Aftermarket Parts
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Seastar Control Cable 4300BC TFXtreme CCX430
Seastar
$112.99Seastar Control Cable 4300BC TFXtreme CCX430 4300BC/43BC universal type cables for heavy duty applications with a clamp end at the control and a bulkhead end at the drive. Splined core allows easy...- Part Number:
- NW-1CCX430
- Availability:
- In Stock - Ships same or next business day.
$112.99 -
Sierra Filter-Water Separator 21M Long 18-7845
Sierra
$16.49 $15.79Sierra Filter-Water Separator 21M Long 18-7845Sierra fuel water separators remove over 98.8% of emulsified water from your gasoline. Sierra's 10 micron filters are over 90% efficient at removing...- Part Number:
- 47-7845
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Long - 4.35"
- Replaces:
- Mercury - 35-802893Q - Yamaha - ABB-FUELF-IL-TR
$16.49 $15.79 -
Sierra O Ring OMC303360 MerCruiser 25-35027 18-7117
Sierra
$3.59 $2.64Sierra O Ring OMC303360 MerCruiser 25-35027 18-7117- Part Number:
- 47-7117
- Availability:
- In Stock - Ships same or next business day.
$3.59 $2.64 -
NGK Spark Plugs 3249 Spark Plug 3249
NGK Spark Plugs
$12.49 $7.11NGK Spark Plugs 3249 Spark Plug 3249 Racing plugs feature a center electrode with a V-groove and a thicker ceramic shell for the high-heat applications in racing engines. Special center...- Part Number:
- 41-R56738
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3249
- Pack:
- 4
- What's in the Box:
- (1) Spark Plug
$12.49 $7.11 -
NGK Spark Plugs 7862 Spark Plug 7862
NGK Spark Plugs
$21.29 $12.26NGK Spark Plugs 7862 Spark Plug 7862 Original equipment on many late model applications Platinum at the fine-wire center electrode as well as at the ground electrode provides extended service...- Part Number:
- 41-PZTR5A15
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 7862
- What's in the Box:
- (1) Spark Plug
$21.29 $12.26 -
Sierra Ignition Coil Mc He392-805570A2 18-5438
Sierra
$82.09 $57.00Sierra Ignition Coil Mc He392-805570A2 18-5438- Part Number:
- 47-5438
- Availability:
- In Stock - Ships same or next business day.
$82.09 $57.00 -
Martyr Anodes 2 13/16 Zinc Rudder Anode Cmr02
Martyr Anodes
$17.79 $11.99Martyr Anodes 2 13/16 Zinc Rudder Anode Cmr02 Zinc: For use in salt waterAluminum: For use in brackish waterMagnesium: For use in fresh water- Part Number:
- 194-CMR02
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2-13/16" dia. x 1/2"
- Material:
- Zinc
$17.79 $11.99 -
NGK Spark Plugs 6431 Spark Plug 6431
NGK Spark Plugs
$8.69 $5.47NGK Spark Plugs 6431 Spark Plug 6431 Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BU8H
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6431
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$8.69 $5.47 -
Racor Replacement Element For 660Rrac02 S3232Tul
Racor
$64.29 $46.59Racor Replacement Element For 660Rrac02 S3232Tul Aquabloc® II filter replacement elements are offered as retrofits to Racor clear or metal bowl filter assemblies Long-life with 98% filtration...- Part Number:
- 62-S3232TUL
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Element
- Micron:
- 10
- For:
- 660R-RAC-01
- Application:
- I/O
$64.29 $46.59 -
Sierra Shift Cable Kit - Bravos 18-2604
Sierra
$230.99 $165.67Sierra Shift Cable Kit - Bravos 18-2604- Part Number:
- 47-2604
- Availability:
- In Stock - Ships same or next business day.
