Sensor Map - Mercruiser / OMC 8.1 Liter V8 OEM# 3861321 | WSM 778-157

Sensor Map Mercruiser / OMC 8.1 Liter V8 OEM# 3861321

This WSM sensor map is a quality aftermarket replacement part designed for Mercruiser OMC 8.1 Liter V8.

It replaces selected OEM reference numbers including 3861321, 556102, 861249, 861249A1, 881731, 8M0054726, 8M0186195, S18-7660 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 1 listed fitment
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 778-157
• Product: Sensor Map
• OEM Reference: 3861321, 556102, 861249, 861249A1, 881731, 8M0054726, 8M0186195, S18-7660
• Application: Mercruiser OMC 8.1 Liter V8

Product Fitment

This part is suitable for the following models:

• Mercruiser OMC 8.1 Liter V8

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.

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• Sensor Camshaft Position Mercruiser / Volvo V6 - V8 OEM# 3863130 OEM# 3863130 898141 – 363-8141
• Wires Ignition Set Mercruiser 2.5 - 3.L 4 Cyl - Conventional Ignition OEM# 43376A5 – 369-500

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