Bench Testing BMW E46 (SAP) Secondary Air Injection Control Valve
2002 BMW 330CI E46 has a Secondary Air Pump (SAP) valve that is frozen shut. I bought one off eBay and it didn't go so good. Bought another one off Amazon, and that one "might" work. But here is how you can bench test this SAP check valve BMW Part Number - Pierburg 11727553063 Other part numbers: 11727540469, 11721435420 Should be the same for any E46, 323i, 325i, 328i, and Xi models.
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