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Mercury / MerCruiser Oil Change Service
Mercury / MerCruiser Oil Drain Hose Kit 865277A02
The 865277A02 Oil Drain Hose Kit is a Mercury / MerCruiser replacement oil drain hose kit used to make oil changes easier on many GM-based MerCruiser engines. This kit attaches at the oil pan drain location and allows the hose to be routed for easier draining in tight engine compartments.
This kit supersedes older Mercury part number 863142A3 and is commonly used on 1983 and newer MerCruiser GM 4-cylinder, V6, and V8 engines. Always verify by engine model, serial number, and existing drain setup before ordering.
Compatible Applications
| Brand | Engine Model | Displacement | Serial Range |
|---|---|---|---|
| MerCruiser | MCM 2.5L | 153 CID | 6229718 and newer |
| MerCruiser | MCM 3.0L | 181 CID | 6229718 and newer |
| MerCruiser | MCM 3.75L | 229 CID | Select ranges including 6330183-6919655 |
| MerCruiser | MCM 4.3L | 262 CID V6 | 0A331455-0F802999 |
| MerCruiser | MCM 5.0L | 305 CID V8 | 6218462-0F600999 |
| MerCruiser | MCM 5.7L | 350 CID V8 | 6218462-0F600999 |
| MerCruiser | MCM 7.4L | 454 CID V8 | 6083145-0F800699 |
| MerCruiser | MCM 8.2L | 502 CID V8 | 0C878221-0F802599 |
Important Fitment Note
This oil drain hose kit fits many GM-based MerCruiser engines, but oil pan style, drain location, and engine configuration can vary. Confirm fitment using your engine serial number and compare your existing oil drain setup before ordering.
OEM & Cross Reference Numbers
| Mercury / MerCruiser Part | 865277A02 |
|---|---|
| Supersedes | 863142A3 |
| Product Type | Oil drain hose kit |
| Common Thread | SAE 1/2"-20 connection |
What This Part Is Used For
This oil drain hose kit is used to make engine oil changes easier on MerCruiser inboard and sterndrive engines. Instead of trying to remove the drain plug in a tight bilge area, the hose can be routed to a more accessible location for draining.
It is especially useful on engines where access to the oil pan drain plug is limited. Replacing a damaged, missing, or aged drain hose helps keep oil changes cleaner and more convenient.
Key Features and Benefits
- Mercury / MerCruiser oil drain hose kit for easier oil changes.
- Current replacement part number 865277A02.
- Supersedes older Mercury part number 863142A3.
- Used on many GM-based MerCruiser 4-cylinder, V6, and V8 engines.
- Helps route oil drainage to a more accessible location.
- Commonly used on Alpha, Bravo, and inboard applications where specified.
FAQ
What is 865277A02?
865277A02 is a Mercury / MerCruiser oil drain hose kit used to simplify oil changes on many GM-based MerCruiser engines.
Does 865277A02 replace 863142A3?
Yes. 865277A02 is the current superseding part number for older Mercury oil drain hose kit 863142A3.
What engines does this oil drain hose kit fit?
It fits many MerCruiser GM-based 2.5L, 3.0L, 3.75L, 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L engines. Always confirm by serial number.
Why install an oil drain hose kit?
It makes oil changes cleaner and easier by allowing oil to drain through a hose instead of removing the drain plug in a tight engine compartment.
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
MerCruiser oil drain hose kit, Mercury oil drain hose, MCM oil drain hose, MerCruiser 4.3 oil drain hose, MerCruiser 5.7 oil drain hose, GM marine oil drain kit.
Searchable Part Numbers
865277A02, 863142A3
865277A02
18-3195
Mercury Cooling and Exhaust Hardware
Mercury V6 V8 Driveshaft Housing Fitting 8M0142714
Mercury 8M0142714 is a small plumbing fitting used on select newer Mercury V6 and V8 4-stroke outboards. It is commonly found in driveshaft housing, cooling, water, or exhaust-related hose and passage assemblies.
This fitting is used on select 3.4L V6 and 4.6L V8 Mercury outboards, including Pro XS, SeaPro, Verado, and Racing applications where OEM part number 8M0142714 is listed. Always verify by serial number and OEM diagram before ordering.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury | 3.4L V6 175-225HP | Driveshaft housing, cooling, or exhaust plumbing | Includes select standard and SeaPro models |
| Mercury | 4.6L V8 200-300HP | Water, cooling, or exhaust line fitting | Includes select Pro XS, SeaPro, and Verado applications |
| Mercury Racing | Select V8 high-performance outboards | Driveshaft housing plumbing fitting | Used where OEM number 8M0142714 is specified |
| Mercury / Verado | Newer V6 and V8 4-stroke platforms | Cooling and exhaust system fitting | Commonly associated with serial ranges around 2B529482 and later |
Important Fitment Note
Small fittings can vary by engine family, serial number, driveshaft housing, hose routing, and cooling system layout. Always confirm compatibility using your engine serial number, model, and OEM parts diagram before ordering.
