Specifications

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INTAKE
SYSTEMS
SEA-DOO
4 STROKE
ENGINE/
GASKETS
EXHAUSTDRIVE LINE
HANDLING
ELECTRICALWATERLINE
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& CONTROLS
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ACC
E
SSO
RIE
S
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SERVICE TOOLS
/HARDWARE
CHEMICAL
SEA-DOO 4-STROKE • ENGINE
GASKET TECHNOLOGY
SEA-DOO 4-TEC
GASKETS & GASKET KITS
Description OEM No Part No.
Aluminum Washer Kit ---- 6943K
4-Tec Top End Gasket Kit ---- 6980K
4-Tec Complete Gasket Kit With Seals ---- 6990K
Head (Standard Bore) 420950770 6900*
Valve Cover 420950820 6905*
Oil Pump Housing 420950970 6910*
Oil Separator Cover 420630540 6915*
Timing Drive Cover 420931130 6920*
Oil Seal 420650310 6956
Output Sleeve Seal 420630550 6958
Oil Pump O-Ring 420631480 6959
Intake O-Ring - 3 Required 420950740 6960
Intake O-Ring Kit ---- 6961K
Seal Kit ---- 6962K
*
Denotes when the gasket is included
in the Top End Gasket set.
RIVA PRO-SERIES
4-STROKE CYLINDER
HEAD STUD KITS
RIVA’s ultra high strength cylinder head stud
kit is essential equipment when upgrading
internal components on your high boost Yamaha engine. Precision machined from
premium grade 8740 alloy and heat treated to exacting tolerances, these studs
dramatically increase reliability & ease of maintenance. Key Benefits Include:
• Superior material & heat treat process provides 10X better strength than OEM
• Studs provide improved alignment of cylinder head and gasket
• More accurate & consistent torque loading provides a more uniform clamping
force on head gasket.
• Helps prevent blown head gaskets and assures optimum engine sealing.
Description Part No.
RIVA Pro-Series Cylinder Head Stud Kits RS10050-HSK
Sea-Doo 260/255/215
R&D HIGH PERFORMANCE HEAD GASKETS
R&D High Performance Racing Head Gaskets were developed to replace the
OEM head gasket with a higher performing Multi Layer Steel Stack Design (MLS),
utilizing state of the art materials proven to withstand extreme heat generated from
high cylinder pressures in high boost performance packages. Each gasket is deep
dual embossed (both sides) and Viton Coated to promote a positive seal. Use the
R&D Head Gasket with confidence in standard replacement situations or Pro Race
Engines. R&D’s race proven design maintains a positive seal with up to 24 pounds
of boost. Available in standard and over bore sizes.
NOTE: All R&D head gaskets are standard bore. If a larger size is needed, please
specify when ordering.
Description Part No.
R&D Sea-Doo 4-Tec HP Head Gasket 080-01500
.040”/OEM Stock Thickness (Standard Bore)
R&D Sea-Doo 4-Tec HP Head Gasket 080-01501
.036” (-.006) Thickness / Raise Compression (Standard Bore)
R&D Sea-Doo 4-Tec HP Head Gasket 080-01502
.046” (+.006) Thickness / Lower Compression (Standard Bore)
RIVA PRO-SERIES
4-STROKE CYLINDER
HEAD GASKETS
GASKETS
RIVA’s Pro-Series Cylinder Head Gaskets were developed to withstand
severe heat & pressure generated by high-boost and high horsepower
applications delivering maximum reliability to your racing engine.
Key Benefits Include:
• Three layer stainless construction for durability & corrosion resistance.
• Viton coated & embossed surfaces for maximum sealing.
• Unique design promotes even torque & requires no re-torque.
Description Part No.
RIVA Sea-Doo 260/255/215 Pro-Series RS10050CHG1503
Head Gasket (Standard Bore)
WSM SEA-DOO 4-TEC
COMPLETE GASKET KIT
WSM Sea-Doo 4-Tec Gasket Kit includes outer oil seals and are an
economical solution to OEM gasket kits.
Description Part No.
WSM Sea-Doo Complete Gasket Kit 007-626
WSM Sea-Doo 4-Tec Head Gasket (Standard Bore) 007-399-05
007-626
007-399-05