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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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Volvo 4cyl AQ
Item#:
18-4029
Cross Reference#:
463377
463377-2
Manufacturer Item:
463377
Manufacturer:
Volvo
Available:
Special Order
Your Price:
51.98
Each
This item is discontinued
OMC King Cobra
Item#:
3852857
Cross Reference#:
0768663
0913825
3852857
Manufacturer Item:
3852857
Manufacturer:
OMC / Bombardier
Available:
In Stock
Your Price:
188.47
Each
Mercruiser 3.7L 4cyl Cyl Head To Exh Man. 1980-1989
Item#:
18-70704
Cross Reference#:
89653
Manufacturer Item:
89653
Manufacturer:
Sierra
Available:
In Stock
Your Price:
22.09
Each
Volvo Aq280DP Aluminum/Salt Water & Brackish
Item#:
DPKITA
Cross Reference#:
23974010
852182
875821
Manufacturer Item:
875821
Manufacturer:
Canada Metal
Available:
In Stock
Your Price:
29.95
Each
Alpha Gen II 1998-Up
Item#:
21522
Cross Reference#:
21522
30894A5
Manufacturer Item:
30894A5
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
156.69
Each
MC I R/MR/Alpha I, Gen II Early Style 1967-1997
Item#:
21520
Cross Reference#:
18-1160
18-1160
35988A12
35988A12
35988A2
35988A2
9-75123
Manufacturer Item:
35988A12
Manufacturer:
Engineered Marine Parts
Available:
In Stock
Your Price:
282.85
Each
OMC 2.3L Cobra
Item#:
18-21755
Manufacturer Item:
984629
Manufacturer:
Sierra
Available:
Out of Stock
ETA:
09/01/2026
Your Price:
237.99
Each
King Cobra, 7.5L/460, 1987-90
Item#:
18-21754
Manufacturer Item:
984537
Manufacturer:
OMC / Bombardier
Available:
Special Order
Your Price:
956.29
Each
Bravo I II III / Volvo SX w/ 2.328" Cup
Item#:
21581
Cross Reference#:
F458250
F458250
F458250
18-1103
181589
3582473
3854249
386768
66668A1
66668A1
769629
8M0103470
986210
99328A1
99328A1
Manufacturer Item:
8M0103470
Manufacturer:
Pro Marine
Available:
In Stock
Your Price:
33.93
Each
MC I R/MR Alpha I w/PreloadPin Mercury V6 Early 1970-1990
Item#:
21570
Cross Reference#:
18-1108
18-1108
500397
509435
509435
53079
53079A1
Manufacturer Item:
53079A1
Manufacturer:
GLM
Available:
Out of Stock
Your Price:
37.14
Each
This item is discontinued
Volvo 4cyl
Item#:
18-5428
Cross Reference#:
240305
243796
243903
71000
9-29205
9-29212
Manufacturer Item:
243903
Manufacturer:
Sierra
Available:
In Stock
Your Price:
19.89
Each
R/MR/Alpha I, Gen II, Bravo 1983-Up
Item#:
32500
Cross Reference#:
18-0388
508613
98823
988231
Manufacturer Item:
988231
Manufacturer:
GLM
Available:
In Stock
Your Price:
2.71
Each
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