420931706 Head Gasket for Sea-Doo Sportster LE DI 951 2004-2006

Head Gasket for Sea-Doo Sportster LE DI 951

This head gasket for Sea-Doo Sportster LE DI 951 boats seals the cylinder head to the engine block, maintaining compression and sealing coolant passages on the 951 DI engine; it cross-references OEM part 420931706.

Overview

This head gasket is a direct-fit sealing component built for the 951 DI engine found in the Sea-Doo Sportster LE DI. It replaces a failed gasket that causes compression loss, coolant intrusion, or overheating, and is intended for owners rebuilding the top end of their boat. The head gasket matches the OEM 420931706 reference for a precise fit.

Built For Performance

• Cross-references OEM part 420931706 for a confident match
• Engineered to handle the compression and heat of the 951 DI engine
• Seals coolant and combustion passages at the cylinder head
• Sized for the raised-deck 951 DI cylinder configuration
• Restores proper compression after a top-end service

Fits These Machines

• for Sea-Doo Sportster LE DI 951, 2004
• for Sea-Doo Sportster LE DI 951, 2005
• for Sea-Doo Sportster LE DI 951, 2006

On-The-Job Use

• Top-end rebuilds on the 951 DI marine engine
• Repairing coolant leaks at the head gasket surface
• Compression loss troubleshooting and correction
• Cylinder head removal and reinstallation

Specs At A Glance

Good To Know

Q: Is it necessary to machine the head before installing this gasket? A: If the head or deck is warped or pitted, resurfacing is recommended; otherwise a clean, flat surface is enough for a proper seal.

Q: Can I install this gasket without removing the engine from the boat? A: Head gasket replacement on the Sportster LE DI can often be done with the engine in place, though access may require removing surrounding components.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.