Aftermarket Parts
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Sold Out, please call for ETA.
Seastar Seal Kit F/Hc5313-Old #Hs0773 Hs5155
Seastar
$82.89 $64.99Seastar Seal Kit F/Hc5313-Old #Hs0773 Hs5155- Part Number:
- 1-HS5155
- Availability:
- In Stock - Ships same or next business day.
$82.89 $64.99 -
Seastar Twin Mt3 Top Mount Dual Func Lev Ch5300P
Seastar
$881.59 $609.99Seastar Twin Mt3 Top Mount Dual Func Lev Ch5300P Combines classic binnacle styling with dual function levers, a neutral safety switch, and an engine warm-up feature. Now features longer shift travel for certain MerCruisers or longer runs with many bends...- Part Number:
- 1-CH5300P
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Twin Control - Dual Function
$881.59 $609.99 -
Special Order! See availaility for details
Sherwood Pump Raw Water Pump Cummins Qsb P2708X
Sherwood Pump
$1,174.09 $816.51Sherwood Pump Pump-Cummins Qsb P2708X Impeller Kit: 27000K Minor Repair Kit: 25125 Major Repair Kit: 25126 Sold w/o port elbows- Part Number:
- 762-P2708X
- Availability:
- In Stock - Ships same or next business day.
- Engine:
- Cummins QSB
- Replaces:
- P2701X
$1,174.09 $816.51 -
Sierra Amega Tachometer 7Krpm-Gas Ob-Io-Ib 58255P
Sierra
$148.39 $94.99Sierra Amega Tachometer 7Krpm-Gas Ob-Io-Ib 58255PSmart white and red graphics on a black dial background; these very low profile bezels follow the curve of the lenses to eliminate water trapping. Design with domed glass sheds water and resists scratching...- Part Number:
- 11-58255P
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Type:
- Tachometer
- Dial Range:
- 0-7000 rpm
- Sender Code:
- O/B Alt or Coil
$148.39 $94.99 -
Sierra Braided Fuel Line 18-8114
Sierra
$101.29 $69.99Sierra Braided Fuel Line 18-8114- Part Number:
- 47-8114
- Availability:
- In Stock - Ships same or next business day.
$101.29 $69.99 -
Sierra C-Tuneup Kit - MerCruiser Tbolt-V8 18-5273
Sierra
$54.39 $43.99Sierra 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
$54.39 $43.99 -
Sierra Hose Barb 3/8 X 3/8 Male 18-8108
Sierra
$8.09 $6.46Sierra Hose Barb 3/8 X 3/8 Male 18-8108NOT TO BE USED IN POTABLE WATER SYSTEMS.- Part Number:
- 47-8108
- Availability:
- In Stock - Ships same or next business day.
- Connector:
- Hose Barb - Male
- Replaces:
- -
- Thread:
- 3/8" NPT
- Hose:
- 3/8" Barb
$8.09 $6.46 -
Sierra Ignition Coil -Crusader OMC MerCruiser 18-5433
Sierra
$63.59 $53.99Sierra 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
$63.59 $53.99 -
Sierra Impeller-Pcm I/O-Mc47-89984T 4 18-3017
Sierra
$30.39 $21.99Sierra Impeller-Pcm I/O-Mc47-89984T 4 18-3017- Part Number:
- 47-3017
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- All #1 - R - MR - Alpha Units thru S/N D494568
- Replaces:
- 47-89984 - 47-89984T4 - 47-30221 - 47-65960
$30.39 $21.99 -
Sierra Marine Fuel Pump Electric 18-7326
Sierra
$401.89 $289.99Sierra Fuel Pump Eletric 18-7326- Part Number:
- 47-7326
- Availability:
- In Stock - Ships same or next business day.
$401.89 $289.99 -
Sierra Marine Tach-Hour Small Engine Tachometer / Hourmeter with Sensor Wire for 2/4 Stroke 2 Cylinders, 5' 56969P
Sierra
$63.89 $52.99Sierra Tach-Hour Small Engine 56969PFor any gasoline motor up to 2 cylinder. Displays RPM up to 9000. Allows hour monitoring for even the smallest outboard motors. Great for 2 or 4 stroke. Displays RPM when running total hours when off.No power or ground...- Part Number:
- 47-56969P
- Availability:
- In Stock - Ships same or next business day.
$63.89 $52.99 -
Sierra MerCruiser W/P Kit 46-96148Q 8 18-3517
Sierra
$58.49 $40.18Sierra MerCruiser W/P Kit 46-96148Q 8 18-3517- Part Number:
- 47-3517
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- 46-60367A1 - 46-96148A5 - 46-96148A8
$58.49 $40.18 -
Sierra Oil 25W40 FCW I/O-I/B
Sierra
$14.79 $13.99Sierra Oil-25W40 FCW I/O-I/B Qt 18-9400-2- Part Number:
- NW-SPB25W40
- Availability:
- In Stock - Ships same or next business day.
- Grade:
- 25W40
$14.79 $13.99 -
Sierra Outdrive Seal MerCruiser 12708 18-1240
Sierra
$16.59 $13.99Sierra Outdrive Seal MerCruiser 12708 18-1240- Part Number:
- 47-1240
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Mercruiser: For Bravo. Replaces 12708.
$16.59 $13.99 -
Sierra Overhaul Kit-Velvetdrive 71-72 18-2591
Sierra
$532.29 $364.99Sierra Overhaul Kit-Velvetdrive 71-72 18-2591Service kit for Borg-Warner Velvet Drive 71 and 72 series transmission.- Part Number:
- 47-2591
- Availability:
- In Stock - Ships same or next business day.
- Includes:
- Gaskets - Seals - Sealing rings - Bronze and Steel plates
$532.29 $364.99 -
Sierra Pan Gasket 1Pc GM 3L 18-1239
Sierra
$145.59 $119.99Sierra Pan Gasket 1Pc GM 3L 18-1239- Part Number:
- 47-1239
- Availability:
- In Stock - Ships same or next business day.
$145.59 $119.99 -
Sierra Rotor Del-Voy V8 Mc808484--1 18-5405
Sierra
$21.59 $16.99Sierra Rotor Del-Voy V8 Mc808484--1 18-5405- Part Number:
- 47-5405
- Availability:
- In Stock - Ships same or next business day.
$21.59 $16.99 -
Sierra U-Joint Assembly MerCruiser #864244A 2 18-6401
Sierra
$824.69 $589.99Sierra U-Joint Assembly MerCruiser #864244A 2 18-6401- Part Number:
- 47-6401
- Availability:
- In Stock - Ships same or next business day.
$824.69 $589.99 -
Sierra Volvo/OMC Sx Transom Seal Kit 18-2772-1
Sierra
$258.89 $189.99Sierra Volvo/OMC Sx Transom Seal Kit 18-2772-1- Part Number:
- 47-27721
- Availability:
- In Stock - Ships same or next business day.
- Contains:
- Gimbal Bearing 2100 -
Bellows 2765 & 1074 - Seal 2996 - Hose Clamp - Application:
- OMC Sterndrive/Cobra
& Volvo SX cobra drives w/cone clutch
$258.89 $189.99 -
Sierra Vst Kit-Yam F150-Lf150 2004-12 18-79950
Sierra
$146.29 $114.99Sierra Vst Kit-Yam F150-Lf150 2004-12 18-79950- Part Number:
- 47-79950
- Availability:
- In Stock - Ships same or next business day.
- Application:
- F150(04-12) - LF150(04-12)
- OEM #:
- 63P-13915-00 -
69J-24501-10 -
63P-14984-00
$146.29 $114.99
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.