Aftermarket Parts
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Sold Out, please call for ETA.
Seastar Hyn Cylinder with Fixed Mnt K22
Seastar
$1,018.29 $22.10Seastar Hyn Cylinder with Fixed Mnt K22Inboard unit used in Seastar, Capilano and Hynautic systems- Part Number:
- 10-K22
- Availability:
- In Stock - Ships same or next business day.
- Description:
- 34.12" (retracted) replaces K29 steering cylinder
$1,018.29 $22.10 -
Seastar I/O & Inboard Fitting Kit Hf5502
Seastar
$138.59 $100.50Seastar I/O & Inboard Fitting Kit Hf5502These fitting kits enable installation of a 2nd station helm or an autopilot pump into an existing SeaStar steering system. Some additional parts which are supplied with the helm pump will be re-used.- Part Number:
- 1-HF5502
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Inboard/Sterndrive Kit
$138.59 $100.50 -
Sold Out, please call for ETA.
Seastar I6300 Kit-Twin Eng No Tilt-Trm I6312
Seastar
$12.80Seastar I6300 Kit-Twin Eng No Tilt-Trm I6312Suitable for all mechanical throttle/mechanical shift applications. Delivers finger tip precise control of your engine's shift and throttle functions. Control heads are available with or without trim switches...- Part Number:
- 1-I6312
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Dual Engine
- Volts:
- 43458
$12.80 -
Sold Out, please call for ETA.
Seastar I6800 Add-Sta 1-Eng No Trim I6811A
Seastar
$1,197.59 $9.25Seastar I6800 Add-Sta 1-Eng No Trim I6811AThe i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6811A
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Add a station: 1 engine w/o Trim
$1,197.59 $9.25 -
Sold Out, please call for ETA.
Seastar I6800 Add-Sta 2-Eng No Trim I6812A
Seastar
$1,427.49 $16.89Seastar I6800 Add-Sta 2-Eng No Trim I6812AThe i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6812A
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Add a station: 2 engine w/o Trim
$1,427.49 $16.89 -
Sold Out, please call for ETA.
Seastar I6800 Add-Sta 2-Eng W-Trim I6852A
Seastar
$1,482.49 $16.89Seastar I6800 Add-Sta 2-Eng W-Trim I6852AThe i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6852A
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Add a station: 2 engine w/Trim
$1,482.49 $16.89 -
Sold Out, please call for ETA.
Seastar I6800 Kit 1-Eng 1-Sta No Trim I6811
Seastar
$2,763.69 $24.00Seastar I6800 Kit 1-Eng 1-Sta No Trim I6811The i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6811
- Availability:
- In Stock - Ships same or next business day.
- Description:
- I6800 Kit: 1 engine - 1 station - w/o trim
$2,763.69 $24.00 -
Sold Out, please call for ETA.
Seastar I6800 Kit 2-Eng 1-Sta No Trim I6812
Seastar
$24.00Seastar I6800 Kit 2-Eng 1-Sta No Trim I6812The i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6812
- Availability:
- In Stock - Ships same or next business day.
- Description:
- I6800 Kit: 2 engine - 1 station - w/o trim
$24.00 -
Sold Out, please call for ETA.
Seastar I6800 Kit 2-Eng 1-Sta W-Trim I6852
Seastar
$4,689.69 $24.00Seastar I6800 Kit 2-Eng 1-Sta W-Trim I6852The i6800 system delivers precise control of a boat's shift and throttle functions and is suitable for all single or twin engine applications w/ mechanical shift and throttle. The actuators link to the control...- Part Number:
- 1-I6852
- Availability:
- In Stock - Ships same or next business day.
- Description:
- I6800 Kit: 2 engine - 1 station - w/trim
$4,689.69 $24.00 -
Sold Out, please call for ETA.
Seastar I6800-Setup Display Tool Epsk1207
Seastar
$1,076.69 $1,005.96Seastar I6800-Setup Display Tool Epsk1207- Part Number:
- 1-EPSK1207
- Availability:
- In Stock - Ships same or next business day.
- Description:
- EST Display Setup Tool
$1,076.69 $1,005.96 -
Sold Out, please call for ETA.
Seastar Insert 5/16 Nylon Tubing 530045
Seastar
$7.99 $0.00Seastar Insert 5/16 Nylon Tubing 530045- Part Number:
- 1-530045
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Insert - 5/16" nylon tubing
$7.99 $0.00 -
Sold Out, please call for ETA.
Seastar Ke-5 Harness Trolling Output Nm062705
Seastar
$45.14 $0.00Seastar Ke-5 Harness Trolling Output Nm062705Modern styling, various color/finish control head options, single or twin engine versions. KE-5 - Suitable for full electronic engine/gearbox combinations. KE-6 - Suitable for electronic throttle and...- Part Number:
- 1-NM062705
- Availability:
- In Stock - Ships same or next business day.
- Description:
- KE-5 Harness Trolling Output
$45.14 $0.00 -
Sold Out, please call for ETA.
Seastar Ke4+ Breaker 20 Amp Nj0514-00
Seastar
$103.69 $0.00Seastar Ke4+ Breaker 20 Amp Nj0514-00A single, electronic solution designed specifically to eliminate all those cumbersome linkages, push-pull cables, all hydraulic and pneumatic systems. The perfect answer to pinpoint shift and throttle control for...- Part Number:
- 1-NJ051400
- Availability:
- In Stock - Ships same or next business day.
