Aftermarket Parts
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Sold Out, please call for ETA.
Seastar Dual Tm Chrome C&B Inserts Tri Ch7841P
Seastar
$652.09 $9.25Seastar Dual Tm Chrome C&B Inserts Tri Ch7841PThe ergonomics and features of our controls are the most advanced available and are suitable for most types of boat with dual engine applications. The...- Part Number:
- 1-CH7841P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Dual Lever w/ Trim
$652.09 $9.25 -
Seastar Fitting Kit (O/B Application) Hf5501
Seastar
$310.39 $178.62Seastar Fitting Kit (O/B Application) Hf5501These fitting kits enable installation of a 2nd station helm or an autopilot pump into an existing SeaStar steering system. Some additional parts which are...- Part Number:
- 1-HF5501
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Outboard Kit
$310.39 $178.62 -
Seastar Fitting Kit Qc F/Powr Purge Jr Hp6170
Seastar
$146.49 $140.88Seastar Fitting Kit Qc F/Powr Purge Jr Hp6170- Part Number:
- 1-HP6170
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Quick Connect Hose Ends
$146.49 $140.88 -
SeaStar HC46483 BayStar Outboard 8" Stroke 7.24 Cubic Inch Cylinder
Seastar
$765.19 $636.99Seastar Baystar Ob Compact Short Plate Hc4648H HC46483 This balanced cylinder features a compact design that fits most splashwells. BayStar allows you to install all of the safety, reliability and...- Part Number:
- 1-HC46483
- Availability:
- In Stock - Ships same or next business day.
- Mount:
- Compact Cylinder - Short Plate - Johnson/Evinrude/Mercury/Marine/Yamaha
$765.19 $636.99 -
SeaStar HC46583 BayStar Outboard 8" Stroke 7.24 Cubic Inch Cylinder
Seastar
$765.19 $636.99Seastar Baystar Ob Compact Cyl Yamaha Hc4658H HC46583 This balanced cylinder features a compact design that fits most splashwells. BayStar allows you to install all of the safety, reliability and...- Part Number:
- 1-HC46583
- Availability:
- In Stock - Ships same or next business day.
- Mount:
- Compact Cylinder - Johnson/Evinrude/Suzuki/Yamaha
$765.19 $636.99 -
Sold Out, please call for ETA.
Seastar Hdwe Kit - Mount 3 Twin 308727
Seastar
$97.39 $62.84Seastar Hdwe Kit - Mount 3 Twin 308727- Part Number:
- 1-308727
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Hardware kit
- Fits:
- MT-3 Twin
$97.39 $62.84 -
Seastar Helm Adapter Replacement Hp6148
Seastar
$261.89 $226.93Seastar Helm Adapter Replacement Hp6148- Part Number:
- 1-HP6148
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Helm Adapter Kit for Power Purge Jr.
$261.89 $226.93 -
Seastar Helm Jet Boat Steering 135" Sh5087P
Seastar
$235.29 $221.27Seastar Helm Jet Boat Steering 135" Sh5087PDesigned exclusively for jet boats, JBS features a choice of two steering arcs, a real steering cable (not a control cable) plus an assortment of mounting...- Part Number:
- 1-SH5087P
- Availability:
- In Stock - Ships same or next business day.
- Type:
- JBS Helm 135 Deg - turning arc
$235.29 $221.27 -
Sold Out, please call for ETA.
Seastar Helm Jet Boat Steering 270" Sh5088P
Seastar
$231.79 $199.29Seastar Helm Jet Boat Steering 270" Sh5088PDesigned exclusively for jet boats, JBS features a choice of two steering arcs, a real steering cable (not a control cable) plus an assortment of mounting...- Part Number:
- 1-SH5088P
- Availability:
- In Stock - Ships same or next business day.
- Type:
- JBS Helm 270 Deg - turning arc
$231.79 $199.29 -
Sold Out, please call for ETA.
Seastar Helm Seal Kit For 50 Series Hs05
Seastar
$70.39 $45.06Seastar Helm Seal Kit For 50 Series Hs05- Part Number:
- 10-HS05
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For H50 Series
$70.39 $45.06 -
Sold Out, please call for ETA.
