Reference OE/OEM Number: 11662244541, 11667794767, 2244266, 2244541, 545707, 545714, 8510328, 90509170, 93185810, STC2219, WYX00003, 545707, 545714, 90509170, 93185810, 8510328, STC2219, WYX000030 The ELRING 833.916 gasket is manufactured in Germany using high-quality ACM (Polyacrylate Rubber), providing excellent resistance to engine oil, high temperatures and long-term ageing. Designed as a direct replacement for the original vacuum pump seal, it restores a leak-free connection between the vacuum pump and engine. The vacuum pump plays an essential role in supplying vacuum for the brake booster and other vacuum-operated engine systems. Over time, the original sealing ring becomes hard and brittle due to constant exposure to heat and engine oil, leading to oil leaks around the va.