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Inboard Marine Engine & Drive Parts For Mercruiser, Volvo, OMC, PCM

Shop inboard and sterndrive marine parts for maintenance, troubleshooting, repair, and full engine rebuild projects. This category includes OEM parts and quality OEM specification aftermarket products from Pro Marine for Mercruiser, Volvo, OMC, Crusader, Pleasurecraft, Indmar, and Chrysler marine engine applications.

Browse marine engine parts by brand and engine system, including cooling systems, ignition and electrical components, fuel delivery parts, exhaust components, internal engine parts, sterndrive and lower drive components, gaskets, seals, steering components, service kits, oil change kits, and rebuild parts.

 

Shop Inboard Categories

 

Common Inboard and Sterndrive Parts Found in This Category

  • Water pumps, impellers, thermostats, manifolds, and cooling system parts
  • Fuel pumps, carburetor kits, injectors, filters, and fuel delivery components
  • Ignition coils, distributors, sensors, alternators, starters, and electrical parts
  • Pistons, bearings, crankshafts, gaskets, seals, and engine rebuild components
  • Bellows, gimbal bearings, shift cables, trim parts, and sterndrive components
  • Exhaust manifolds, risers, couplers, and marine exhaust parts
  • Oil change kits, filters, spark plugs, lubricants, and routine service items
 

Common Inboard and Sterndrive Problems and Where to Start

  • Overheating: inspect impellers, water pumps, thermostats, manifolds, and cooling passages.
  • Hard starting or rough idle: check ignition components, carburetor parts, fuel delivery systems, and sensors.
  • Water intrusion into the drive: inspect bellows, seals, gimbal bearings, and sterndrive housing components.
  • Loss of power or engine noise: inspect compression, bearings, gaskets, pistons, and internal engine components.
  • Drive vibration or shifting issues: inspect couplers, shift cables, u-joints, gears, and lower drive components.
 

Frequently Asked Questions

What is the difference between OEM and aftermarket marine parts?

OEM parts are produced by the original engine manufacturer. Aftermarket parts are replacement parts produced by other manufacturers to fit the same application. Pro Marine provides quality OEM specification aftermarket products for marine maintenance, repair, and rebuild applications.

How do I find the correct inboard or sterndrive parts?

Use your engine model number, serial number, drive model, and horsepower information to confirm fitment. Sterndrive applications may also require the drive serial number for accurate parts matching.

What brands are included in this category?

This category includes Mercruiser, Volvo, OMC, Crusader, Pleasurecraft, Indmar, and Chrysler marine engine applications.

What are common signs my sterndrive needs service?

Common warning signs include overheating, water in gear lube, vibration, difficult shifting, drive noise, poor acceleration, bellows leaks, and excessive corrosion.

Are aftermarket sterndrive and inboard parts reliable?

Yes. Quality aftermarket marine parts are commonly used by marine mechanics and rebuilders. Pro Marine offers OEM specification aftermarket products for many marine engine and sterndrive repair applications.

 

Tip: Before ordering sterndrive or inboard parts, verify the engine model, serial number, and drive model information whenever possible.

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OMC Stringer Lower Driveshaft 1980-1985
Item#:
18-1099
Manufacturer Item:
982422
Manufacturer:
Sierra
Available:
Out of Stock
Your Price:
88.99
Each
This item is discontinued
Fits Mercruiser 5.0, 5.7, 4.3, 6.2
Item#:
18-15100
Cross Reference#:
862087
862087A1
8638763
865615Q03
865615003
Manufacturer Item:
865615Q03
Manufacturer:
Sierra
Available:
In Stock
Your Price:
161.09
Each
Mercruiser 496 Mag 2000 & Up
Item#:
18-15119
Cross Reference#:
8623523
8638461
8638761
865615Q01
865615001
Manufacturer Item:
57-863876 1
Manufacturer:
Sierra
Available:
Out of Stock
Your Price:
76.99
Each
This item is discontinued
Mercruiser 5.7L 6.2L 87.5" Long 2001 - 2006
Item#:
18-15121
Cross Reference#:
8638765
865423005
865615Q05
865615005
Manufacturer Item:
865615Q05
Manufacturer:
Sierra
Available:
In Stock
Your Price:
121.29
Each
OMC/Volvo SX w/O-Ring Connection
Item#:
3852165
Cross Reference#:
0321117
0777895
18-7141
321117
321117
3852165
777895
802047
Manufacturer:
Volvo
Available:
In Stock
Your Price:
2.10
Piece
Mercrusier IL4 V6 V8 w/61Amp V Pulley 2 Wire
Item#:
3186M
Cross Reference#:
12449
12449A1
8M6007462
8M6007494
817119A1
817119A4
92497
92497A3
98555A1
Manufacturer Item:
78403A2
Manufacturer:
MES Marine
Available:
In Stock
Your Price:
210.80
Each
MC I R/MR/Alpha I Gen II w/1.939" Dia. Cup 1983-1995
Item#:
18-1165
Cross Reference#:
0775503
21510
61100A1
9-75117
Manufacturer Item:
61100A1
Manufacturer:
Sierra
Available:
In Stock
Your Price:
55.59
Each
Alpha Gen II Cup Dia. 2.25" 1998 & Up
Item#:
18-1193
Cross Reference#:
33138A1
9-75125
Manufacturer Item:
33138A1
Manufacturer:
Sierra
Available:
In Stock
Your Price:
32.69
Each
MC I R/MR/Alpha I Gen II w/ V-8 & 3.0"Dia Cup 1983-Up
Item#:
1142P
Cross Reference#:
0775504
18-1142
21560
32573A1
Manufacturer Item:
32573A1
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
50.99
Each
MC I R/MR/Alpha I , Gen II w/1.78" Dia. Cup 1967-Up
Item#:
18-1179
Cross Reference#:
21511
32575A1
32575T1
385175
9-75106
Manufacturer Item:
32575T1
Manufacturer:
Mercruiser
Available:
Out of Stock
ETA:
06/25/2026
Your Price:
17.89
Each
Item#:
21277185
Cross Reference#:
21277185
3841482
3860419
3886847
Manufacturer Item:
21277185
Manufacturer:
Volvo
Available:
Out of Stock
ETA:
06/12/2026
Your Price:
123.00
Each
Alpha I Gen II W/O Dipstick 1991-Up
Item#:
18-2382
Cross Reference#:
18312A3
828692A1
9-78120
Manufacturer Item:
828692A1
Manufacturer:
Sierra
Available:
In Stock
Your Price:
284.29
Each
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