Aftermarket Parts
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Seastar Hose Kit-2Pc Seastar O/B 12 Ft Ho5112
Seastar
$201.59 $147.95Seastar Hose Kit-2Pc Seastar O/B 12 Ft Ho5112 Includes 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-HO5112
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 12'
- Box:
- 2
$201.59 $147.95 -
Seastar Union Coupling 3/8 Tee (3/Pk) Hf5527
Seastar
$36.39 $21.58Seastar Union Coupling 3/8 Tee (3/Pk) Hf5527 All Older Style SeaStar manual hydraulic steering systems. These are 3/8" compression fittings which utilize a 9/16"-24 extra fine thread. (Seastar...- Part Number:
- 1-HF5527
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Union Coupling Fitting
- Material:
- Brass
- Bag:
- 3
$36.39 $21.58 -
Sierra 10Oz Power Trim/Tilt Fluid 18-9750-0
Sierra
$10.89Sierra 10Oz Power Trim/Tilt Fluid 18-9750-0Formulated for high operating pressure. Anti-foam additives assure uniform flow with reduced air contamination in hydraulic systems. Designed for heavy duty...- Part Number:
- 47-97500
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 10 oz.
$10.89 -
Sierra C-Tuneup Kit - MerCruiser Tbolt-V8 18-5273
Sierra
$58.39 $43.20Sierra C-Tuneup Kit - MerCruiser Tbolt-V8 18-5273- Part Number:
- 47-5273
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mercury Thunderbolt HEI - V-8
- Replaces:
- 805759T3/805759Q3
$58.39 $43.20 -
Sold Out, please call for ETA.
Sierra Carbon Cleaner 18-9570-0
Sierra
$19.35Sierra Carbon Cleaner 18-9570-0Specially designed to improve engine performance and efficiency. Thoroughly removes gum; varnish and carbon deposits. Cleans intake ports; valves; pistons and...- Part Number:
- 47-95700
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 12 oz. aerosol
$19.35 -
Sierra Filter Bracket-Ss 3/8 Npt 18-7776
Sierra
$101.99 $81.72Sierra Filter Bracket-Ss 3/8 Npt 18-7776Sierra fuel water separators remove over 98.8% of emulsified water from your gasoline. Sierra's 10 micron filters are over 90% efficient at removing particles...- Part Number:
- 47-7776
- Availability:
- In Stock - Ships same or next business day.
- Type:
- 3/8" Stainless Steel
$101.99 $81.72 -
Sierra Filter-Water Separator OMC 10M 18-7946
Sierra
$15.49 $14.87Sierra Filter-Water Separator OMC 10M 18-7946Sierra fuel water separators remove over 98.8% of emulsified water from your gasoline. All filters flow @ 90 GPH to feed even the hungriest motor.Clear...- Part Number:
- 47-7946
- Availability:
- In Stock - Ships same or next business day.
- Type:
- 10 MIcron
- Replaces:
- OMC 502905
$15.49 $14.87 -
Sierra Fuel Filter Suzuki 15410-87J10 18-7716
Sierra
$13.99 $11.99Sierra Fuel Filter Suzuki 15410-87J10 18-7716- Part Number:
- 47-7716
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Suzuki 15410-87J10
- Application:
- Johnson 25 hp - 4-stroke ('04-'05) - 30 hp - 4-stroke ('04-'07) - 40 - 60 - 70 hp - 4-stroke ('03-'04 & '06)
Evinrude 25 - 30 - 40 - 50 - 70 hp - 4-stroke ('00-'01)
$13.99 $11.99 -
Sierra Ignition Coil -Crusader OMC MerCruiser 18-5433
Sierra
$66.19 $56.35Sierra Ignition Coil -Crusader OMC MerCruiser 18-5433- Part Number:
- 47-5433
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- Crusader 37068 - 51080. Mercury 38547 - 32193A2 - 392-806529A1 - 898253T24 - OMC 915735 - Delco 1115202 (uses external resistor). Pleasurecraft R117001 - Volvo 835998
$66.19 $56.35 -
Sierra Ignition Coil Mc817378T 18-5443
Sierra
$136.59 $100.31Sierra Ignition Coil Mc817378T 18-5443- Part Number:
- 47-5443
- Availability:
- In Stock - Ships same or next business day.
