This product includes 2 oil sealing rings designed to replace part numbers 833996 and 18-2044.Constructed from rubber, these rings are engineered to provide a seal for Penta AQ MD 115, 130, 165, and 170 D21 Series outboard engines produced from 2001 to 2003.Compatible models include 2001, 2001B, 2001AG, 2001BG, 2002, 2002B, 2002D, 2002AG, 2002BG, 2003, 2003B, 2003D, 2003AG, 2003BG, 2003T, 2003TB, 2003 SOLAS, 2003B SOLAS, CA, AQ115B, AQ130, AQ130A, AQ130B, AQ130C, AQ130D, AQ165A, AQ170A, AQ170B, AQ170C, AQD21A, BB115A, BB115B, BB115C, BB165A, BB170A, BB170B, BB1D1-13, D1-13B, D1-20, D1-20B, D1-30, D1-30B, D2-40, D2-40B, D1-13F, D1-20F, D1-30F, D2-40F, MB10A, MD11, MD11C, MD11D, MD17, MD17C, MD17D, MD1B, MD2B, AQD2B, MD3B, MD2010-C, MD2010-D, MD2020-C, MD2020-D, MD2030-C, MD2030-D, MD2040-C, MD2040-D, 120S-D, 120S-E, MD2010A, MD2020A, MD2030A, MD2040A, MS2B-R, MS2A-D, MS2A-E, MS2L-D, MS2L-E, MD2010, MD2030, MD2040, MD2020, MD2010B, MD2020B, MD2030B, MD2040B, MD5A, MD5B, MD5C, MD6, MD6A, MD6B, MD7, MD7A, MD7B.The rings are designed for direct replacement with standard dimensions to proper fit.Installation can be completed without specialized tools.Suitable for use in marine environments across various vessel types.