Billet H22 Timing Belt Tensioner With Walk Blocker H Series Prelude H2B H SwapBillet H22 Timing Belt Tensioner With Walk Blocker H Series Prelude H2B Civic Si Applications: For H22 h23 Vtec (blue top) or similar Honda engines. Please note that power steering must be deleted and the timing belt cover must be removed. Honda H series especially ones with high duration camshaft or milled heads are known to belt slap excessively along the long front side of the timing cover. This excess slack in the timing belt can cause the belt to