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OEM Volvo \/ Mack:\u003cspan\u003e \u003cb\u003e21407621 and 22009269\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBosch: \u003cstrong\u003e0 434 250 005\u003c\/strong\u003e Dorman: \u003cstrong\u003e904-7915\u003c\/strong\u003e Automann: \u003cstrong\u003e820.HJ96621\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe gasket and mounting screws are included with this part.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003eThis aftermarket hydrocarbon (7th) injector replaces several \u003cstrong\u003eVolvo\u003c\/strong\u003e and\u003cstrong\u003e Mack\u003c\/strong\u003e part numbers as listed above. This injector is a replacement for part of the \u003cstrong\u003eBosch Denoxtronic\u003c\/strong\u003e system found on many trucks.\u003c\/p\u003e\n\u003cp\u003eThe hydrocarbon doser is an important part of your emissions system; it works by injecting fuel into your exhaust stream to make sure the emissions system works properly.\u003c\/p\u003e"}