SIERRA 73.03 mm Standard-Bore Mercury/Mariner 3-Ring Piston Ring Set – 18-3902

Description

SIERRA 73.03 mm Standard-Bore Mercury/Mariner 3-Ring Piston Ring Set – 18-3902

The SIERRA 73.03 mm Standard-Bore Mercury/Mariner 3-Ring Piston Ring Set – 18-3902 is a fit-specific marine service component for Selected Mercury/Mariner engines using three-ring pistons. It is intended to replace the corresponding OEM service part where the listed interchange and engine application match. Confirm the engine model, serial/year range and OEM number before installation.

• Standard-bore piston ring service set for selected Mercury/Mariner engines
• Designed for three-ring piston configurations
• Bore diameter: 73.03 mm
• Cross-references Mercury 39-78816A12 and 39-45155A12
• Confirm piston design, bore condition and OEM number before installation

Specifications

• Manufacturer: Sierra
• Part Number: 18-3902
• Product Type: Piston Ring Set
• Application: Selected Mercury/Mariner engines using three-ring pistons
• Bore Diameter: 73.03 mm
• Piston Type: Three-ring piston
• OEM / Aftermarket Interchange: Mercury 39-78816A12, 39-45155A12; Mallory 9-54217
• UPC: 030999316967