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Mercury Outboard Parts
Shop Mercury outboard motor parts by system, including cooling, fuel delivery, electrical, internal engine components, lower unit parts, and routine service items. Browse OEM and replacement Mercury marine parts to support maintenance, repair, and rebuild projects.
Shop 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
Common Mercury Outboard Model References
This category supports many popular Mercury outboards across a wide horsepower range. Always confirm your model and serial number for best fitment.
- Portable & Midrange: 2.5HP–60HP (2-stroke & FourStroke)
- Performance: Pro XS and EFI platforms (75HP–300HP)
- Direct Injection: Optimax models (75HP–250HP)
- Premium Offshore: Verado models (135HP–400HP)
- Commercial: SeaPro models (commonly 75HP–300HP)
Always confirm your exact horsepower, model year, and serial number to ensure proper part compatibility before ordering.
8M0077246
817275A08
F50109
18-2430
20259
28634
28634A1
79953
79953A2
79953Q04
79953Q2
8M0204693
816610A1
816610A2
830749
0769561
0775460
30221
65960
85460
89984
89984B2
89984T4
899842
899844
F8077
F8186
0311598
0777517
12-19183
18-2945
18-2945
19183
19183B
19183K02
19183Q02
191832
191833
20260
20260B
307552
311598
31170
3852105
500383
6508572
777517
8M0187157
9-60101
828816
F50109
18-2244
20259
22420
28634
28634A1
79953
79953A2
79953K04
79953Q04
79953Q2
79953T2
816610A1
816610A2
9-72650
14834A1
18-2375
21731
67892
67892A05
67892A06
67892A1
8M0058389
9-72651
0386482
0777377
0986172
18-1391
18-1391
20464
21840
330854
386482
49313
54215
63326
63326T
777377
9-51105
93306-205U7-00
986172
986172
F85634
F85634-1
F85634-2
F856341
F856342
91012
Mercury Verado Power Steering
Pro Marine Mercury Verado Gen A / Gen B Power Steering Pump 8M0134736P
This Pro Marine replacement pump is built for Mercury Verado Gen A / Gen B power steering pump applications. It replaces the Gen B / A Verado power steering pump and cross references Mercury numbers 8M0134359 and 8M0134736.
This replacement is designed to help customers service an existing Gen A / B system without buying all of the parts required for a Gen C conversion. You must reuse the old case from your current unit. Includes a 1-year warranty.
Compatible Applications
| System | Application | Fitment Note |
|---|---|---|
| Mercury Verado Gen A | Power steering pump replacement | Confirm current pump generation and reuse the existing case. |
| Mercury Verado Gen B | Power steering pump replacement | Direct replacement option for Gen B / A pump service where 8M0134736 is being replaced. |
Important Fitment Note
This Pro Marine replacement pump requires the old case from your current unit. Before ordering, identify whether your boat has a Gen A, Gen B, or Gen C Verado power steering system and compare the current pump number to the cross references below.
OEM & Cross Reference Numbers
| Pro Marine Item Number | 8M0134736P |
|---|---|
| Manufacturer Item | 8M0134736 |
| Cross Reference Numbers | 8M0134359, 8M0134736 |
| Manufacturer | Pro Marine |
| Warranty | 1 year |
Gen B Replacement vs. Gen C Conversion
Converting a Gen A / Gen B Verado steering system to Gen C can require several additional parts. Current conversion items listed on the product page include a pump assembly, adapter hose, power steering harness with fuse, signal wire conversion, and an automatic power source for some multi-engine boats.
| Gen C Conversion Item | Listed Cost |
|---|---|
| Pump Assembly | $1,050.00 |
| Adapter Hose | $217.88 |
| Power Steering Harness with Fuse | $84.24 |
| Signal Wire Conversion | $50.23 |
| Automatic Power Source for twins, triples, or other multi-engine rigs | $268.43 |
Want to compare both paths before ordering? Visit the Gen A / B to Gen C Verado Power Steering Conversion Walkthrough.
