Sierra 18-0558 Marine Oil Seal for Volvo Penta Duo Prop Sterndrive

The Sierra 18-0558 is a precision-engineered double lip oil seal designed as a direct replacement for Volvo Penta Duo Prop and sterndrive lower units. Built to meet or exceed OEM specifications, this seal delivers reliable performance in demanding marine environments, preventing oil and grease leakage while protecting shafts and bearings from contamination.

Key Features:

• Double lip design provides superior sealing for dynamic shaft applications in marine lower units
• Inside Diameter (I.D.): 44 mm (1.732 in)
• Outside Diameter (O.D.): 58.33 mm (2.296 in)
• Width: 7 mm (0.276 in)
• Directly replaces Volvo Penta OEM part 851407 (also referenced as 0851407)
• Also cross-references Evinrude / Johnson / OMC / BRP part 851407
• Engineered to withstand the rigors of the marine environment

Compatible Drive Series:

• Volvo Penta 280B, 290A, SP-A, SP-A1, SP-E
• 290DP, DP-A, DP-A1, DP-A2, DP-B, DP-B1, DP-C1, DP-D, DP-D1, DP-E, DP-G
• DP-S, DPS-B, DPS-B1
• DPX-A, DPX-R, DPX-S
• FWD-B1, FWD-B2
• XDP-B

Sierra International is a trusted leader in aftermarket marine parts, offering a comprehensive product line backed by an industry-leading customer satisfaction warranty. The Sierra 18-0558 seal is sold individually (each).