Natural sand cast aluminum finish. Reproduction of the OEM front & rear rocker arm housings, perfect for restaurations. Replaces front OEM 90-36 (36-47 Knuckle). Replaces rear OEM 91-36 (36-40 Knuckle) and 91-41 (41-47 Knuckle) housings.
Fits: > 36-47 Knucklehead; S&S KN-series engines (NU)
