420950772 Head Gasket for Sea-Doo Fish Pro Sport 170 1630 2022-2026

Head Gasket for Sea-Doo Fish Pro Sport 170 1630

This head gasket, part number 420950772, seals the cylinder head to the engine block on the Rotax 1630 ACE engine found in the Sea-Doo Fish Pro Sport 170, containing combustion pressure and keeping coolant and oil in their proper channels.

Overview

The head gasket for Sea-Doo Fish Pro Sport 170 1630 fits the 2022 through 2026 model years. It maintains compression at the head-to-block joint and separates fluid passages so the engine runs reliably. This head gasket is made for riders handling a top-end service or replacing a failed seal on their Fish Pro Sport 170.

Built For Performance

• Precision-cut to match the 1630 ACE cylinder head bolt pattern and port layout
• Composite construction engineered to withstand high combustion temperatures
• Seals coolant, oil, and compression passages simultaneously
• Maintains proper compression ratio across all three cylinders
• Direct replacement for OEM part number 420950772

Fits These Machines

• for Sea-Doo Fish Pro Sport 170 1630, 2022
• for Sea-Doo Fish Pro Sport 170 1630, 2023
• for Sea-Doo Fish Pro Sport 170 1630, 2024
• for Sea-Doo Fish Pro Sport 170 1630, 2025
• for Sea-Doo Fish Pro Sport 170 1630, 2026

On-The-Job Use

• Top-end rebuilds after overheating or coolant loss
• Head removal for valve or piston inspection
• Restoring compression on high-hour Rotax 1630 engines
• Routine service when the cylinder head is pulled

Specs At A Glance

Good To Know

Q: Do I need to replace head bolts when installing this gasket? A: Many torque-to-yield head bolts are single-use, so check your service manual and replace them if specified to ensure a proper seal.

Q: Is this gasket reusable if I remove the head again? A: No, a head gasket compresses to seal once and should always be replaced any time the cylinder head is removed.

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