- Description:
- KE4 Circuit Breaker - 20A
$103.69 $0.00 -
Sold Out, please call for ETA.
Seastar Ke4+ Trim Circuit Harness Nj0772-00
Seastar
$190.89 $0.00Seastar Ke4+ Trim Circuit Harness Nj0772-00- Part Number:
- 1-NJ077200
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Trim circuit harness
$190.89 $0.00 -
Seastar Kit Connection Master SS Sa27255
Seastar
$481.69 $379.46Seastar Kit Connection Master SS Sa27255- Part Number:
- 1-SA27255P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Transom Support Mount - Stainless Steel - For all inboard and most outboard motor installations.Includes clamp block - clevis kit and support tube.
$481.69 $379.46 -
Seastar Morse Pivot-40 Series 31537
Seastar
$41.09 $27.13Seastar Morse Pivot-40 Series 31537- Part Number:
- 1-031537
- Availability:
- In Stock - Ships same or next business day.
- Cable:
- 4300
- A:
- 1/4"
- B:
- 1/2"
- C:
- 1/2"
- D:
- 13/64"
- E:
- 7/8"
$41.09 $27.13 -
Seastar Morse Stop Collar 37693
Seastar
$34.29 $22.85Seastar Morse Stop Collar 37693- Part Number:
- 1-037693
- Availability:
- In Stock - Ships same or next business day.
- Cable:
- 3300
- A:
- 3/8"
- B:
- 3/8"
- C:
- 11902
- D:
- 3/32"
$34.29 $22.85 -
Seastar Mounting Hardware And Slide Plate F Hp6031
Seastar
$544.79 $413.93Seastar Mounting Hardware And Slide Plate F Hp6031- Part Number:
- 1-HP6031
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Mounting hardware & slide plate for OB cylinder
$544.79 $413.93 -
Sold Out, please call for ETA.
Seastar Neut. Safety Switch Kit Ch4400 Ca68075P
Seastar
$65.29 $45.40Seastar Neut. Safety Switch Kit Ch4400 Ca68075PFor use with CH4400 series controls.- Part Number:
- 1-CA68075P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- NSS for CH4400 Controls
$65.29 $45.40 -
Sold Out, please call for ETA.
Seastar Neutral Safety Switch 300928
Seastar
$65.19 $43.80Seastar Neutral Safety Switch 300928For use with CH4400 series controls.- Part Number:
- 1-300928
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Neutral Safety Switch
$65.19 $43.80
Aftermarket Boat Parts & Marine Engine Supplies
Looking for dependable aftermarket boat parts? PowerBoatSupply.com carries a wide selection of aftermarket marine parts, engine supplies, oils, fuel components, steering parts, anodes, tools, and maintenance essentials for boat owners and marine professionals.
Whether you're handling routine service, replacing worn components, or stocking up for the season, our aftermarket parts selection helps keep your boat running smoothly and reliably.
Marine Engine Parts & Maintenance Essentials
Keep your motor protected and performing with key maintenance categories like engine parts, motor oil, marine oil systems and accessories, and lubricants, fluids and sealants.
- Engine Parts – Replacement components for service and repair
- Motor Oil – Marine-grade oils for routine maintenance
- Oil Systems & Accessories – Helpful products for oil changes and upkeep
- Lubricants, Fluids & Sealants – Protect, seal, and maintain marine systems
Fuel, Steering & Control Parts
Reliable fuel delivery and responsive steering are critical on the water. Browse marine fuel parts and steering and controls to help maintain safer handling, smoother operation, and dependable performance.
- Fuel Parts – Components for reliable fuel system performance
- Steering & Controls – Parts that help improve control and handling
- Engine Instruments – Monitor key systems while underway
- Engine Tools – Tools for maintenance, repair, and service work
Anodes, Instruments & Service Tools
Small parts can make a big difference in long-term protection and performance. Shop marine anodes, engine instruments, and engine tools to help protect your boat, monitor performance, and complete service work more efficiently.
- Anodes – Help protect metal components from corrosion
- Engine Instruments – Gauges and monitoring products for marine engines
- Engine Tools – Service tools for DIY boaters and marine technicians
- Maintenance Supplies – Everyday essentials for seasonal upkeep
Yamaha Oil Change Kits & Routine Service Products
Staying ahead of routine service is one of the best ways to protect your investment. PowerBoatSupply.com also carries Yamaha oil change kits and other service products that make maintenance easier and more convenient.
- Oil Change Kits – Convenient service kits for scheduled maintenance
- Marine Oils – Protect engines under real boating conditions
- Sealants & Fluids – Support repairs, installs, and regular service
- Tools & Accessories – Make maintenance faster and cleaner
Why Buy Aftermarket Marine Parts from PowerBoatSupply.com?
PowerBoatSupply.com helps boat owners find reliable parts and maintenance products without the guesswork. From routine oil service to engine repair, fuel system work, corrosion protection, and steering maintenance, our aftermarket category is built to support the jobs boaters handle every season.
- Wide selection of aftermarket boat parts and marine supplies
- Products for DIY boat owners and marine professionals
- Helpful categories for seasonal service and repairs
- Fast shipping and dependable support
Shop aftermarket boat parts today and get the engine parts, oils, fuel components, steering supplies, anodes, tools, and maintenance products you need to keep your boat ready for the water.