Related Verado Steering Parts
Automatic Power Source
Mercury Verado automatic power source used on some multi-engine steering systems and Gen C conversion checks.
View 8M0149746
Signal Drive Harness Assembly
Mercury power steering signal drive harness assembly for Verado steering system service.
View 8M0026568
Helm Power Steering Std 50Cm
Mercury Verado non-tilt power steering helm for Verado hydraulic steering systems.
View 8M0137449
Helm Power Steering With Tilt
Mercury Verado 50cm power steering helm with tilt for Verado steering systems.
View 8M0137451
Damper Hose Kit Gen B
Mercury Verado Gen B power steering damper hose kit for steering hose service.
View 897643A01
Mercury Power Steering Fluid
Mercury full synthetic power steering fluid for Verado steering system service and refill.
View 858077Special Order Hose Numbers
Helm to Power Steering Pump
Special order. Must call to order.
8M0150604 - 2 Foot
8M0150605 - 3 Foot
8M0150606 - 4 Foot
8M0150607 - 5 Foot
8M0150608 - 6 Foot
8M0150610 - 7 Foot
8M0150612 - 8 Foot
8M0150613 - 10 Foot
8M0150614 - 12 Foot
8M0150615 - 14 Foot
8M0150616 - 16 Foot
8M0150617 - 18 Foot
8M0150618 - 20 Foot
8M0150619 - 22 Foot
8M0150620 - 24 Foot
8M0150621 - 26 Foot
8M0150622 - 28 Foot
8M0150623 - 30 Foot
8M0150624 - 32 Foot
Cylinder to Helm
Special order. Must call to order.
8M0167281 - 2 Foot
8M0167282 - 3 Foot
8M0167283 - 4 Foot
8M0167284 - 5 Foot
8M0167285 - 6 Foot
8M0167286 - 7 Foot
8M0167287 - 8 Foot
8M0167288 - 10 Foot
8M0167289 - 12 Foot
8M0167290 - 14 Foot
8M0167291 - 16 Foot
8M0167292 - 18 Foot
8M0167293 - 20 Foot
8M0167294 - 22 Foot
8M0167295 - 24 Foot
8M0167296 - 26 Foot
8M0167297 - 28 Foot
8M0167298 - 30 Foot
8M0167299 - 32 Foot
Key Features and Benefits
- Pro Marine aftermarket replacement for Mercury Verado Gen A / Gen B power steering pumps.
- Cross references Mercury 8M0134359 and 8M0134736.
- Designed to help avoid purchasing every part required for a full Gen C conversion.
- Requires reuse of the old case from the current pump unit.
- Includes 1-year warranty.
- Gen C conversion walkthrough and related steering components are linked for planning a full upgrade.
Product Details
| Item Number | 8M0134736P |
|---|---|
| Product Type | Verado power steering pump replacement |
| Brand | Pro Marine |
| OEM or Aftermarket | Aftermarket |
| Required Reuse Item | Old case from current pump unit |
FAQ
Is this a Gen A / Gen B Verado replacement pump?
Yes. This Pro Marine pump is listed as a Mercury Verado Gen B / A direct replacement and cross references 8M0134359 and 8M0134736.
Do I need to reuse my old pump case?
Yes. This replacement requires the old case from your current unit.
Should I replace this pump or convert to Gen C?
If you want to compare both options, review the Gen A / B to Gen C conversion walkthrough. A Gen C conversion can require multiple added parts, while this pump is intended as a Gen A / B replacement option.
Are some hoses special order?
Yes. Helm-to-pump and cylinder-to-helm hose lengths are listed as special order and must be ordered by calling Pro Marine.
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.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
Mercury Verado power steering pump, Verado Gen B pump, Verado Gen A pump, Pro Marine Verado steering pump, Gen B to Gen C Verado conversion, Verado hydraulic steering pump.
