1. Product Details Product Overview: This crankcase ventilation (PCV) hose, OE number 12261-21060 (also 1226121060), keeps your engine running at peak efficiency by channeling harmful blow-by gases from the crankcase back into the intake system. It is manufactured as a direct OE-equivalent replacement, matching the original part in dimensions, shape and connection layout for a plug-and-play fit. By maintaining correct crankcase ventilation, it prevents oil sludge build-up,