Review on JDMSPEED Left Intake Manifold Adjusting Unit DISA Valve Replacement | BMW 135i 328i 530i 528i X5 Z4 by Mohamed Greene

Yes it's a lot cheaper than an OEM part or buying a rebuild kit BUT don't waste your money. Less than a month after installation, the plastic valve flange broke in half sending 2 pieces of plastic and a metal pin down the manifold. If I hadn't noticed this in time, it could have seriously damaged the engine. So instead of buying a more expensive, similarly constructed part from BMW, I paid about $95 for a metal flange rebuild kit and rebuilt my part. Well THAT was worth the dollars and time because I drive a lot. And now, when I smack it to go around someone, I don't feel that nagging fear that that piece might break again.