangeable.