Propeller Shaft Oil Seal for Mercury, Mariner, Force, OMC and MerCruiser Applications – Replaces 26-14077, 26-76868
Propeller Shaft Oil Seal for Mercury, Mariner, Force, OMC and MerCruiser Applications – Replaces 26-14077, 26-76868 is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Propeller Shaft Oil Seal for Mercury, Mariner, Force, OMC and MerCr...
Propeller Shaft Oil Seal for Mercury, Mariner, Force, OMC and MerCruiser Applications – Replaces 26-14077, 26-76868 is backordered and will ship as soon as it is back in stock.
Product Details
This propeller shaft oil seal is a replacement seal for selected Mercury, Mariner, Force, OMC/Johnson/Evinrude and MerCruiser marine applications. It is intended to help retain gear lubricant and limit water intrusion at the propeller shaft. Confirm the exact model, year and serial-number range before ordering.
Reference numbers associated with this seal include Mercury 26-14077, Mercury 26-76868, Mercury 8M0204670, Sierra 18-2077, GLM 85130, Mallory 9-76119, OMC/Johnson/Evinrude 320862 and Force F697555. These references should be verified against the original seal and the applicable service or parts manual.
- Replacement propeller-shaft oil seal for selected marine drivetrains.
- Helps reduce gear-lubricant leakage and water entry at the shaft seal location.
- Designed for internal installation at the propeller shaft or carrier assembly, where specified by the application.
- Aftermarket replacement component; not sold as a genuine OEM part.
Part Number Matrix
The following numbers are reference and interchange leads. Confirm dimensions and application before installation.
| Brand | Part Number | Reference |
|---|---|---|
| Mercury | 26-14077 | Superseded or cross-referenced by 8M0204670 in some listings |
| Mercury | 26-76868 | Reference number |
| Mercury | 8M0204670 | Reference or replacement number for 26-14077 in some listings |
| Sierra | 18-2077 | Aftermarket reference |
| GLM | 85130 | Aftermarket reference |
| Mallory | 9-76119 | Aftermarket reference |
| OMC/Johnson/Evinrude | 320862 | Reference number |
| Force | F697555 | Reference number |
Engine and Model Compatibility
The applications below are reference listings rather than a substitute for an exact serial-number check. Keep the engine model, horsepower, stroke and serial conditions together when confirming fitment.
| Brand | Model or Application | Rated HP | Stroke | Years or Serial Conditions | Reference No. | Notes |
|---|---|---|---|---|---|---|
| Mercury/Mariner | Selected 135–300 HP outboards | 135–300 | 4-Stroke | 2000 and newer listings | 26-14077 / 8M0204670 | Verify the exact model and serial number. |
| Mercury | V-115 DFI, 2.5 L | 115 | 2-Stroke | Serials 0G960500–0T178499 | 26-14077 | Application listing; confirm against the parts diagram. |
| Mercury | V-135 DFI, 2.5 L | 135 | 2-Stroke | Through serial 1B417701+ | 26-14077 | Verify the complete serial range. |
| Mercury | V-150 DFI, 2.5 L | 150 | 2-Stroke | Through serial 1B417702+ | 26-14077 | Verify the complete serial range. |
| Mercury | V-175 DFI, 2.5 L | 175 | 2-Stroke | Through serial 1B417702+ | 26-14077 | Verify the complete serial range. |
| Mercury | 200–225 DFI, 3.0 L | 200–225 | 2-Stroke | Through serial 1B504988 | 26-14077 | Verify the complete serial range. |
| Mercury | 250XS, 3.0 L DFI | 250 | 2-Stroke | Serials 0T651945–1E000796 | 26-14077 | Verify the complete serial range. |
| Mercury | 300X, 3.0 L EFI ProMax | 300 | 2-Stroke | Through serial 0T999587 | 26-14077 | Verify the complete serial range. |
Force Outboard Applications
| Brand | Model or Application | Rated HP | Stroke | Years | Reference No. | Notes |
|---|---|---|---|---|---|---|
| Force | Selected 90 HP outboards | 90 | 2-Stroke | 1989–1994 listings | F697555 | Some listings also associate this reference with Bravo 1 and Bravo 2 drives; verify the exact application. |
MerCruiser Sterndrive Applications
| Brand | Model | Years | Reference No. | Serial or Application Notes |
|---|---|---|---|---|
| MerCruiser | R/MR/Alpha One | 1983–1990 | 26-14077 | Serials 6225577–0F386995 |
| MerCruiser | Alpha One Gen I | 1983–1990 | 26-14077 | Serials 6225577–0F386995 |
| MerCruiser | Alpha One SS | 1986–1989 | 26-14077 | Application listing; verify the parts diagram. |
| MerCruiser | Alpha One Gen II | 1991–1995 | 26-14077 | Serials 0D469859–0F679999 |
| MerCruiser | Alpha One Gen II | 1996–1997 | 26-14077 | Serials 0F680000–0K999999 |
| MerCruiser | Alpha One Gen II | 1998 and newer listings | 26-14077 | Serials 0L100040 and newer; verify the exact unit. |
| MerCruiser | Vazer Drive | Various | 26-14077 | Verify serial number and drive configuration. |
OMC Applications
| Brand | Model or Application | Reference No. | Notes |
|---|---|---|---|
| OMC | Cobra sterndrives | 320862 | Shaft-seal application listing; verify the exact drive. |
| OMC | Stringer drives | 320862 | Shaft-seal application listing; verify the exact drive. |
Technical Specifications
- Product Type
- Propeller shaft oil seal
- Installation
- Internal propeller-shaft or carrier-assembly location, where specified by the application
- Construction
- Rubber and metal composite
- Dimensions
- Outside diameter: 42.9 mm (1.69 in); inside diameter: 28.5 mm (1.12 in); width: 6.1 mm (0.24 in)
- Weight
- Approximately 0.01 kg (0.02 lb)
- Function
- Helps retain gear lubricant and limit water intrusion
- Brand Status
- Aftermarket replacement; not a genuine OEM component
What's in the Box
- 1 x propeller shaft oil seal
This listing is for a single replacement seal. Do not assume that two seals are included or required unless your specific gearcase service manual calls for two.
Installation Notes
- Turn off the engine, remove the ignition key and secure the propeller against movement.
- Remove the propeller and related hardware to access the seal location.
- Remove the old seal carefully without scratching the shaft, carrier or housing.
- Clean the bore and surrounding area of old sealant, lubricant and debris.
- Lubricate the seal lip as specified by the service manual and apply any required installation lubricant to the outer diameter.
- Press the seal in evenly with a suitable seal driver or socket that contacts the correct outer area.
- Install the seal in the same orientation and depth as the original, unless the service manual specifies otherwise.
- Reassemble the components and check for leaks after service.
Troubleshooting and FAQ
How do I know if the propeller shaft seal has failed?
Possible signs include gear lubricant leaking near the propeller, water or milky lubricant in the gearcase during an oil change, or visible cracking, hardening or damage to the seal. Confirm the source of any leak before replacing parts.
Is the seal directional?
Many shaft seals have a defined installation orientation. Install the replacement in the same orientation as the original and follow the applicable service manual. Do not rely on a generic orientation rule if the manual specifies otherwise.
How often should it be replaced?
Inspect the seal during routine gearcase service and replace it if it is damaged, worn or leaking. Replacement is also commonly performed when the gearcase or carrier is disassembled, subject to the service manual.
Can I install it myself?
Installation may be possible for an experienced mechanic with the correct seal-removal and seal-driving tools. Incorrect depth, orientation or damage to the housing can cause immediate leakage, so professional installation is recommended when in doubt.
Does this listing include two seals?
No. This listing is for one replacement seal. Some gearcase designs use more than one seal, but the required quantity depends on the specific model and service procedure.
Is this an OEM part?
No. This is an aftermarket replacement. The reference numbers identify comparable application references and are not a claim that this component was manufactured by Mercury, Mariner, Force, OMC, Johnson, Evinrude or MerCruiser.
What should I verify before ordering?
Compare the original seal's dimensions, reference number, installation position and construction. Then confirm the engine or drive model, horsepower, stroke, year and complete serial-number range against the applicable parts or service manual.
Safety and Important Information
- Verify the original part, dimensions and complete model or serial-number application before purchase.
- Reference-number matches alone do not confirm fitment for every engine or sterndrive.
- Do not operate the vessel if gear-lubricant leakage or water contamination remains after installation.
- Professional installation is recommended for safety and to prevent damage to the seal or gearcase.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable service in real-world applications.
- Global Fulfillment — Shipping options and delivery estimates are shown at checkout according to destination and service availability.
- Manufacturer-Direct Value — Practical replacement solutions with attention to fitment information and product quality.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
