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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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GM 4.3L V6 w/Carter In 8 Out 3 Vent 8 Flg# M60315
Item#:
18-7284
Cross Reference#:
41141A2
77011
862077A 1
862077A1
9-35424
Manufacturer Item:
41141A2
Manufacturer:
Sierra
Available:
In Stock
Your Price:
259.69
Each
GM 7.4L 1982-1992 In 9 Out 3 Vent 3 Flg#60601
Item#:
18-7288
Cross Reference#:
77116
812454A1
812454A3
862048A 1
862048A1
9-35426
97399
97399A2
Manufacturer Item:
812454A1
Manufacturer:
Sierra
Available:
In Stock
Your Price:
223.19
Each
Chrysler LM318 M340 M360 w/Log Style 1 Hole
Item#:
17550
Cross Reference#:
17550
Manufacturer Item:
17550
Manufacturer:
Chrysler
Available:
Special Order
Your Price:
54.88
Each
Mercruiser 4.3L 5.0L 5.7L 6.2L w/ Alpha Drive
Item#:
42501
Cross Reference#:
860256A1
860256A3
Manufacturer Item:
860256A3
Manufacturer:
Mercury Marine
Available:
Out of Stock
ETA:
11/05/2026
Your Price:
413.99
Each
Mercruiser 4.3L 5.0L 5.7L 6.2L w/ Bravo Drive
Item#:
42500
Cross Reference#:
18-3530
860256A2
860256A4
9-42500
Manufacturer Item:
860256A4
Manufacturer:
Mercury Marine
Available:
In Stock
Your Price:
421.99
Each
Item#:
R37707
Cross Reference#:
37628
37704
37707
Manufacturer Item:
37707
Manufacturer:
Mercury Marine
Available:
In Stock
Your Price:
75.00
Each
Item#:
27-99757
Cross Reference#:
0778257
0910157
0915025
3853412
778257
8M0215011
99757
Manufacturer:
Barr
Available:
In Stock
Your Price:
15.00
Each
Bravo I II III 1988-Up
Item#:
12708
Cross Reference#:
12708
18-1240
86720
Manufacturer Item:
12708
Manufacturer:
Engineered Marine Parts
Available:
In Stock
Your Price:
11.99
Each
Bravo XR, XZ Sierra
Item#:
18-2469
Cross Reference#:
8M0205246
841026A2
862118A2
Manufacturer Item:
841026A2
Manufacturer:
Sierra
Available:
In Stock
Your Price:
124.49
Each
Volvo For 94444 Pump
Item#:
21608511P
Cross Reference#:
21397771
21545138
21608511
23306461
24333571
3594444
3860210
3861355
Manufacturer Item:
21608511
Manufacturer:
Engineered Marine Parts
Available:
Out of Stock
Your Price:
469.99
Each
Mercruiser 575 Sci
Item#:
R5673-8
Cross Reference#:
59660
813421
8134214
Manufacturer Item:
8134214
Manufacturer:
NGK Spark Plugs
Available:
In Stock
Your Price:
7.12
Each
Fits Mercruiser V6 V8 Sierra w/Center Rise Manifolds
Item#:
13990
Cross Reference#:
806926A1
862210A01
9-41200
Manufacturer Item:
806926A1
Manufacturer:
Sierra
Available:
In Stock
Your Price:
12.39
Each
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