1.4L 16v - A14NEL This page covers the A14NEL 1.4 turbo, the Small Gasoline Engine block fitted to Vauxhall/Opel. The listing is deliberately narrow: a single reference, JE Pistons forged pistons cut for the 16-valve turbo. On this engine the cast original piston is the first limit once boost pressure climbs; a forged piston carries the thermal and mechanical load without collapsing the ring lands or picking up on the gudgeon pin bore. Fitting one calls for a bore check and a piston clearance set for forged material. No other part family is listed here: the A14NEL selection stops at the piston.