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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
899185
Mercury Fuel Module Seal
Mercury 75-115 EFI / Verado 135-300 Fuel Pump Seal 880596510
This OEM Mercury seal is used in Mercury fuel supply module applications that use lift pump kit 880596T58. It is the companion seal for Pro Marine lift pump applications 80596-58P and 80596-58.
Seal 880596510 is commonly serviced with the related Mercury isolator 880596509. Always verify your engine model, serial number, and OEM parts diagram before ordering fuel module components.
Compatible Applications
| Engine Family | Application | Fitment Note |
|---|---|---|
| Mercury / Mariner 75-115 EFI 4-stroke | Fuel supply module lift pump seal | Used with 880596T58 lift pump applications. Verify serial number before ordering. |
| Mercury / Mariner Verado 135-300 4-stroke | 4-cylinder and 6-cylinder fuel module service | Related to 880596T58 lift pump service. Confirm model, serial range, and parts diagram. |
| Mercury Verado 200 / 225 / 250 6-cylinder | Fuel supply module seal reference | Verified fitment appears in 6-cylinder Verado fuel supply module listings; confirm exact serial range. |
Important Fitment Note
OEM number 880596510 is a Mercury fuel supply module seal used with the lift pump area, not the complete pump assembly. For best results, match this seal by OEM number, fuel pump number 880596T58, and your Mercury serial-number-specific parts diagram.
OEM & Cross Reference Numbers
| Mercury OEM Number | 880596510 |
|---|---|
| Mercury Prefixed Number | 26-880596510 |
| Part Description | Seal for 80596-58 / fuel supply module lift pump service |
| Related Mercury Isolator | 880596509 |
| Related Lift Pump Kit | 880596T58 |
| Pro Marine Pump Numbers | 80596-58P, 80596-58 |
What This Part is Used For
Seal 880596510 is used in the Mercury fuel supply module at the lift pump service area. When replacing a lift pump or servicing the fuel module, this seal helps support proper sealing around the pump assembly. Inspect the related isolator and surrounding fuel module seals during service.
Related Fuel Pump Parts
Mercury Fuel Pump Isolator
OEM Mercury isolator 880596509 used with this seal in the fuel module lift pump area.
View Isolator 880596509
Pro Marine Fuel Pump Lift
Aftermarket lift pump for Mercury 75-115 4-stroke and Verado 135-300 applications using 880596T58.
View Pump 80596-58P
Pro Marine Fuel Pump Kit with Seals
Pro Marine lift pump kit option for Mercury 75-115 4-stroke and Verado 135-300 4 and 6 cylinder applications.
View Pump Kit 80596-58Key Features and Benefits
- OEM Mercury Marine seal for fuel supply module lift pump service.
- Used with lift pump applications referencing Mercury 880596T58.
- Companion part to Mercury isolator 880596509.
- Supports proper sealing when replacing or servicing the lift pump area.
- Best verified by OEM number, engine serial number, and Mercury parts diagram.
Service Kit Details
| Item Number | 880596510 |
|---|---|
| Manufacturer Item | 880596510 |
| Manufacturer | Mercury Marine |
| Product Type | Fuel module seal |
| Related Fuel Pump Type | Electric fuel module lift pump application |
FAQ
Is 880596510 the lift pump?
No. 880596510 is the seal used with the fuel module lift pump area. The related Mercury lift pump kit number is 880596T58.
Does this seal go with isolator 880596509?
Yes. Seal 880596510 and isolator 880596509 are related fuel module service parts used around the lift pump assembly.
Will this fit every Mercury 75-115 EFI or Verado 135-300?
Not automatically. Fuel module parts vary by model and serial range, so confirm the OEM part number and your engine serial before ordering.
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 fuel pump seal, Mercury fuel supply module seal, Mercury Verado fuel pump seal, Mercury 75 90 115 EFI fuel module seal, Mercury lift pump seal.
Searchable Part Numbers
880596510, 26-880596510, 880596509, 880596T58, 80596-58P, 80596-58
819514A11
819514A6
861260T
Mercury Control Hardware
Mercury Mariner Shift and Tiller Latch 899044
Mercury 899044 is a small retaining or locking latch used in select Mercury and Mariner outboard rigging, shift linkage, tiller, and remote control assemblies.
This latch is commonly found in mechanical shift systems, Big Tiller handle components, and remote control attachment or conversion kits. Exact usage varies by engine model, control setup, and serial number.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury / Mariner | Select mid-range outboards | Shift linkage hardware | Common on 75-150HP and similar models where 899044 is listed |
| Mercury / Mariner | Big Tiller handle systems | Tiller handle latch or retaining hardware | Verify tiller kit and control diagram |
| Mercury / Mariner | Remote control attachment / conversion kits | Control and rigging latch hardware | Used only where OEM part number 899044 is shown |
| Mercury / Mariner | Mechanical shift systems | Retaining or locking latch | Confirm by serial number and control configuration |
Important Fitment Note
This latch is used in several control and rigging assemblies, and fitment depends on the exact engine model, serial number, tiller setup, and remote control configuration. Always confirm compatibility using your OEM parts diagram before ordering.
OEM & Cross Reference Numbers
| Mercury OEM Number | 899044 |
| Description | Latch / retaining latch |
| Known Supersessions | No supersession provided |
What This Part Is Used For
This latch is used as a small retaining or locking component in select Mercury and Mariner control, shift, tiller, and rigging assemblies.
Replace a broken, missing, worn, or corroded latch to restore proper retention and operation of the related linkage, tiller, or control hardware.
Key Features and Benefits
- Mercury OEM latch part number 899044
- Used in select shift linkage and mechanical control assemblies
- Commonly associated with Big Tiller handle and remote control kit hardware
- Small replacement hardware part for rigging and control service
- Helps retain or lock the related linkage or control component in place
FAQ
What is Mercury 899044?
Mercury 899044 is a small latch used in select outboard rigging, control, shift linkage, and tiller assemblies.
Where is this latch used?
It is commonly used in shift linkage assemblies, Big Tiller handle systems, remote control attachment kits, conversion kits, and mechanical shift systems.
Does this fit all Mercury outboards?
No. It is used only on specific Mercury and Mariner assemblies. Verify your model, serial number, and OEM diagram before ordering.
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 latch, Mercury retaining latch, Mariner latch, Mercury shift linkage latch, Mercury Big Tiller latch, Mercury tiller handle latch, Mercury remote control latch, Mercury conversion kit latch, Mercury mechanical shift hardware
Searchable Part Numbers
899044