$230.99 $165.67 -
NGK Spark Plugs 2318 Spark Plug Iridium 2318
NGK Spark Plugs
$18.29 $10.90NGK Spark Plugs 2318 Spark Plug Iridium 2318 Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling...- Part Number:
- 41-BR6FIX
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 2318
- What's in the Box:
- (1) Spark Plug
$18.29 $10.90 -
Perko FlushPro Inboard Engine Fresh Water Flush Kit (1-1/4) 0457Dp7
Perko
$327.99 $202.05Flush Pro Valve Kit - 1-1/4"Finally! Freshwater flushing of your inboard is as simple as connecting a garden hose.Features: Polymer Stainless Steel Spring- Part Number:
- 9-0457DP7
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 1-1/4"
$327.99 $202.05 -
Seachoice Tiller Rope Pulley W/Eye Stra 28501
Seachoice
$24.31 $19.53Seachoice Tiller Rope Pulley W/Eye Stra 28501 Pair of stainless steel and plastic pulleys with two stamped stainless steel eye strapsMaximum rope size: 1/4"OD of sheave: 2-5/16"- Part Number:
- 50-28501
- Availability:
- In Stock - Ships same or next business day.
- Pack:
- 1 pr.
$24.31 $19.53 -
Sold Out, please call for ETA.
Uflex Front Seal Kit for Up Series Helms UP, UP28, UP33, UP39 (40875V)
Uflex
$36.19 $32.16Uflex Front Seal Kit-Up Series Helm 40875V- Part Number:
- 216-40875V
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- UP25 - UP28 - UP33 - UP39 & UP45
$36.19 $32.16 -
Uflex Mach-14 OMC Control Cable
Uflex
$67.79 $55.19Uflex Mach-14 OMC Control Cable Heavy duty 18 laywire conduit for long life & high efficiency for smooth operation and reduced bend radius. Ideal for long complex cable runs. High resistance blue...- Part Number:
- NW-216MACH14
- Availability:
- In Stock - Ships same or next business day.
$67.79 $55.19 -
NGK Spark Plugs 7164 Spark Plug Iridium 7164
NGK Spark Plugs
$18.29 $10.90NGK Spark Plugs 7164 Spark Plug Iridium 7164 Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling...- Part Number:
- 41-TR55IX
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 7164
- What's in the Box:
- (1) Spark Plug
$18.29 $10.90 -
Racor Vacuum Gauge Kit T-Handle Rk19671
Racor
$151.19 $126.27Racor Vacuum Gauge Kit T-Handle Rk19671 T-Handle Vacuum Gauge; -30 to 0 inHg, Bottom Mount, Stainless Steel T-handle- Part Number:
- 62-RK19671
- Availability:
- In Stock - Ships same or next business day.
$151.19 $126.27 -
Sierra Seal Kit-Injection Mpi GM Sb-Bb Gen+ 18-7696
Sierra
$8.49 $7.70Sierra Seal Kit-Injection Mpi GM Sb-Bb Gen+ 18-7696- Part Number:
- 47-7696
- Availability:
- In Stock - Ships same or next business day.
$8.49 $7.70 -
Uflex QC Helm Steering Cable M66
Uflex
$195.49 $139.99Uflex QC Helm Steering Cable M66 The M66 Universal Rotary Steering Cable is the one and only cable that directly replaces Uflex, Teleflex/Seastar Solutions SSC62 QC® and Morse Command 290® steering...- Part Number:
- NW-216M66
- Availability:
- In Stock - Ships same or next business day.
$195.49 $139.99 -
Racor Filter-Replacement 320R-490Rrac01 10M S3227
Racor
$42.49 $32.31Racor Filter-Replacement 320R-490Rrac01 10M S3227 Aquabloc® II filter replacement elements are offered as retrofits to Racor clear or metal bowl filter assemblies Long-life with 98% filtration...- Part Number:
- 62-S3227
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Element
- Micron:
- 10
- For:
- 320R-RAC-01 - 490R-RAC-01
- Application:
- O/B
$42.49 $32.31
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.