8947T55 Mercury Cylinder Block - Needs Repair. Sold As Pair | Genuine Used Part

🔧 Product Description

Genuine Mercury Three-Cylinder Oil-Injection Cylinder Blocks - Part Number: 8947T55

A pair of genuine used Mercury cylinder blocks for selected 65 Jet, 75HP and 90HP three-cylinder two-stroke outboards.

Both blocks require inspection and repair before reuse. They are supplied together as one pair and are suitable for professional reconditioning, machining, parts recovery or rebuilding projects.

⚙️ Key Features

• Pair of genuine Mercury three-cylinder blocks
• Correct oil-injection block reference 8947T55
• Fits selected 65 Jet, 75HP and 90HP engines
• Sold together as one pair
• Both blocks require repair before installation

🚤 Compatibility

Commonly used on

• Mercury and Mariner oil-injected three-cylinder two-stroke powerheads
• 65 Jet engines using the 90HP three-cylinder powerhead

Typically suits

• Engine models:
• Mercury 65 Jet
• Mercury / Mariner 75HP three-cylinder
• Mercury / Mariner 90HP three-cylinder
• USA serial range 0D283222 through 0G760299
• Later oil-injected applications where block 8947T55 or a listed cross-reference is specified
• HP Range: 65 Jet / 75HP / 90HP
• Engine Type: Mercury / Mariner inline three-cylinder oil-injected two-stroke outboard
• Year Range: Approximately early-to-mid 1990s, dependent on serial number

🔌 Function

The cylinder block houses the three cylinder bores, crankshaft, pistons, connecting rods and crankcase induction passages.

Potential repair requirements may include

• Cylinder boring or honing
• Installation of oversized pistons
• Repair of scored cylinder walls
• Crankcase or sealing-surface machining
• Thread repair
• Welding of damaged castings where professionally assessed
• Replacement of bearings, seals and internal components
• Pressure and dimensional testing before rebuilding

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 898208A01 related later cylinder-block assembly
• 8947T57 related later cylinder-block reference
• 8947T55 oil-injection cylinder-block reference
• 8947A55, 8947A48 and 8947A43 related earlier block assemblies

OEM / Related Numbers

• 876-8947T55
• 8947T55
• 8947T57
• 898208A01
• 876-898208A01
• 8947A55
• 8947A48
• 8947A43
• Three-cylinder 65 Jet / 75HP / 90HP powerhead block

Aftermarket / Verified Equivalents

• No aftermarket equivalent for the complete cylinder block
• Aftermarket pistons, rings, bearings, seals and overhaul gaskets are available separately

📦 Condition

• Genuine used parts
• Supplied as a pair
• Both cylinder blocks need repair
• Sold for rebuilding, machining, parts recovery or professional reconditioning
• Not ready for direct installation