Engine Basement Gasket – Fits Parsun MFS8/MFS9.9 (Replaces PAF8-00000004)
Engine Basement Gasket – Fits Parsun MFS8/MFS9.9 (Replaces PAF8-00000004) 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
Engine Basement Gasket – Fits Parsun MFS8/MFS9.9 (Replaces PAF8-000...
Product Details
The Sea Sierra Engine Basement Gasket – Fits Parsun MFS8/MFS9.9 (Replaces PAF8-00000004) is a high-quality replacement part designed for Parsun MFS8 and MFS9.9 4-Stroke outboard engines. This thin gasket creates a reliable seal between critical engine components to prevent oil and fluid leakage, ensuring optimal performance.
This part is a direct replacement and cross-references with Bombardier 5041272, Parsun F8-00000004, Tohatsu 3V1-01303-0, Mercury 27-835427003, Sierra 18-60918, and Mercury Marine 8M0229930.
- Engineered for direct-fit installation.
- Made from durable paper/composite material to resist oil and heat.
- Seals the engine basement to prevent leaks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Bombardier | 5041272 |
| Parsun | F8-00000004 |
| Tohatsu | 3V1-01303-0 |
| Mercury / Mercury Marine | 27-835427003 / 835427003 |
| Mercury Marine | 8M0229930 |
| Sierra | 18-60918 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Parsun: Fits specified MFS series 4-stroke engines.
Mercury/Mariner: Fits specific 8 HP and 9.9 HP 4-stroke models with a 209cc displacement.
Tohatsu/Nissan: Cross-references to part number 3V1-01303-0 for various models.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Parsun | MFS8 | 8 | 4-Stroke | F8-00000004 | |
| Parsun | MFS9.9 | 9.9 | 4-Stroke | F8-00000004 | |
| Mercury | 8 HP (209cc) | 8 | 4-Stroke | 27-835427003/835427003 | |
| Mercury | 9.9 HP (209cc) | 9.9 | 4-Stroke | 27-835427003/835427003 | |
| Tohatsu | 3V1-01303-0 | Also listed as 3V1013030, 3V1013030M |
Technical Specs
- Product Type
- Engine Basement Gasket
- Material
- Paper/Composite
- Dimensions
- 16.0 cm × 19.0 cm × 0.3 cm (160 mm × 190 mm × 3 mm)
- Weight
- 0.01 kg (0.02 lb)
- Color
- Gray/Black
- Installation
- Direct replacement
- Warranty
- Manufacturer standard warranty
What’s in the Box
- 1x Engine Basement Gasket (PAF8-00000004)
Installation Notes
- Ensure the engine is cool, and disconnect the battery for safety.
- Drain the engine oil completely to prevent spills.
- Carefully remove the components covering the engine basement to access the old gasket.
- Remove the old gasket. Use a plastic scraper to gently clean any residue from both mating surfaces. Avoid scratching the metal.
- Wipe the surfaces clean with a lint-free cloth and a suitable solvent to remove any oil or debris. Ensure surfaces are completely dry.
- Align the new gasket correctly with the bolt holes and place it onto the surface. No sealant is typically required for this type of gasket, but consult your service manual.
- Reassemble all components, tightening bolts to the manufacturer's specified torque in the correct sequence.
- Refill the engine oil to the proper level.
- Reconnect the battery, start the engine, and carefully check for any leaks around the newly sealed area.
Troubleshooting & FAQ
How do I know if this gasket will fit my engine?
This gasket is designed for Parsun MFS8 & MFS9.9 models and their equivalents from Mercury, Tohatsu, and others. The best confirmation method is to match your old part number to one listed in our Part Number Matrix. Also, visually compare your old gasket to the product images and dimensions provided.
What are the signs of a failing engine basement gasket?
Common signs include visible oil leaks from the seams of the engine block, a gradual drop in engine oil level without visible smoke, and oil contamination in the water around your outboard. In severe cases, it can lead to overheating or loss of performance.
When should this gasket be replaced?
Replace this gasket whenever the engine components it seals are disassembled for service. It should also be replaced immediately if you detect any signs of leakage. Gaskets are single-use parts and should not be reused once compressed.
Is any special sealant required for installation?
Typically, this type of paper/composite gasket is designed to be installed dry. Applying sealant can sometimes interfere with a proper seal. However, always refer to your engine's specific service manual for the manufacturer's recommendation.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
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/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, 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 QC.
Payment & Security
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