Sea Doo Engine Parts and Upgrades

Find PWC Performance engine parts for your Sea Doo RXP, RXT, GTX, GTI, GTR and all other Seadoo models right here at 4-tecPerformance. We offer brands from CP and Carrillo, Rotax Racing, RIVA, R&D and factory original Seadoo replacement parts.

Product Image Item Name- Model Price
2016 Sea Doo 300 HP Valve Cover and Coil upgrade kit for 2005 and older 4-Tec Engines

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

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...
2016 coil kit w/o oil pump housi $372.95

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

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

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...
2016 Coil Kit $426.95

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Riva ARP Sea Doo Flywheel Bolt Upgrade Kit for 185/215/255/260/300 HP Engines

Riva ARP Sea Doo Flywheel Bolt Upgrade Kit for 185/215/255/260/300 HP Engines

This bolt kit is a high strength replacement for OEM flywheel bolts on all Seadoo & Yamaha 1.8 liter engines. The OEM flywheel bolts are prone to...
RY10840-FWB $29.95

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RIVA Sea-Doo 300 Open Loop Cooling Kit

RIVA Sea-Doo 300 Open Loop Cooling Kit

Our Sea-Doo 300 Open Loop Cooling Kit dramatically reduces engine operating temperatures for improved performance & reliability. Includes adjustable...
RS1013-140 $389.95

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RIVA Sea-Doo 185/215/255/260 Open Loop Cooling Kit

RIVA Sea-Doo 185/215/255/260 Open Loop Cooling Kit

Our Open Loop Cooling Kit dramatically reduces engine operating temperatures for improved performance & reliability. Also allows installation of RIVA...
RS1013-50-1 $389.95

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RIVA Open Loop Cooling Thermostat Kit Seadoo 4-Tec "do it yourself"

RIVA Open Loop Cooling Thermostat Kit Seadoo 4-Tec "do it yourself"

Designed for use with aftermarket Open Loop Cooling Kits running RIVA cooling line configuration. Features include: Billet aluminum housing....
RS1013-50-TK $149.95

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Replacement Thermostat for Riva RS1013-50-TK Thermostat Housing

Replacement Thermostat for Riva RS1013-50-TK Thermostat Housing

RS1013-50-T $19.95

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Seadoo open loop cooling thermostat blockoff plate

Seadoo open loop cooling thermostat blockoff plate

Used to remove thermostat and block off thermostat housing for open loop cooling conversion
QCA-RS1013-OLC & 816J $219.95

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WORX Sea-Doo 4-Tec Thermostat

WORX Sea-Doo 4-Tec Thermostat

-160 Deg (ºF) thermostat a direct drop in replacement for OEM unit in Sea-Doo 4-tec models - Lowers engine temps up to 30 degs (ºF) - A must for...
WR04037 $80.00

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Replacement Anode for Riva Open Loop Cooling Kit

Replacement Anode for Riva Open Loop Cooling Kit

Thermostats do degrade and wear out over time. Use this replacement to ensure proper protection of your engine's cooling passages. For use with Riva...
PK-RS1013-50-OLC-PA $6.99

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

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

Our precision ground racing camshaft delivers a serious gain in horsepower & torque with its optimized valve lift profile. Reduced weight for quicker...
RS19140-BCS $979.95

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Sea Doo O rings needed for oil filter change

Sea Doo O rings needed for oil filter change

These O rings are necessary to replace when changing the oil filter on a Sea Doo 4-tec engine
420850500 & 420230920 $15.72

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ARP/RIVA Sea Doo Head Stud Kit for 185/215/255/260/300 HP Engines

ARP/RIVA Sea Doo Head Stud Kit for 185/215/255/260/300 HP Engines

Our ultra high strength cylinder head stud kit is essential equipment when upgrading internal components on your high boost Sea Doo engine. Precision...
RS10050-HSK $199.95

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Block Guard for all Sea Doo 185/215/255/260 HP Engines

Block Guard for all Sea Doo 185/215/255/260 HP Engines

Block guards help strengthen the engine and are highly recommended for engines making high boost and/or high RPM's. They are of benefit as they hold...
BL Guard $149.95

