Manifold Gasket – Fits Yamaha/Parsun 15HP (Replaces 66M-13645-00-00)
Manifold Gasket – Fits Yamaha/Parsun 15HP (Replaces 66M-13645-00-00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Manifold Gasket – Fits Yamaha/Parsun 15HP (Replaces 66M-13645-00-00)
Product Details
This high-quality aftermarket Manifold Gasket ensures a reliable seal for the intake manifold on select Yamaha and Parsun outboard motors. It is specifically designed to fit Yamaha 15HP (2-Stroke) and Parsun 8HP, 9.9HP, 13.5HP, and 15HP (2-Stroke) models, restoring performance and preventing leaks.
This part offers a direct interchange for Yamaha 66M-13645-00-00, Parsun F15-07000007, and Mercury/Mercruiser 25-853525/853525.
- Installation: Direct-fit replacement for a secure seal.
- Connection: Seals the intake manifold to the engine block.
- Weight: Approximately 0.01 kg (0.022 lb).
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 66M-13645-00-00 |
| Parsun | F15-07000007 |
| Mercury/Mercruiser | 25-853525/853525 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for specific Yamaha 2-stroke outboards.
Compatible with several Parsun 2-stroke models, including specific Bodensee, 323cc, and international variants.
| Brand | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Yamaha | 15 | 2-Stroke | 66M-13645-00-00 | |
| Parsun | 8 | 2-Stroke | F15-07000007 | Bodensee model |
| Parsun | 9.9 | 2-Stroke | F15-07000007 | 323cc model |
| Parsun | 13.5 | 2-Stroke | F15-07000007 | International model |
| Parsun | 15 | 2-Stroke | F15-07000007 |
Technical Specs
- Product Type
- Manifold Gasket
- Installation
- Direct Replacement
- Fuel Type
- Gasoline
- Connection
- Intake Manifold
- Dimensions
- 10.0 cm L x 11.0 cm W x 0.2 cm H
- Weight
- 0.01 kg (0.022 lb)
What’s in the Box
- 1 x Manifold Gasket (PAF15-07000007/F15-07000007/66M-13645-00-00/25-853525/853525)
Installation Notes
- Ensure the engine is completely cool and disconnect the battery before starting work.
- Relieve any pressure from the fuel system according to the manufacturer's service manual.
- Remove any components obstructing access to the intake manifold.
- Carefully unbolt and remove the manifold from the engine block.
- Remove the old gasket. Thoroughly clean both mating surfaces to remove all old gasket material and debris.
- Position the new gasket correctly onto the engine block.
- Reinstall the intake manifold, ensuring it is properly aligned.
- Tighten the manifold bolts to the manufacturer-specified torque in the correct sequence.
- Reassemble all previously removed components and reconnect the battery.
- Start the engine and carefully check for any vacuum or fluid leaks around the manifold.
Troubleshooting & FAQ
How do I know if this gasket will fit my engine?
This gasket is compatible with specific Yamaha 15HP (2-stroke) and Parsun 8, 9.9, 13.5, and 15HP (2-stroke) models. The most reliable way to confirm fitment is to match your existing part number to one listed in our Part Number Matrix.
What are the signs of a failing manifold gasket?
Common symptoms include a rough or unstable idle, poor engine performance, a hissing sound indicating a vacuum leak near the manifold, and reduced power. A visual inspection may also reveal cracks or deterioration of the old gasket.
Can this gasket be reused?
No. Intake manifold gaskets are designed for a single use. They create a seal by compressing into place, and once removed, they will not provide a reliable seal if reinstalled.
Is any sealant required during installation?
Typically, this type of gasket is installed dry. However, always refer to your engine’s official service manual, as some specific procedures may recommend a light application of a particular sealant.
What is the main cause of manifold gasket failure?
Gaskets can fail over time due to constant exposure to heat, pressure, and engine fluids. Overheating is a primary cause, as it can cause the gasket material to become brittle and crack.
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.
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