Seastar Helm Seal Kit-20 Ser-Ext Black Hs01
Seastar
$70.39 $39.63Seastar Helm Seal Kit-20 Ser-Ext Black Hs01- Part Number:
- 10-HS01
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For H20 Series w/external Black seal
$70.39 $39.63 -
Sold Out, please call for ETA.
Seastar Helm Seal Kit-20 Ser-Int Seal Hs02
Seastar
$70.39 $39.63Seastar Helm Seal Kit-20 Ser-Int Seal Hs02- Part Number:
- 10-HS02
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For H20 Series w/internal seal
and White visible wiper
$70.39 $39.63 -
Sold Out, please call for ETA.
Seastar Helm Seal Kit-40 Ser-Int Seal Hs04
Seastar
$70.39 $39.63Seastar Helm Seal Kit-40 Ser-Int Seal Hs04- Part Number:
- 10-HS04
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For H40 series w/internal seal
and White visible wiper
$70.39 $39.63 -
Sold Out, please call for ETA.Special Order! See availaility for details
Seastar Helm-Seastar Fm 2.4 Commercial Hh5224-3
Seastar
$1,164.29 $1,026.93Seastar Helm-Seastar Fm 2.4 Commercial Hh5224-3Efficient, safe and reliable. Easy to install. Feature helm rotor supported by 3 roller bearings, ball bearing piston race, simplified integrated metal...- Part Number:
- 1-HH52243
- Availability:
- In Stock - Ships same or next business day.
- Type:
- SeaStar 2.4 Commercial Duty
- Mount:
- Front
$1,164.29 $1,026.93 -
Sold Out, please call for ETA.
Seastar Helm-Seastar Pro 2.0 Sporttilt Hh6190-3
Seastar
$1,301.49 $1,009.02Seastar Helm-Seastar Pro 2.0 Sporttilt Hh6190-3SeaStar Pro is suited for critical high speed outboard boat applications like Bass, Flats, Combo Race & Ski, and other performance boats with speeds in...- Part Number:
- 1-HH61903
- Availability:
- In Stock - Ships same or next business day.
- Model:
- 2
$1,301.49 $1,009.02 -
Sold Out, please call for ETA.
Seastar Helm-Seastar Rm 1.7 Hh5261-3
Seastar
$978.69 $791.86Seastar Helm-Seastar Rm 1.7 Hh5261-3Efficient, safe and reliable. Easy to install. Feature helm rotor supported by 3 roller bearings, ball bearing piston race, simplified integrated metal...- Part Number:
- 1-HH52613
- Availability:
- In Stock - Ships same or next business day.
- Type:
- SeaStar 1.7
- Mount:
- Rear
$978.69 $791.86 -
Sold Out, please call for ETA.
Seastar Helm-Seastar Rm 2.4 Hh5262-3
Seastar
$1,187.99 $1,047.67Seastar Helm-Seastar Rm 2.4 Hh5262-3Efficient, safe and reliable. Easy to install. Feature helm rotor supported by 3 roller bearings, ball bearing piston race, simplified integrated metal...- Part Number:
- 1-HH52623
- Availability:
- In Stock - Ships same or next business day.
- Type:
- SeaStar 2.4
- Mount:
- Rear
$1,187.99 $1,047.67 -
Seastar Hose Kit-2Pc Seastar O/B 28 Ft Ho5128
Seastar
$387.99 $350.28Seastar Hose Kit-2Pc Seastar O/B 28 Ft Ho5128Includes two hoses - can be used with all SeaStar systems, except SeaStar PRO, BayStar, Capilano and 3-line inboard systems. ID of 5/16".- Part Number:
- 1-HO5128
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 28'
- Box:
- 2
$387.99 $350.28 -
Sold Out, please call for ETA.
Seastar Hps Rotary Helm Sh5180
Seastar
$266.19 $226.81Seastar Hps Rotary Helm Sh5180Collet & hitch pin secure QC cable to helmOne bolt holds spent travel tubeSafe-T II cast finish helm has No FeedBack&trade, feature, HPS gold-finish helm does not- Part Number:
- 1-SH5180P
- Availability:
- In Stock - Ships same or next business day.
- Type:
- HPS Rotary Helm (HPS)
$266.19 $226.81Sold 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
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.