Oil Pan Gasket – Fits GM V6 4.3L Marine Engines (Replaces 27-14247T1, 27-142471)
Oil Pan Gasket – Fits GM V6 4.3L Marine Engines (Replaces 27-14247T1, 27-142471) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Pan Gasket – Fits GM V6 4.3L Marine Engines (Replaces 27-14247T...
Product Details
This replacement Oil Pan Gasket is designed for GM 4.3L V6 marine engines from 1996 and newer that utilize a 1-piece rear main seal. It fits a wide range of applications, including models from Mercruiser, Volvo Penta, and OMC/Johnson/Evinrude.
It serves as a direct interchange for Mercruiser 27-14247T1, Volvo Penta 3855801, Sierra 18-61513, and other equivalent part numbers.
- Engineered for direct-fit installation.
- Designed for marine sterndrive and inboard applications.
- Made from durable molded rubber to prevent leaks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercruiser | 27-14247T1 |
| Mercruiser | 27-142471 |
| Mercruiser | 27-883964T |
| Volvo Penta | 21124852 |
| Volvo Penta | 3852655 |
| Volvo Penta | 3855801 |
| Volvo Penta | 856402 |
| OMC/Johnson/Evinrude | 0912955 |
| OMC/Johnson/Evinrude | 3852655 |
| OMC/Johnson/Evinrude | 3855801 |
| Sierra | 18-61513 |
| GLM | 39860 |
| Fel-Pro | 17971 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is confirmed to fit various applications from Mercruiser, Volvo Penta, OMC, and Indmar. Ensure your engine is a 4.3L V6 from 1996 or newer with a 1-piece rear main seal.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercruiser | 262 MAG | Various | 4-Stroke | 1996 & Up | 27-14247T1 | For engines with 1-piece rear main seal |
| Mercruiser | 4.3L/LX/LH/LHX Gen+ | Various | 4-Stroke | 1996 & Up | 27-14247T1 | For aluminum oil pan |
| Mercruiser | All GM V6 | Various | 4-Stroke | 1996 & Up | 27-14247T1 | For engines with 1-piece rear main seal |
| Volvo Penta | 4.3L V6 | Various | 4-Stroke | 1996 & Up | 21124852 | For marine engines |
| OMC | 4.3L V6 | Various | 4-Stroke | 1996 & Up | 0912955 | For marine engines |
| Indmar | 4.3L V6 | Various | 4-Stroke | 1996 & Up | Marine Power Engines |
Technical Specs
- Product Type
- Oil Pan Gasket
- Material
- Molded Rubber (PermaDry)
- Design
- One-piece
- Installation
- Direct Replacement
- Fuel Type
- Gasoline
- Applications
- Marine Inboard/Sterndrive
- Fits
- Stamped tin oil pans with 1-piece rear main seal
- Product Dimensions
- 19.0" L x 3.0" W x 22.0" H
- Weight
- 0.12 kg (0.26 lbs)
What’s in the Box
- 1 x Oil Pan Gasket
Installation Notes
- Disconnect the battery and ensure the engine is cool.
- Safely raise the engine or remove components as needed to access the oil pan.
- Drain the engine oil completely and unbolt the oil pan.
- Gently remove the old gasket and clean both the engine block and oil pan surfaces thoroughly.
- Position the new one-piece gasket correctly on the oil pan.
- Reinstall the oil pan, tightening the bolts to the manufacturer's specified torque sequence and values.
- Lower the engine, refill with new oil, and reconnect the battery.
- Start the engine and check carefully for any leaks around the oil pan seal.
Troubleshooting & FAQ
How do I know if this gasket fits my specific engine model?
This gasket is for GM 4.3L V6 marine engines (1996 and newer) with a 1-piece rear main seal. Verify your model in the compatibility table and cross-reference the OEM part number.
What are the signs of a failing oil pan gasket?
Common signs include visible oil leaks under the engine, a low engine oil level warning, or the smell of burning oil. Inspect the seal between the oil pan and the engine block for wetness or drips.
Is any sealant required with this gasket?
No. This one-piece molded rubber gasket is designed to be installed dry. Applying sealant can interfere with its ability to seal properly.
Can I reuse my old oil pan bolts?
It is generally acceptable to reuse the original bolts if they are in good condition. However, always inspect them for corrosion or thread damage and replace if necessary. Ensure they are torqued to the correct specification.
Why is the 1996+ year range important?
In 1996, GM changed the design of the 4.3L V6 to use a 1-piece rear main seal and a corresponding one-piece oil pan gasket. Engines made before this year used a two-piece design and require a different gasket.
What is the difference between an OEM and an aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and batch-inspected for consistency.
What are your shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, with expedited options appearing at checkout where available.
What is your warranty and returns policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.
Payment & Security
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