L130OB Aftermarket Mercury 75/90HP Cylinder Sleeve Liner | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury 75/90HP Cylinder Sleeve Liner - Part Number: L130OB

A ported replacement cylinder sleeve for Mercury and Mariner 75HP and 90HP three-cylinder two-stroke outboards using the 89mm-bore block. The sleeve is supplied oversize externally for machine-shop installation and must be bored, finish-honed and decked to the engine manufacturer's specification after pressing into the block.

⚙️ Key Features

• 89mm / 3.500-inch nominal finished bore

• Transfer and exhaust ports machined into the sleeve

• Short exhaust-notch configuration

• Suitable for repair of scored, seized or worn cylinder bores

• Requires professional removal, installation, boring and honing

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• L130OB (aftermarket sleeve reference)

• Advanced Sleeve 1101SA and 1101SB are documented cross-reference sleeves

OEM / Related Numbers:

• L130OB

• Advanced Sleeve 1101SA

• Advanced Sleeve 1101SB

Aftermarket / Verified Equivalents:

• LA Sleeve: L130OB

• Asaki: L130OB

• Advanced Sleeve: 1101SA

• Advanced Sleeve: 1101SB

🚤 Compatibility

Commonly used on:

• Mercury and Mariner three-cylinder two-stroke powerheads

Typically suits:

• Engine models:

• Mercury 75HP three-cylinder, approximately 1994-2004

• Mercury 90HP three-cylinder, approximately 1994-2004

• Mariner 75HP and 90HP equivalents using the same 89mm-bore block

• Bore: 3.500 in / 89mm

• Outside Diameter: approximately 3.766 in

• Length: approximately 5.770 in

• Wall Thickness: approximately 1/8 in

• Engine Type: three-cylinder two-stroke outboard

🔌 Function

The cylinder sleeve provides the precision running surface for the piston and rings while preserving the two-stroke transfer-port and exhaust-port timing in the cylinder block.

Common signs of failure:

• Low compression or excessive crankcase blow-by

• Scored, seized or deeply worn cylinder bore

• Out-of-round or tapered bore beyond service limit

• Damaged port edges that catch or break piston rings

• Piston, ring or lubrication failure requiring block repair

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging