Aftermarket Parts
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Sierra Oil Drain Kit 1/2 -20 Thread 18-7891
Sierra
$149.59 $114.13Sierra Oil Drain Kit 1/2 -20 Thread 18-7891Total length 42 inches.- Part Number:
- 47-7891
- Availability:
- In Stock - Ships same or next business day.
- Description:
- For GM - Chrysler & Most Ford oil pans - 1/2" 20 Threads
$149.59 $114.13 -
Sierra Water Shutter-Exhaust MerCruiser #60930 18-2727
Sierra
$41.39 $33.37Sierra Water Shutter-Exhaust MerCruiser #60930 18-2727- Part Number:
- 47-2727
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 60930
$41.39 $33.37 -
Martyr Anodes Sl Shaft Anode Cmx-4 (1-1/8 ) Cmx04Al
Martyr Anodes
$21.59 $10.20Martyr Anodes Sl Shaft Anode Cmx-4 (1-1/8 ) Cmx04Al Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water- Part Number:
- 194-CMX04AL
- Availability:
- In Stock - Ships same or next business day.
- ID:
- 1-1/8"
- OD:
- 2-1/8"
- Length:
- 2-1/8"
- Material:
- Aluminum
$21.59 $10.20 -
Sold Out, please call for ETA.
OEM MerCruiser Power Trim Pump Harness Adapter 84-865771A02
Mercury Marine / Quicksilver
$17.16 $16.99OEM MerCruiser Power Trim Pump Harness Adapter 84-865771A02 This adapter will adapt from old style round 3 prong to the new style flat plug This trim adapter converts the traditional Mercury trim...- Part Number:
- 710-84-865771A02
- Availability:
- In Stock - Ships same or next business day.
$17.16 $16.99 -
Perko 1-1/4 In-Line Valve 0456Dp7
Perko
$195.79 $129.99Perko 1-1/4 In-Line Valve 0456Dp7 Simple as connecting a garden hose! Flush your boat engine safely and easily. Plastic construction, stainless steel spring. Transparent body allows for visual...- Part Number:
- 9-0456DP7
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Valve
- Hose:
- 1-1/4"
$195.79 $129.99 -
Sold Out, please call for ETA.
Racor Element-Replacement 900 Turbine 10M 2040N-10
Racor
$13.99 $1.30Racor Element-Replacement 900 Turbine 10M 2040N-10Waterproof, rustproof, dirtproof. Engineered to repel water and remove solid contaminants before they can damage precision engine components. Racor...- Part Number:
- 62-2040N10
- Availability:
- In Stock - Ships same or next business day.
- Micron:
- 10
- End Cap:
- Blue
- Fits:
- 900
$13.99 $1.30 -
Sea-Dog Line Tiller Rope Spring-4 Inch 2/Cd 091814-1
SEA-DOG LINE
$12.00 $9.91Sea-Dog Line Tiller Rope Spring-4 Inch 2/Cd 091814-1- Part Number:
- 354-0918141
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 5"
- Compressed:
- 6"
- Pack:
- 2
$12.00 $9.91 -
Seachoice Male Hose Barb-3/8 x 3/8 Npt 20791
Seachoice
$9.04 $6.49Seachoice Male Hose Barb-3/8 x 3/8 Npt 20791 NOT TO BE USED IN POTABLE WATER SYSTEMS. • All brass machined fittingsIdeal for fuel fitting applications.- Part Number:
- 50-20791
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8" NPT
- Hose:
- 3/8"
$9.04 $6.49 -
Seastar OMC 400 Control Cable CC170
Seastar
$49.49 $41.25Seastar OMC 400 Control Cable CC170 Stainless steel and brass fittings with stainless steel core. Fits pre-1979 OMC/Johnson/Evinrude w/BRP/OMC controls.- Part Number:
- NW-1CC170
- Availability:
- In Stock - Ships same or next business day.
$49.49 $41.25 -
Sold Out, please call for ETA.
