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S&S Super E/B Manifold, FX/FL Shovelhead ("O" Ring Heads, 1966-E78)
Genuine S&S casting. "O" ring steps and flange bolt holes remain well-machined.
Super E and Super B applications, only. For the Super G, an larger bore and flange hole spacing was used. This one is indexed "0" (zero) for stock FX and FL motors.
FITMENT NOTE--this manifold is for early "O" ring heads, only. For '78 and later, the band style manifold and seals must be used.
021521 CR-4 (21 01 31, 13-1)