$136.59 $100.31 -
Sierra Marine Fuel Pump Electric 18-7326
Sierra
$426.39 $309.99Sierra Fuel Pump Eletric 18-7326- Part Number:
- 47-7326
- Availability:
- In Stock - Ships same or next business day.
$426.39 $309.99 -
Sierra Oil Pan MerCruiser 809910 18-0612
Sierra
$377.89 $272.14Sierra Oil Pan MerCruiser 809910 18-0612- Part Number:
- 47-0612
- Availability:
- In Stock - Ships same or next business day.
$377.89 $272.14 -
Sierra Primer Bulb 5/16In Epa 18-8004Ep-1
Sierra
$38.09 $27.33Sierra Primer Bulb 5/16In Epa 18-8004Ep-1Primer bulbs meet 2011 EPA regulations for low permeation of fuel with the look and feel of the previous bulbs. They offer superior resistance to UV; ozone;...- Part Number:
- 47-8004EP1
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 5/16" ID
- Fits:
- Mercury 89396A38 - 89396Q38 - Johnson/Evinrude 175411
$38.09 $27.33 -
Uflex Neutral Safety Switch X12
Uflex
$70.39 $49.99Uflex Neutral Safety Switch X12 Neutral safety switch (X12-34543 Q) to prevent in-gear starting.- Part Number:
- 216-X12
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Neutral Safety Switch
$70.39 $49.99 -
Sold Out, please call for ETA.
Attwood Marine 90 Deg Fl Tank Vent with Black Cap 1670-1
Attwood Marine
$20.29 $12.41Attwood Marine 90 Deg Fl Tank Vent with Black Cap 1670-1 These vents help prevent water from entering the fuel tank, yet allow air to vent freely, during normal sea conditions and washdowns. This...- Part Number:
- 23-16701
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Black
- Hose:
- 5/8" I.D.
- Max Hull Thickness:
- 9/16"
- Hole:
- 3/4"
- Pkg.:
- Bulk
$20.29 $12.41 -
Attwood Marine Primer Bulb Low-Perm 3/8 93038Lp7
Attwood Marine
$34.24 $20.48Attwood Marine Primer Bulb Low-Perm 3/8 93038Lp7 EPA COMPLIANT/CARB CERTIFIEDMulti layer bulb designed for high performance priming in the harsh marine environment. Multi-layer design prevents...- Part Number:
- 23-93038LP7
- Availability:
- In Stock - Ships same or next business day.
- Hose:
- 3/8" ID
$34.24 $20.48 -
Centek Elbow - 45 Degree 3" 1200109
Centek
$102.99 $77.44Centek Elbow - 45 Degree 3" 1200109These fittings are made of the same fiberglass and fire retardant resins used to make Vernatube. Fittings, couplings and elbows are lightweight, strong,...- Part Number:
- 383-1200109
- Availability:
- In Stock - Ships same or next business day.
- OD:
- 3"
- Length:
- 8-1/2"
$102.99 $77.44 -
Centek Muffler-Vernalift 2X2 Side/Top 1500027
Centek
$439.59 $325.44Centek Muffler-Vernalift 2X2 Side/Top 1500027 Extremely effective in reducing engine exhaust noise and preventing water from returning to the engine. High strength design provides a significant...- Part Number:
- 383-1500027
- Availability:
- In Stock - Ships same or next business day.
- A1:
- 2
- A2:
- 2
- B:
- 2.5
- D:
- 10.04
- E:
- 6.5
- F:
- 2
$439.59 $325.44 -
Jabsco Oil Drain Pump 34060-0130
Jabsco
$136.29 $92.68Jabsco Oil Drain Pump 34060-0130 Marine engine oil drain pump with 3/4" female garden hose fitting on suction connection for OMC, and MerCruiser 3/4" NH threaded dip-stick tube. Includes 2' of 1/2"...- Part Number:
- 6-340600130
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 10-1/4"L x 1-1/4" Dia.
$136.29 $92.68 -
Jabsco Spare Impeller And Shaft 172550003P
Jabsco
$51.99 $31.85Jabsco Spare Impeller And Shaft 172550003P- Part Number:
- 6-172550003P
- Availability:
- In Stock - Ships same or next business day.
- Fig.:
- D
- Type:
- Nitrile
- Blades:
- 6
- Size:
- 1-9/16"
- Shaft:
- 1/4"
$51.99 $31.85
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.