OEM & Cross Reference Numbers
| Mercury OEM Number | 8M0142714 |
| Description | Fitting / plumbing connector fitting |
| Known Supersessions | No supersession provided |
What This Part Is Used For
This fitting connects or routes water, cooling, or exhaust-related lines through the driveshaft housing area on select Mercury V6 and V8 outboards. It helps maintain proper flow through the system where the OEM diagram calls for this part.
Replace cracked, corroded, blocked, leaking, or damaged fittings during cooling system service, driveshaft housing repair, or hose replacement to help prevent leaks and maintain proper water flow.
Key Features and Benefits
- Mercury OEM fitting part number 8M0142714
- Used on select 3.4L V6 and 4.6L V8 outboard platforms
- Commonly found in driveshaft housing, cooling, and exhaust plumbing assemblies
- Fits select Pro XS, SeaPro, Verado, and Mercury Racing applications where specified
- Small but important replacement part for cooling system and midsection service
- Direct replacement when OEM number 8M0142714 is shown in the parts diagram
FAQ
What is Mercury 8M0142714?
Mercury 8M0142714 is a fitting used in select cooling, exhaust, and driveshaft housing plumbing assemblies.
What engines does this fitting fit?
It is used on select newer Mercury 3.4L V6 and 4.6L V8 outboards, including some Pro XS, SeaPro, Verado, and Racing applications.
Where is this fitting used?
It is commonly associated with the driveshaft housing area and may be used for water, cooling, or exhaust-related hose connections depending on the model.
Should I verify by serial number?
Yes. Hose routing and small fittings can vary by engine serial number and configuration, so serial number verification is recommended 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 fitting, Mercury V6 fitting, Mercury V8 fitting, Mercury driveshaft housing fitting, Mercury cooling fitting, Mercury exhaust fitting, Mercury water fitting, Mercury Pro XS fitting, Mercury SeaPro fitting, Verado fitting, Mercury Racing fitting
Searchable Part Numbers
8M0142714
Mercury Lower Unit Components
Mercury V6 V8 Racing Verado Propeller Shaft 8M012764
Mercury 8M012764 is a propeller shaft used in select larger Mercury gearcase applications, including high-performance V6 and V8 Racing outboards and Verado L6 models equipped with the 5.44 inch gearcase.
This shaft replaces earlier Mercury numbers 8M0103300, 8M0073667, and 8M0053111. These supersessions represent updated versions of the same physical propeller shaft, but exact fitment should always be verified by engine serial number, gearcase size, and lower unit configuration.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury Racing | V6 / V8 250-300R 4.6L outboards | Lower unit propeller shaft | Verify by serial number, gearcase, and prop shaft configuration |
| Mercury Verado | Inline-6 Verado with 5.44 inch gearcase | Heavy-duty lower unit propeller shaft | Confirm gearcase size and serial number before ordering |
Important Fitment Note
Propeller shaft fitment depends on the exact gearcase, gear ratio, shaft length, spline configuration, and engine serial number. Always confirm compatibility using your OEM lower unit diagram before ordering.
OEM & Cross Reference Numbers
| Current Mercury Number | 8M012764 |
| Superseded Mercury Numbers | 8M0103300, 8M0073667, 8M0053111 |
| Description | Propeller Shaft |
What This Part Is Used For
The propeller shaft transfers power from the lower unit gear set to the propeller. It supports the propeller hub and must run true to maintain smooth power delivery through the gearcase.
Replacement may be needed when the shaft is bent, worn, damaged at the splines, or being serviced during a lower unit rebuild. High-performance and larger gearcase applications require the correct shaft to match the torque load and gearcase design.
Key Features and Benefits
- Propeller shaft for select Mercury Racing and Verado lower units
- Fits select V6 / V8 250-300R 4.6L high-performance outboard applications
- Used on select Verado Inline-4 and Inline-6 models with 5.44 inch gearcases
- Replaces Mercury 8M0103300, 8M0073667, and 8M0053111
- Designed for larger gearcase applications where strength and correct fitment are critical
FAQ
What is Mercury 8M012764?
Mercury 8M012764 is a propeller shaft for select Mercury Racing, Verado, and larger 5.44 inch gearcase applications.
Which part numbers does it replace?
It replaces Mercury 8M0103300, 8M0073667, and 8M0053111.
Does this fit all Mercury 250-300HP outboards?
No. This shaft is for specific V6 / V8 Racing and Verado 5.44 inch gearcase applications. Verify by serial number and lower unit diagram.
Why should I verify the serial number?
Gearcase parts can vary by gear ratio, prop shaft size, shaft length, and model configuration, even within the same horsepower family.
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 propeller shaft, Mercury Racing prop shaft, Mercury 300R prop shaft, Mercury 250R prop shaft, Verado propeller shaft, Mercury 5.44 gearcase prop shaft, Mercury V8 lower unit shaft, Mercury V6 Racing gearcase shaft, Mercury lower unit prop shaft
Searchable Part Numbers
8M012764, 8M0103300, 8M0073667, 8M0053111
8M0073667
8M0103300
8M0142764