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Sea Doo Cylinder Head Components

2016 Sea Doo 300 HP Valve Cover and Coil upgrade kit for 2005 and older 4-Tec Engines

2016CK-2005OLD

Upgrade your 2005 and older 4-Tec motor to the new style bolt in ignition coils used on the 2016 Sea Doo 300 HP watercraft. This kit contains the following all original Sea Doo OEM components 3 x Ignition Coils with coil cap Seals 3 x Coil connectors with pins and connector seals. (used to rep...

  • $372.95
    300 Valve Cover.jpg

    2016 Sea Doo 300 HP Valve Cover and Coil upgrade kit for 2005 and older 4-Tec Engines

  • $372.95
  • 2016 Sea Doo 300 HP Valve Cover and Coil Upgrade Kit for 2006 and newer 4-Tec Engines

    2016CK-2006NEW

    Upgrade your 2006 and newer 4-Tec motor to the new style bolt in ignition coils used on the 2016 Sea Doo 300 HP watercraft. This kit contains the following all original Sea Doo OEM components 3 x Ignition Coils with coil cap Seals 3 x Coil connectors with pins and connector seals. (used to rep...

  • $426.95
    300 Valve Cover.jpg

    2016 Sea Doo 300 HP Valve Cover and Coil Upgrade Kit for 2006 and newer 4-Tec Engines

  • $426.95
  • RIVA Sea-Doo 1503/1630, Cylinder Head Stud Kit

    RS10050-HSK

    Our ultra high strength cylinder head stud kit is essential equipment when upgrading internal components on your high boost Sea-Doo engine. Precision machined from premium grade 8740 alloy and heat treated to exacting tolerances, these studs dramatically increase reliability & ease of maintenance. ...

  • $199.95
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    RIVA Sea-Doo 1503/1630, Cylinder Head Stud Kit

  • $199.95
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    OEM Sea Doo 4-Tec Head Bolts (set of 8) for 185/215/255/260/300 HP Engines

  • $79.76
  • OEM Sea-Doo 4-Tec Rocker Shaft Bolts (set of 6)

    6 x 420641080

    The rocker shaft bolts must be replaced on a Sea Doo 4-Tec Engine any time they are removed. These are the genuine OEM Sea Doo rocker shaft bolt replacements (set of 6)

  • $35.94
    SD 420641080.jpg

    OEM Sea-Doo 4-Tec Rocker Shaft Bolts (set of 6)

  • $35.94
  • OEM Sea Doo Head Gasket for 300 HP Skis

    420950772

    Genuine Sea Doo 4-Tec head gasket. The head gasket must be replaced any time the head is removed.

  • $104.99
    SD 420950770.jpg

    OEM Sea Doo Head Gasket for 300 HP Skis

  • $104.99
  • RIVA Sea-Doo 1503 Pro-Series Cylinder Head Gasket

    RS10050-CHG-1503

    Three layer stainless construction for durability & corrosion resistance. Viton coated & embossed surfaces for maximum sealing between head and cylinder block. Unique design promotes even torque load across sealing surface & requires no re-torque. Our Pro-Series Cylinder Head Gaskets were dev...

  • $149.95
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    RIVA Sea-Doo 1503 Pro-Series Cylinder Head Gasket

  • $149.95
  • OEM Sea Doo Head Gasket for 4-Tec Engines

    420950770

    Genuine Sea Doo 4-Tec head gasket. The head gasket must be replaced any time the head is removed.

  • $104.99
    SD 420950770.jpg

    OEM Sea Doo Head Gasket for 4-Tec Engines

  • $104.99
  • RIVA Sea-Doo 215/230/255/260/300 Racing Camshaft

    RS19140-BCS

    Our precision ground racing camshaft delivers a serious gain in horsepower & torque with its optimized valve lift profile. Reduced weight for quicker revving. Billet steel construction provides superior strength and torsional stability. Use with Riva Valve Train Upgrade Kit for maximum reliability. ...

  • $979.95
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    RIVA Sea-Doo 215/230/255/260/300 Racing Camshaft

  • $979.95
  • RIVA Sea-Doo Valve Spring Compression Tool

    RS19050-VCT

    Our overhead Valve Compression Tool allows easy removal of valve springs and keepers without removing cylinder head. Includes compression adapter to pressurize cylinder keeping valves in place during removal of stock springs and keepers.For use with all Sea-Doo 4-TEC 1503 engines. tool instructi...

  • $149.95
    rs19050_vct.jpeg

    RIVA Sea-Doo Valve Spring Compression Tool

  • $149.95
  • Supertech Light Weight Valve Set for Sea-Doo 185/215/255/260/300 HP Engines

    Supertech SD Valve Kit

    Designed to be a direct drop-in replacement for the OEM valves and requires no machining of cylinder head. Sold in sets of 12 (6 Intake/6 Exhaust). Includes high strength single groove valve locks. Stronger & lighter than stock valves. Intake valves weigh 42 grams. Exhaust val...

  • $489.95
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  • $341.95

  • Save: 30% off
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    Supertech Light Weight Valve Set for Sea-Doo 185/215/255/260/300 HP Engines

  • $489.95
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  • $341.95

  • Save: 30% off

    Supertech Sea-Doo Dual Valve Spring & Titanium Retainer Kit for 185/215/255/260/300 HP Engines

    Supertech Spring Kit

    These kits are made exclusively by Supertech for the Sea-Doo 4-Tec engines. Specifications: 85lb seat pressure Outer Spring OD: 26.60mm / ID: 19.60mm Inner Spring OD: 19.40mm / ID:14.20mm Seat Pressure: 85 Maximum Recommended Lift: 12+ Coil Bind MM: 19.00...