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XPS Sea Doo 4-Tec Oil Change/Maintenance Kit

XPS Sea Doo 4-Tec Oil Change/Maintenance Kit

This kit comes complete with 1 gallon of the semi-synth 4-tec oil, oil filter and o-rings This is the new oil from Sea Doo and is recommended for all...
295501157 $67.89

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Sea Doo OEM oil filter for all Sea Doo 300 HP Engines

Sea Doo OEM oil filter for all Sea Doo 300 HP Engines

Genuine Sea Doo oil filter for 300 HP ACE Engines
420956744 $17.25

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Sea Doo OEM oil filter for all Sea Doo 4-stroke engines (4-Tec)

Sea Doo OEM oil filter for all Sea Doo 4-stroke engines (4-Tec)

Genuine Sea Doo oil filter for all 4-Tec engines.
420956741 $12.98

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Riva Carrillo Connecting Rod Set for 185/215/255/260 HP Sea Doo Engines

Riva Carrillo Connecting Rod Set for 185/215/255/260 HP Sea Doo Engines

Our lightweight connecting rods improve the reliability and performance of turbocharged and supercharged watercraft engines. Manufactured to our...
RS19050-8M4724S $810.00

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Riva Carrillo Connecting Rod Set for 300 HP Sea Doo ACE Engine

Riva Carrillo Connecting Rod Set for 300 HP Sea Doo ACE Engine

Our lightweight connecting rods improve the reliability and performance of turbocharged and supercharged watercraft engines. Manufactured to our...
RS19140-4528B6M $810.00

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CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100mm

CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100mm

CP Sea Doo piston kit includes one piston, ring set, piston pin & circlips CP forged racing pistons deliver maximum reliability and performance in...
M9064 $205.75

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CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100.25mm Oversized

CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100.25mm Oversized

NOTE: these oversized pistons for the SeaDoo 300 HP Engines will require resleeving of of the block. CP Sea Doo piston kit includes one piston, ring...
M9065 $205.75

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CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100.50mm Oversized

CP Piston Kit for Sea Doo 300, 8.45:1 compression, 100.50mm Oversized

NOTE: these oversized pistons for the SeaDoo 300 HP Engines will require resleeving of of the block. CP Sea Doo piston kit includes one piston, ring...
M9066 $205.75

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CP Sea Doo 8.4:1 100 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 8.4:1 100 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9032A $205.75

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CP Sea Doo 8.4:1 100.25 mm Piston for 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 8.4:1 100.25 mm Piston for 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9033 $205.75

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CP Sea Doo 8.4:1 100.5 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 8.4:1 100.5 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9041 $205.75

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CP Sea Doo 9.5:1 100 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 9.5:1 100 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9039a $205.75

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CP Sea Doo 9.5:1 100.25 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 9.5:1 100.25 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9040 $205.75

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CP Sea Doo 9.5:1 100.5 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP Sea Doo 9.5:1 100.5 mm Piston For 185/215/255/260 HP Sea Doo Engines

CP forged racing pistons deliver maximum reliability and performance in high boost supercharged & turbo applications. High strength piston kits...
M9042 $205.75

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CP Piston Ring Set, Sea-Doo, 100.50mm

CP Piston Ring Set, Sea-Doo, 100.50mm

Purchased in bulk from the finest manufacturers in the world and packaged in combinations for your application. These sets deliver reliable and...
CPN-3957 $35.00

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RIVA Sea-Doo Valve Compression Tool for 185/215/255/260/300 HP Engines

RIVA Sea-Doo Valve Compression Tool for 185/215/255/260/300 HP Engines

Our overhead Valve Compression Tool allows easy removal of valve springs and keepers without removing cylinder head. Includes compression adapter to...
RS19050-VCT $134.96

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

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

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...
EC Head Casting $699.99

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

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

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...
Supertech Spring Kit $409.95  $349.95
15% discount


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

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

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)....
Supertech SD Valve Kit $589.95  $449.95
24% discount


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

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

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...
6 x 420641080 $43.34

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

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

Our Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 12...
RS19050-SRU $329.95

