O - Ring Case Half - Mercury / Mariner 75-125 HP 1.5L (2012, 2014-2015) OEM# 891956 | WSM 540-40

O-Ring Case Half Mercury / Mariner 75 - 125 Hp 1.5L 04-15 OEM# 891956

This WSM o-ring case half is a quality aftermarket replacement part designed for Mariner 3 Cyl 3.6255 Bore 1.5L Optimax 115 and 6 other compatible models.

It replaces selected OEM reference numbers including 891956 and is suitable for service, repair and rebuild work.

Key Features

• Quality aftermarket replacement part from WSM
• Engineered for dependable fit, function and service life
• Designed for marine and powersports repair and maintenance
• Compatible with 7 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 540-40
• Product: O-Ring Case Half
• OEM Reference: 891956
• Application: Mariner 3 Cyl 3.6255 Bore 1.5L Optimax 115 and 6 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 3 Cyl 3.6255 Bore 1.5L Optimax 115 – All Years
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 125 – 2004-2014
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 75 – 2006-2012
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 80 – 2004-2014
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 90 – 2006-2014
• Mercury 3 Cyl 3.6255 Bore Pro XS 115 – 2004-2014
• Mercury – 2010-2015

Why Buy WSM

WSM is a trusted manufacturer of aftermarket marine and powersports parts, known for dependable quality, strong fitment coverage and workshop-ready replacement components.

You May Also Need

Browse related parts for compatible models:

• Gasket Reed Mercury / Mariner 75 - 125 Hp 1.5L DFI OEM# 27-880122 – 516-52
• Piston Clips Mercury / Mariner 75 - 300 Hp 1.5L Optimax – 400-27
• Gasket Kit Powerhead Mercury / Mariner 75 - 125 Hp DFI 3 Cyl OEM# 27-879855A04 – 500-207
• Oil Seal Crankshaft Mercury / Mariner 75 - 125 Hp 1.5L Optimax 04-14 OEM# 26-879635 – 550-40T

Please use the fitment guide, OEM references and images to confirm this is the correct part before ordering.