Searchable Part Numbers
8M0134736P, 8M0134736, 8M0134359, 8M0149746, 8M0026568, 8M0137449, 8M0137451, 897643A01, 858077, 858002K01, 858077KC1, 858077K01
8M0134736
OEM Mercury & MerCruiser Oil Drain Plug Seal
Mercury MerCruiser Oil Drain Plug O-Ring 863006
The Mercury MerCruiser 863006 Oil Drain Plug O-Ring is an OEM replacement seal used across a wide range of Mercury outboards, Verado engines, MerCruiser sterndrives, and inboard marine engines.
This O-ring seals the oil drain plug assembly and helps prevent oil leaks during operation and after routine oil service.
Fitment Overview
OEM part number 863006 is used across numerous Mercury and MerCruiser oil drain plug applications. Unlike the drain plug assembly itself, this seal is shared across multiple engine families and marine platforms.
This includes Mercury EFI outboards, Verado engines, V6/V8/V10 outboards, MerCruiser sterndrive engines, and select inboard marine engines.
Compatibility
| Application | Models / Engine Families |
|---|---|
| Mercury EFI 4-Stroke Outboards | 65HP through 150HP EFI models |
| Mercury V6 Outboards | 3.4L V6 175HP and 200HP |
| Mercury V8 Outboards | 4.6L V8 200HP through 300HP |
| Mercury V10 Outboards | 350HP 400HP 425HP models |
| Mercury Racing | 300R 450R 500R Verado applications |
| MerCruiser Sterndrive Engines | Multiple GM-based marine engine platforms |
| MerCruiser Inboard Engines | Select inboard oil drain plug applications |
Always verify fitment using your engine serial number or existing part number before ordering.
Associated Oil Drain Plug Assemblies
In those cases, replacing the complete drain plug assembly is recommended:
View Mercury 8M0112869 Oil Drain Plug Assembly
Part Numbers and Cross References
| Type | Part Number |
|---|---|
| Mercury OEM | 863006 |
| Associated Drain Plug Assembly | 8M0112869 |
| Related Drain Plug Assemblies | 8M0064964, 8M0045813 |
What This O-Ring Is Used For
This O-ring seals the oil drain plug assembly to prevent oil leaks and seepage. Over time, heat cycles, oil exposure, and repeated removal during oil changes can flatten or damage the seal.
- Seals engine oil drain plug assemblies
- Helps prevent oil leaks after service
- OEM Mercury and MerCruiser replacement seal
- Often replaced during routine oil maintenance
Replacing the O-ring during oil service is often the easiest and most affordable way to prevent future leaks.
System Function and Connections
- System Type: Engine lubrication / oil drain system
- Component Type: Oil drain plug O-ring seal
- Associated Components: Oil drain plug assemblies and oil pan drain systems
- Location: Oil drain plug sealing surface
FAQ
What does the 863006 O-ring fit?
It fits many Mercury and MerCruiser oil drain plug applications including EFI outboards,
Verado engines, V6/V8/V10 outboards, and select sterndrive and inboard engines.
Can I replace just the O-ring instead of the entire drain plug assembly?
Yes. If the drain plug assembly itself is still in good condition and only the seal is leaking,
replacing the O-ring is often the simplest repair.
When should I replace the full drain plug assembly?
Replace the entire assembly if the plug is cracked, stripped, damaged,
or leaking around the plug body itself.
What drain plug assembly commonly uses this O-ring?
One common associated assembly is the Mercury
8M0112869 Oil Drain Plug Assembly
.
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 Part Numbers
863006, Mercury oil drain plug o-ring, Mercury oil plug seal, MerCruiser oil drain seal, Mercury Verado oil plug o-ring, Mercury V6 oil seal, Mercury V8 oil drain plug seal, Mercury V10 oil plug seal, 8M0112869, Mercury oil drain plug gasket
858078Q01
862014Q1