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

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

The Riva Valve Train Upgrade Kit increases the reliability of your modified engine by reducing the possibility of valve float at high rpm. Includes...
RS19050-VTU $599.95

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Ferrea RIVA High Performance Valve Set Seadoo 4-TEC, HI PER. 185/215/255/260/300 HP Engines

Ferrea RIVA High Performance Valve Set Seadoo 4-TEC, HI PER. 185/215/255/260/300 HP Engines

RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake...
RS19050-HPV-0 $529.95

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Ferrea RIVA High Performance Valve Set +1MM,+2MM, Seadoo 1503 185/215/255/260/300 HP Engines

Ferrea RIVA High Performance Valve Set +1MM,+2MM, Seadoo 1503 185/215/255/260/300 HP Engines

RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake...
RS19050-HPV-1:2 $629.95

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RIVA Sea-Doo Performance Bronze Valve Guides for Sea Doo 185/215/255/300/300 HP Engines

RIVA Sea-Doo Performance Bronze Valve Guides for Sea Doo 185/215/255/300/300 HP Engines

Fits: ALL 4-TEC MOTORS Our Sea-Doo Performance Valve Guides provide greatly improved durability for performance applications. Key Features:...
RS19050-PVG-KIT $289.95

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Copy of RIVA Sea-Doo Performance Valve Seats for 185/215/255/260/300 HP Engines

Copy of RIVA Sea-Doo Performance Valve Seats for 185/215/255/260/300 HP Engines

Key Features: Constructed of Aluminum/Bronze/Nickle Alloy. Dramatically improves reliability in high boost & high RPM applications. Durable sealing...
RS19050-PVS-KIT $599.95

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Single Bronze Valve Guide for Sea Doo for 185/215/255/260/300 HP Engines

Single Bronze Valve Guide for Sea Doo for 185/215/255/260/300 HP Engines

RS19050-PVG-1 $25.99

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

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

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...
SD Viton Seal Kit $95.88

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NGK DCPR8E Spark Plug for Seadoo 4-Tec

NGK DCPR8E Spark Plug for Seadoo 4-Tec

NGK Spark Plug for all Sea Doo 4-Tec Engines. (total of 3 required)
DCPR8E $3.50

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Genuine OEM Engine Gasket Set for Sea Doo 4-tec

Genuine OEM Engine Gasket Set for Sea Doo 4-tec

All genuine OEM Sea Doo gaskets. Not cheap copy parts that will leak. This kit contains all gaskets needed for a complete rebuild of a Sea-Doo 4-Tec...
420889773 $389.95

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Genuine Sea Doo Complete Bearing Kit for Sea Doo 4-Tec Engine

Genuine Sea Doo Complete Bearing Kit for Sea Doo 4-Tec Engine

This kit contains genuine Sea Doo bearings for the 4-Tec engines. The kit consists of the following components 4 x 420933465 Half Plain Bearing 4 x...
see product desc for p/n's $218.00

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Sea Doo OEM Connecting Rod Bolts (set of 6)

Sea Doo OEM Connecting Rod Bolts (set of 6)

Set of 6 genuine Sea Doo connecting rod bolts (for stock connecting rods)
6 x 420640990 $54.95

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Molnar Technologies Connecting Rod Set for Sea-Doo 4-tec Engine

Molnar Technologies Connecting Rod Set for Sea-Doo 4-tec Engine

Our H-Beam Connecting Rods are made from 4340 billet material, heat treated to increase tensile strength and are shot peened to increase fatigue...
Molnar Sea Doo Rod Set $549.95

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AquaSport Sea Doo Torque Plate 1503cc 4TEC Rotax Exhaust Spacer for 185/215/255/260/300 HP Engines

AquaSport Sea Doo Torque Plate 1503cc 4TEC Rotax Exhaust Spacer for 185/215/255/260/300 HP Engines

CNC machined 6061 Aluminum Black anodized finish Rust resistant Stainless steel bolts included Easy installation Guaranteed increase in performance;...
SD-16001 $95.00