Seastar Solutions Stainless Steel Replacement Control Lever Handle 50010 Ca69060P
Seastar
$121.69 $93.18Seastar Solutions Stainless Steel Replacement Control Lever Handle 50010 Ca69060P Replacement Stainless Steel Lever fits Teleflex CH5600 SLT and Morse Twin SR controls onlyFEATURES- Part Number:
- 1-CA69060P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- SS Replacement Lever
$121.69 $93.18 -
Sierra Eng Coupler MerCruiser 55 1446 18-2171
Sierra
$380.89 $298.86Sierra Eng Coupler MerCruiser 55 1446 18-2171- Part Number:
- 47-2171
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Replaces: 76850A2 - For all GM engines except MR/ALPHA/BRAVO with "Triangular" - 3-Bolt coupler
$380.89 $298.86 -
Sierra Flush Kit-Dual Water Pu Merc-Ete 18-9895
Sierra
$56.29 $43.11Sierra Flush Kit-Dual Water Pu Merc-Ete 18-9895Replaces: Mercury/Evinrude 881150K1- Part Number:
- 47-9895
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Mercury and E-Tec Engine with Nose Cone Dual Water Pickup.
$56.29 $43.11 -
Sierra Gear Lube-Hi Perf Qt 18-9650-2
Sierra
$23.09 $19.41Sierra Gear Lube-Hi Perf Qt 18-9650-2- Part Number:
- 47-96502
- Availability:
- In Stock - Ships same or next business day.
- Size:
- Quart
$23.09 $19.41 -
Centek Muffler-Minimax 3X3 1050300
Centek
$391.99 $281.62Centek Muffler-Minimax 3X3 1050300 For use where there is a shortage of space or V Drive applications. For Gas/Diesel fuel type. For above the waterline only.- Part Number:
- 383-1050300
- Availability:
- In Stock - Ships same or next business day.
- Ports:
- 3"
- Dia.:
- 6.38"
- Length:
- 13.75"
$391.99 $281.62 -
Centek Replacement Filter For Bk-1 8Bf11R
Centek
$105.99 $79.79Centek Replacement Filter For Bk-1 8Bf11R Replacement filter cartridge filters bilge water discharge to remove hydrocarbons.- Part Number:
- 383-8BF11R
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Replacement Filter
- Capacity:
- 25 GPM
- Fits:
- 8BK1
- Length:
- 10"
$105.99 $79.79 -
GROCO 1/4" NPT Bronze Inline Fuel Valve FV-250
Groco
$30.00 $21.531/4" NPT Bronze Inline Fuel Valve Features: Selectable handle rotation Full flow Mount foot included C83600 bronze construction Stainless steel handle and hardware 400 WOG PTFE seats and...- Part Number:
- 34-FV250
- Availability:
- In Stock - Ships same or next business day.
- Thread NPT:
- 1/4"
- A:
- 4.1
- B:
- 2.22
- C:
- 1.54
- D:
- 1.77
$30.00 $21.53 -
Racor Replacement Heat Deflector 500Ma Rk 15104
Racor
$154.29 $112.82Racor Replacement Heat Deflector 500Ma Rk 15104- Part Number:
- 62-RK15104
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Heat Deflector Shield Kit (includes # RK11340 Drain Fitting O-ring Kit & RK111910 Drain Fitting Kit)
- Fits:
- 500MA Series
$154.29 $112.82 -
Sea-Dog Line Gas Tank Vent Nylon White 357105-1
SEA-DOG LINE
$7.25 $6.75Sea-Dog Line Gas Tank Vent Nylon White 357105-1- Part Number:
- 354-3571051
- Availability:
- In Stock - Ships same or next business day.
- Material:
- White Nylon
- A:
- 1"
- B:
- 2-1/8"
- C:
- 5/8"
- D:
- 1-1/8"
$7.25 $6.75 -
Seachoice Adj Fuel Tank Sender-4-24" 15471
Seachoice
$61.21 $43.99Seachoice Adj Fuel Tank Sender-4-24" 15471 Can be used for gas or dieselMade of non-ferrous materials and compatible with 35 (full) to 240 (empty) ohm gaugesMounting screws and gasket included- Part Number:
- 50-15471
- Availability:
- In Stock - Ships same or next business day.
- Tank Depth:
- 4" to 24"
$61.21 $43.99 -
Seachoice Alpha One Gen 2 Kit Mg Freshwater 50-95031
Seachoice
$82.95 $57.74Seachoice Alpha One Gen 2 Kit Mg Freshwater 50-95031 Cadmium free, environmentally friendly. • Aluminum: For salt and brackish waterConform to: Mil-Spec A-24779(SH)- Part Number:
- 50-95031
- Availability:
- In Stock - Ships same or next business day.
- Material:
- Magnesium
$82.95 $57.74
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.