Gasket – Fits Volvo Penta Marine Engines (Replaces 18818)
Gasket – Fits Volvo Penta Marine Engines (Replaces 18818) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket – Fits Volvo Penta Marine Engines (Replaces 18818)
Product Details
This copper crush washer, a direct replacement Gasket – Fits Volvo Penta Marine Engines, provides a secure seal for drain plugs on various Volvo Penta marine engines, including the D70B diesel series. It is designed to prevent oil leaks by creating a tight fit when compressed.
This part is a direct replacement for Volvo Penta part number 18818 and also interchanges with REC18818.
- Engineered for use with oil drain plugs.
- Constructed from high-quality copper for optimal sealing.
- Compatible with both gasoline and diesel engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 18818 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is known to fit certain Volvo Penta diesel engines. A partial list is included below; always verify your specific part number before ordering.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | D70B | Diesel | 18818 | Listed as key #45 in engine schematic |
Technical Specs
- Product Type
- Gasket / Crush Washer
- Installation
- Used with drain plugs
- Fuel Type
- Compatible with both gasoline and diesel engines
- Material
- Copper
- Dimensions
- 0.1" H x 10.1" W x 11.0" L
- Weight
- 0.01 lbs (0.0045 kg)
- Other Technical Attributes
- Used as sealing washer for oil drain plugs
What’s in the Box
- 1 x Gasket (replaces 18818/REC18818)
Installation Notes
- Ensure the engine is off and cool. Position a drain pan under the drain plug.
- Remove the old drain plug and gasket. Clean the plug and the mating surface on the oil pan, removing any old sealant or residue.
- Place the new copper gasket onto the drain plug.
- Reinstall the drain plug with the new gasket, hand-tightening first to avoid cross-threading.
- Torque the drain plug to the manufacturer's recommended specification using a torque wrench. Do not overtighten, as this can damage the gasket or oil pan.
- Refill the engine with the correct type and amount of oil. Start the engine and check for leaks around the drain plug.
Troubleshooting & FAQ
How do I know if this gasket fits my specific Volvo Penta engine?
This gasket is listed as compatible with the Volvo Penta D70B series. The best way to ensure a fit is to match the OEM part number 18818 with the number listed in your engine's service manual or on the old part itself.
What are the signs of a failing drain plug gasket?
The most common sign is a slow oil drip or a visible oil stain on the ground beneath your engine's oil pan. Over time, the gasket can lose its ability to seal, leading to leaks.
When should this gasket be replaced?
It is best practice to replace the drain plug gasket every time you change your engine oil. Most gaskets are single-use crush washers designed to be replaced to ensure a proper seal.
Can I reuse my old copper gasket?
It is not recommended. This is a crush washer, which deforms during initial installation to create a tight seal. Reusing it significantly increases the risk of an oil leak.
What is the difference between an OEM and an aftermarket part?
This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It has been engineered to meet or exceed OEM specifications using comparable high-quality materials and is produced in an ISO 9002 certified facility with strict quality control.
What are your shipping options and costs?
We ship worldwide, with most orders arriving in 5–15 days via standard shipping, which is free. Expedited shipping options and costs are available and will be displayed at checkout where applicable.
What is the warranty and return policy?
Our parts are covered by a 1-year warranty against any manufacturing defects under normal operating conditions. If you encounter a problem, please contact our support team with your order number. We accept returns for unused items in their original packaging within our standard return period; please see our policy page for full details.
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, 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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