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RIVA Seadoo 4-TEC Thermostat Kit RXP/RXT/GTX 4-Tec Engines

RIVA Seadoo 4-TEC Thermostat Kit RXP/RXT/GTX 4-Tec Engines

Our cool running Thermostat Kit reduces the operating temperature of your modified 4-TEC engine by 30°F for maximum reliability and performance....
RS1015 $179.95

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Replacement Valve Lock for SD for use with RIVA/Ferrea single groove valves

Replacement Valve Lock for SD for use with RIVA/Ferrea single groove valves

locks for one valve.
RS19050-VK-645 $8.00

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Lacey Powersports Light Weight Sea Doo Crank Gear for Turbo Applications

Lacey Powersports Light Weight Sea Doo Crank Gear for Turbo Applications

Much lighter than stock. Allows for a quicker revving engine. Only for use with turbo applications as the supercharger drive gear has been machined...
Turbo Flywheel $399.95

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Upgraded OEM Flywheel Bolts (06+ specs)

Upgraded OEM Flywheel Bolts (06+ specs)

03-05 4-Tec engines came with regular bolts on the flywheel and many have backed out or even sheered off, especially when using an aftermarket ECU...
295501043 $17.40

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

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

Genuine Sea Doo replacement head bolts (set of 8)
8 x 420641110 $79.76

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RIVA Seadoo 1503 Pro-Series Cylinder Head Gasket 4-Tec Engines

RIVA Seadoo 1503 Pro-Series Cylinder Head Gasket 4-Tec Engines

Our Pro-Series Cylinder Head Gaskets were developed to withstand severe heat & pressure generated by high-boost and high horsepower applications...
RS10050-CHG-1503 $149.95

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OEM Sea Doo Head Gasket for 4-Tec Engines

OEM Sea Doo Head Gasket for 4-Tec Engines

Genuine Sea Doo 4-Tec head gasket. The head gasket must be replaced any time the head is removed.
420950770 $92.49

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OEM Sea Doo Head Gasket for 300 HP Skis

OEM Sea Doo Head Gasket for 300 HP Skis

Genuine Sea Doo 4-Tec head gasket. The head gasket must be replaced any time the head is removed.
420950772 $94.95

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Sea Doo 4-Tec PTO housing Gasket

Sea Doo 4-Tec PTO housing Gasket

Genuine Sea Doo 4-tec PTO housing gasket. Fits all SeaDoo 4-Tec Engines
420931130 $18.49

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CP Replacement Ring Kit (set for 1 piston)

CP Replacement Ring Kit (set for 1 piston)

This is a replacement ring kit for a CP piston. This kit is for one single piston. Please leave a note in the comments section when you place the...
CP replacement ring set (1 pisto $35.00

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RIVA Sea-Doo 1.5L Engine Replacement Sleeve

RIVA Sea-Doo 1.5L Engine Replacement Sleeve

Our high-quality ductile iron replacement sleeve is considerably harder and more abrasion resistant than OEM sleeves providing excellent oil...
RS10050-SLV-1503 $99.95

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Darton Sea-Doo 1503 Pro-Series Cylinder Sleeves

Darton Sea-Doo 1503 Pro-Series Cylinder Sleeves

Darton has engineered a superior patented (patent #6,799,541) solution by using a unique designed cylinder sleeve that, when siamesed and nested,...
800-850 $867.95

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BRP OEM SEA DOO IGNITION COIL - 296000307

BRP OEM SEA DOO IGNITION COIL - 296000307

One new OEM ignition coil. Sea-Doo OEM# 296000307 Fits: All Sea-Doo 4-TEC models GTX GTI RXP RXT Wake
296000307 $108.95

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Sea Doo 300 Shop Manual

Sea Doo 300 Shop Manual

219100815 $149.95

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Monthly Specials For JanuaryView All

Supertech Light Weight Valve Set for Sea-Doo 185/215/255/260/300 HP Engines
$589.95  $449.95
24% discount
Supertech Sea-Doo Dual Valve Spring & Titanium Retainer Kit for 185/215/255/260/300 HP Engines
$409.95  $349.95
15% discount

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