97432A2 Mercruiser Coupling | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 3.7L Engine Coupling - Part Number: 97432A2

A genuine MerCruiser engine coupling for later 3.7-litre / 224 CID four-cylinder sterndrive engines.

The coupling mounts to the flywheel and transfers engine torque into the sterndrive input shaft through its splined centre and flexible rubber element. This version is used on later 3.7L engines from serial number 6170297 and above and incorporates the serviceable spline-lubrication arrangement.

⚙️ Key Features

• Genuine MerCruiser OEM engine coupling
• Correct part number 97432A2
• Fits later 3.7L / 224 CID four-cylinder engines
• Used from engine serial number 6170297 and above
• Sierra and Recmar replacement couplings available

🚤 Compatibility

Commonly used on

• MerCruiser 3.7L / 224 CID four-cylinder sterndrive engines
• Later coupling arrangements from serial number 6170297 and above

Typically suits

• Engine models:
• MerCruiser 165 3.7L
• MerCruiser 170 3.7L
• MerCruiser 180 3.7L
• MerCruiser 190 3.7L
• MerCruiser 470 late-production engines
• MerCruiser 488
• MerCruiser 3.7L
• MerCruiser 3.7LX
• MerCruiser 530D-TA and 636D-TA applications where 97432A2 is specified
• Engines from serial number 6170297 and above
• Engine Type: MerCruiser 3.7-litre / 224 CID inline four-cylinder petrol sterndrive
• Year Range: Approximately 1983 - 1989

🔌 Function

The coupling transfers crankshaft rotation into the sterndrive while absorbing torsional vibration and protecting the drivetrain from shock loading.

⚠️ Common Signs of Failure

• Engine revs without turning the sterndrive
• Burnt-rubber odour in the engine compartment
• Input-shaft splines stripped
• Rubber element cracked or separated
• Coupling damaged by incorrect engine alignment

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 97432A2 current MerCruiser coupling reference for the later 3.7L engine family

OEM / Related Numbers

• 97432A2
• 97432-A2
• 745061222472
• Related flywheel, input-shaft and coupling hardware

Aftermarket / Verified Equivalents

• Sierra: 18-2414
• Recmar: REC97432A2
• NAPA / Sierra Marine: SME182414

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated