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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury Outboard Parts by System
- Complete Powerheads
- Control Cables & Boxes
- Cooling System
- Cowlings & Components
- Electrical System
- Engine Oil
- Engine Rebuild Kits
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service & Oil Change Kits
- Service Manuals
- Steering Systems
- Throttle Components
- Transom & Midsection
- Trim System
- Wizard Performance Parts
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
93102-63004-00
93102-63008-00
MES Trim Motor Reservoir
3-Wire Tilt & Trim Motor with Reservoir for Mercury and MerCruiser
This MES trim motor reservoir assembly is an aftermarket replacement for select Mercury, MerCruiser, Volvo Penta, and early BMW marine tilt and trim systems.
The assembly includes the 12-volt trim motor and reservoir for compatible 3-wire ring-terminal trim pump systems. The pump valve body is not included.
Compatible Applications
| Brand / Application | System Type | Years / Range | Application Notes |
|---|---|---|---|
| MerCruiser Stern Drives | Power Trim & Tilt | Most models through 1984 | For compatible 3-wire motor and reservoir trim pump systems |
| Mercury Outboards | Power Trim & Tilt | Select 1975-1992 applications | Commonly listed for 35-220HP applications using compatible 3-wire / 4-line trim systems |
| Volvo Penta Stern Drives | Power Trim & Tilt | Early compatible models | For compatible early 3-wire ring-terminal trim motor systems |
| BMW Marine Z-Drive | Power Trim & Tilt | Early compatible models | Used on compatible BMW marine stern drive trim systems |
Always verify your original trim motor OEM number, wire configuration, terminal style, pump design, and trim system diagram before ordering.
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| MES | T2975M |
| Replaces Mercury / MerCruiser | 64461A4 |
| Replaces Mercury / MerCruiser | 67914A2 |
| Replaces Mercury / MerCruiser | 76395A2 |
| Replaces Mercury / MerCruiser | 76395A5 |
| Replaces Mercury / MerCruiser | 8317 |
| Replaces Mallory | 9-18210 |
| Replaces Mercury / MerCruiser | 92975A22 |
| Replaces Mercury / MerCruiser | 92975A28 |
| Replaces Mercury / MerCruiser | 92975A32 |
| Replaces Mercury / MerCruiser | 92975A4 |
| Replaces Mercury / MerCruiser | 92975A6 |
| Replaces Mercury / MerCruiser | 97528A3 |
| Common Aftermarket Cross Reference | Sierra 18-6763 |
| Common Aftermarket Cross Reference | ARCO 6217 |
What This Trim Motor Reservoir is Used For
This trim motor reservoir assembly is used on compatible hydraulic power trim systems to drive the trim pump and hold trim system fluid.
The trim motor powers the hydraulic pump that raises and lowers the sterndrive or outboard during trim and tilt operation.
A failed or weak trim motor may cause slow trim movement, intermittent operation, clicking with no pump movement, or complete trim system failure.
Replacing the motor and reservoir assembly can help restore proper trim system operation when the original unit has failed and the pump valve body is still serviceable.
Key Features and Benefits
- MES aftermarket trim motor reservoir assembly
- 12-volt trim motor with reservoir
- 3-wire configuration with ring-terminal connections
- Designed for compatible Mercury, MerCruiser, Volvo Penta, and BMW marine trim systems
- Replaces multiple Mercury and MerCruiser OEM part numbers
- Common replacement for early-style trim pump systems
- Motor and reservoir only; pump valve body is not included
- Aftermarket alternative to OEM trim motor assemblies
Trim Motor Reservoir Details
- Brand: MES
- Part Type: Trim Motor Reservoir Assembly
- MES Part Number: T2975M
- Voltage: 12 Volt
- Connection Type: 3-wire ring-terminal connections
- Includes: Trim motor and reservoir
- Does Not Include: Pump valve body
- Application: Compatible hydraulic power trim and tilt systems
- Quantity Sold: Each
FAQ
What does MES T2975M replace?
MES T2975M replaces multiple Mercury and MerCruiser trim motor and reservoir numbers including 64461A4, 67914A2, 76395A2, 76395A5, 92975A22, 92975A28, 92975A32, 92975A4, 92975A6, and 97528A3.
Does this include the pump valve body?
No. This is the trim motor and reservoir assembly only. The pump valve body is not included.
Is this a 3-wire trim motor?
Yes. This replacement is for compatible 3-wire trim motor systems with ring-terminal connections.
What applications does this fit?
It fits select MerCruiser stern drives, Mercury outboards, Volvo Penta, and early BMW marine trim systems using the matching 3-wire motor and reservoir assembly.
Will this fit all Mercury or MerCruiser trim pumps?
No. Fitment depends on the original OEM part number, wire configuration, terminal style, reservoir design, and pump assembly.
Should I verify my original part number before ordering?
Yes. Always compare your original trim motor part number and trim pump layout before ordering replacement trim motor components.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Electrical trim components should be installed only after confirming correct fitment.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
T2975M, 64461A4, 67914A2, 76395A2, 76395A5, 8317, 9-18210, 92975A22, 92975A28, 92975A32, 92975A4, 92975A6, 97528A3, Sierra 18-6763, ARCO 6217, MES trim motor reservoir, MerCruiser trim motor reservoir, Mercury 3 wire trim motor, MerCruiser power trim motor, trim pump motor with reservoir, tilt trim motor reservoir, Volvo Penta trim motor, BMW marine trim motor
PT440
TRM0005
18-6763
64461A4
67914A2
76395A2
76395A5
8317
9-18210
92975A22
92975A28
92975A32
92975A4
92975A6
97528A3
18-2564
18-2564-1
30090
43033
430331
18-0710
68V-14984-00-00
881325
804156
809086
0352960
0387041
0769405
0777367
18-1347
18-1377
18-1377
22855
320499
352960
387041
5007190
777367
878758
878780
88269
88269T
88270
88270A02
88270A1
883270T
OEM Mercury & Tohatsu Thermostat Gasket
Mercury & Tohatsu 4HP-30HP FourStroke Thermostat Cover Gasket
Genuine OEM thermostat cover gasket used on many Mercury and Tohatsu 4-stroke outboards ranging from 4HP through 30HP. This gasket helps create a proper seal between the thermostat housing and engine components during cooling system service.
Commonly replaced during thermostat maintenance, cooling system repairs, or preventative service on compatible Mercury, Mariner, Nissan, and Tohatsu outboards.
Compatible Mercury Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 4HP / 5HP / 6HP | Mercury FourStroke | Select models and serial ranges |
| 8HP / 9.9HP | Mercury FourStroke | 209cc applications |
| 9.9HP ProKicker | Mercury FourStroke | Select ProKicker applications |
| 15HP / 20HP | Mercury Carbureted & EFI FourStroke | 2-cylinder applications |
| 25HP / 30HP | Mercury EFI FourStroke | 3-cylinder applications including Jet models |
| 15HP SeaPro | Mercury FourStroke | International SeaPro models |
Compatible Tohatsu Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 8HP / 9.8HP | Tohatsu FourStroke | Select MFS models |
| 15HP / 20HP | Tohatsu FourStroke | Select EFI and carbureted models |
| 25HP / 30HP | Tohatsu FourStroke | Select EFI applications |
| Nissan Marine | FourStroke Outboards | Select rebadged Tohatsu applications |
OEM Part Numbers & Cross References
| Brand | Part Numbers |
|---|---|
| Mercury | 8M0214960, 853702, 853702005, 898101194 |
| Tohatsu | 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M |
| Sierra | 18-60920 |
| Mallory | 9-60920 |
What This Thermostat Gasket is Used For
This OEM thermostat cover gasket is used to properly seal the thermostat housing during cooling system operation on compatible Mercury and Tohatsu outboards.
Replacing the gasket during thermostat service helps prevent coolant leaks, improper thermostat sealing, and cooling system pressure loss.
Thermostat gaskets are commonly replaced whenever the thermostat housing is removed for inspection, thermostat replacement, or routine maintenance.
Using the correct OEM gasket helps maintain proper fitment and sealing performance in harsh freshwater and saltwater marine environments.
Key Features and Benefits
- Genuine OEM Mercury and Tohatsu thermostat gasket
- Fits many 4HP-30HP FourStroke outboards
- Helps seal thermostat housing properly
- Supports cooling system reliability
- Common replacement during thermostat service
- Designed for marine cooling system environments
- OEM-quality fit and material construction
- Compatible with multiple Mercury and Tohatsu platforms
Thermostat Gasket Details
- Part Type: Thermostat Cover Gasket
- Primary OEM Number: 8M0214960
- Application: Mercury & Tohatsu FourStroke Outboards
- Horsepower Range: 4HP-30HP
- System: Engine Cooling System
- Use: Thermostat housing sealing
- Material: OEM marine gasket material
FAQ
What does this thermostat gasket fit?
This gasket fits many Mercury and Tohatsu-built 4-stroke outboards
ranging from 4HP through 30HP depending on model and serial range.
Should I replace the gasket when replacing the thermostat?
Yes. It is recommended to replace the thermostat gasket whenever the thermostat housing is removed to help ensure a proper seal.
Is this an OEM Mercury part?
Yes. This is a genuine OEM-style thermostat gasket cross-referenced to Mercury part number 8M0214960 and related superseded numbers.
Does this fit Tohatsu and Nissan outboards?
Yes. Many Mercury small FourStroke outboards are manufactured by Tohatsu, and this gasket also cross references to several Tohatsu and Nissan Marine part numbers.
Can a damaged thermostat gasket cause cooling issues?
Yes. A leaking or damaged gasket can contribute to improper thermostat operation, coolant leakage, or inconsistent engine temperatures.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0214960, 853702, 853702005, 898101194, 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M, thermostat gasket, Mercury thermostat gasket, Tohatsu thermostat gasket, Mercury 25HP thermostat gasket, Mercury 30HP thermostat gasket, Tohatsu thermostat cover gasket, Nissan Marine thermostat gasket, Sierra 18-60920
3H6010320
3H6010320M
346010320
346010320M
350020320
350020320M
5040066
8M0214960
853702
853702005
898101194
21120
35912
445-226
509035
52834
775419
79448
8M0168577
8M2000347
8M2011027
9-72155
9-72155
166041
