99746A17 Mercury MerCruiser Manifold Kit Exhaust | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver 4.3L V6 Wet Joint Exhaust Manifold Kit - Part Number: 99746A17

Genuine Quicksilver exhaust manifold kit for MerCruiser GM 4.3L V6 wet-joint engines. This kit replaces earlier 99746A3 and 99746A8 manifold references and includes the manifold service components required for supported centre-rise wet-joint V6 exhaust installations.

⚙️ Key Features

• Genuine Quicksilver OEM exhaust manifold kit
• Correct Mercury part number 99746A17
• Wet-joint centre-rise manifold for MerCruiser GM 4.3L V6
• Supersedes 99746A3 and 99746A8
• Kit commonly includes manifold gasket, restricted riser gasket and mounting hardware
• Used on pre-dry-joint 4.3L V6 exhaust systems

🚤 Compatibility

Commonly used on

• MerCruiser GM 4.3L V6 wet-joint exhaust systems
• Centre-rise exhaust manifold replacements
• Pre-dry-joint MerCruiser V6 engines
• Exhaust repairs due to corrosion, water leakage or restricted cooling passages

Typically suits

• Engine models:
• MerCruiser 4.3L GM V6 carburetted wet-joint exhaust applications
• MerCruiser 4.3LX GM V6 wet-joint exhaust applications
• MerCruiser 4.3L EFI wet-joint exhaust applications where 99746A17 is specified
• MerCruiser 4.3L MPI Alpha / Bravo wet-joint applications before dry-joint changeover
• MerCruiser GM 262 CID V6 centre-rise manifold applications using 99746A17 / 99746A8 / 99746A3 manifold family
• Common Serial Families:
• MerCruiser 4.3L / 4.3LX V6 Alpha / Bravo service families through late wet-joint production where 99746A17 is specified
• Pre-2002 wet-joint 4.3L V6 exhaust systems using centre-rise manifolds
• Not for 2002-newer dry-joint exhaust systems unless the diagram specifically lists this wet-joint manifold
• Engine Type: MerCruiser GM 4.3L / 262 CID V6 petrol
• System Type: Wet-joint exhaust manifold kit

🔌 Function

The manifold collects exhaust gases from the cylinder head and routes them through a water-jacketed marine exhaust path to the riser or elbow.

⚠️ Common Signs of Failure

• Rust staining or water leakage around manifold
• Internal corrosion or blocked cooling passages
• Water intrusion into exhaust ports
• Exhaust leak at manifold flange
• Engine overheating due to manifold restriction
• Replacement required during exhaust system overhaul

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 99746A17 current OEM exhaust manifold kit reference
• 99746A8 earlier OEM manifold kit reference
• 99746A3 earlier OEM manifold kit reference

OEM / Related Numbers

• 99746A17
• 99746A8
• 99746A3
• MerCruiser 4.3L V6 wet joint manifold
• V6 centre-rise exhaust manifold
• 27-99757 related manifold-to-cylinder-head gasket
• 8M0215011 current replacement for 27-99757 gasket family
• 27-863724 related restricted riser gasket
• 27-863726 related full-flow riser gasket where required by cooling layout
• 10-43749 related mounting screw reference
• 22-41622 / 416223 related pipe plug family reference

Aftermarket / Verified Equivalents

• Sierra: 18-1951-1 / 18-1952-1 application family where matched
• GLM: 51220
• Barr Marine V6 wet-joint manifold equivalents for 99746A17 applications
• Recmar / MAR746 wet-joint V6 exhaust manifold replacement
• H2O / aftermarket MerCruiser 4.3L V6 wet-joint exhaust manifold equivalents
• Match port / starboard layout, riser style and wet-joint configuration before substituting

📦 Condition

• Genuine Quicksilver part
• Brand new
• Supplied in original or equivalent packaging