  • $409.95
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  • $349.95

  • Save: 15% off
    Supertech spring kit.jpg

    Supertech Sea-Doo Dual Valve Spring & Titanium Retainer Kit for 185/215/255/260/300 HP Engines

  • $409.95
  •  
  • $349.95

  • Save: 15% off

    RIVA Sea-Doo Valve Train Upgrade Kit 185/215/255/260/300 HP Engines

    RS19050-VTU

    The Riva Valve Train Upgrade Kit increases the reliability of your modified engine by reducing the possibility of valve float at high rpm. Includes lightweight, precision-machined titanium valve retainers, racing valve springs, base washers and OE rocker arm shaft bolts that must be replaced during ...

  • $599.95
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    RIVA Sea-Doo Valve Train Upgrade Kit 185/215/255/260/300 HP Engines

  • $599.95
  • RIVA Seadoo 4-Tec Stock Valve Retainer Upgrade Kit for 185/215/255/260/300 HP Engines

    RS19050-SRU-1

    Our Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 12 lightweight, precision-machined titanium valve retainers and 6 OE rocker arm shaft bolts that must be replaced during installation. A must for IJSBA & APBA Stoc...

  • $329.95
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    RIVA Seadoo 4-Tec Stock Valve Retainer Upgrade Kit for 185/215/255/260/300 HP Engines

  • $329.95
  • RIVA Sea-Doo Performance Valve Set, Intake +1mm, Exhaust +2MM

    RS19050-HPV-1:2

    RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake valves are built from high grade EV-8 (24-4N) stainless that is extremely resistant to corrosion. Exhaust valves are built from inconel alloy (IN-751) that...

  • $629.95
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    RIVA Sea-Doo Performance Valve Set, Intake +1mm, Exhaust +2MM

  • $629.95
  • RIVA Sea-Doo Performance Valve Set, Standard

    RS19050-HPV-0

    RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake valves are built from high grade EV-8 (24-4N) stainless that is extremely resistant to corrosion. Exhaust valves are built from inconel alloy (IN-751) that...

  • $529.95
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    RIVA Sea-Doo Performance Valve Set, Standard

  • $529.95
  • RIVA Sea-Doo Performance Valve Guides

    RS19050-PVG-KIT

    Our Sea-Doo Performance Valve Guides provide greatly improved durability for performance applications. Key Features: Constructed of Aluminum/Bronze/Nickle Alloy. Dramatically improves reliability in high boost & high RPM applications. Superior material reduces friction and improves...

  • $329.95
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    RIVA Sea-Doo Performance Valve Guides

  • $329.95
  • RIVA Sea-Doo Performance Valve Seats

    RS19050-PVS-KIT

    Our Sea-Doo Performance Valve Seats deliver the bulletproof reliability demanded by top engine builders. Key Features: Constructed of Aluminum/Bronze/Nickle Alloy. Dramatically improves reliability in high boost & high RPM applications. Durable sealing surface. Improved heat d...

  • $599.95
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    RIVA Sea-Doo Performance Valve Seats

  • $599.95
  • Viton Valve Stem Seal Kit (set of 12) For Sea Doo 185/215/255/260/300 HP Engines

    SD Viton Seal Kit

    Replace your worn out OEM Seadoo valve seals with a set of Premium Viton seals. These seals are made from high quality Viton rubber, which offers exceptional lubrication of the valve stems and guides while keeping excessive amounts of oil from entering the combustion chamber, and can withstand the h...

  • $95.88
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  • $74.99

  • Save: 22% off
    SD Viton Seal Set.jpg

    Viton Valve Stem Seal Kit (set of 12) For Sea Doo 185/215/255/260/300 HP Engines

  • $95.88
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  • $74.99

  • Save: 22% off

    Sea-Doo 1503cc 4TEC Rotax Block Guard for 185/215/255/260 HP

    SD-12026

    Our block guards have been meticulously designed and are CNC machined out of as solid block of lightweight T6 6061 aircraft grade aluminum. The block guard's function is to support and eliminate flex in the cylinder walls. Our block guards feature a corrosion-resistant anodized coating and cooling p...

  • $66.00
    block guard.png

    Sea-Doo 1503cc 4TEC Rotax Block Guard for 185/215/255/260 HP

  • $66.00
  • Aftermarket Head Casting for Sea Doo 185/215/255/260/300 HP Engines

    EC Head Casting

    Head casting for Sea Doo 4-Tec motors. Includes valve seats and guides. Valve seals, spring and retainer kits and valve kits are available here in our online store.

  • $699.99
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    Aftermarket Head Casting for Sea Doo 185/215/255/260/300 HP Engines

  • $699.99
  • Sea Doo Torque Plate 1503cc 4TEC Rotax Exhaust Spacer Kit

    SD-16001

    1-2 mph gain CNC machined 6061 Aluminum Anodized finish in either red or black Rust resistant Stainless steel bolts included Easy installation Guaranteed increase in performance; improved 80-150 RPM & 1-2 MPH. Made of CNC machined 6061 T6 aluminum, and finished in a beautiful anodized black ...

  • $85.00
    sea-doo_exhaust_spacer__63064.1493998898.jpg

    Sea Doo Torque Plate 1503cc 4TEC Rotax Exhaust Spacer Kit

  • $85.00