Cylinder Head Gasket – Fits Volvo Penta 2003/2003T Diesel Engines (Replaces 859093, 840405)
Cylinder Head Gasket – Fits Volvo Penta 2003/2003T Diesel Engines (Replaces 859093, 840405) 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
Product Details
This is a high-quality replacement Cylinder Head Gasket designed specifically for Volvo Penta 2003 and 2003T series 3-cylinder diesel engines, which are commonly used in marine applications. It ensures a precise fit and reliable seal to restore engine performance and prevent leaks.
This part is a direct interchange for Volvo Penta part numbers 859093 and 840405, providing a dependable alternative for your engine repair.
- Engineered for direct replacement and easy installation.
- Constructed from durable multi-layer steel/composite materials.
- Designed for use in diesel fuel marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket parts.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 859093 | Primary OEM part number |
| Volvo Penta | 840405 | Alternative/Superseded OEM part number |
Engine & Model Compatibility
Confirm your engine model in the table below.
This gasket is designed for specific Volvo Penta 2003-series diesel engines.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | 2003 | 4-Stroke | 859093/840405 | Diesel engine |
| Volvo Penta | 2003T | 4-Stroke | 859093/840405 | Turbocharged diesel engine |
| Volvo Penta | 2003-SOLAS | 4-Stroke | 859093/840405 | Special Safety of Life at Sea variant |
| Volvo Penta | 2003B-SOLAS | 4-Stroke | 859093/840405 | B-series SOLAS variant |
| Volvo Penta | 2003TB-SOLAS | 4-Stroke | 859093/840405 | Turbocharged B-series SOLAS variant |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Direct Replacement
- Fuel Type
- Diesel
- Housing Material
- Multi-layer Steel/Composite
- Product Dimensions
- 35.5cm L x 20.3cm W x 0.3cm H
What’s in the Box
- 1 x Cylinder Head Gasket (Replaces 859093/840405)
Installation Notes
- Disconnect the battery and drain the engine coolant completely.
- Carefully remove the intake and exhaust manifolds, fuel lines, and any other components obstructing the cylinder head.
- Loosen and remove the cylinder head bolts in the sequence specified by the manufacturer's service manual.
- Lift the cylinder head off the engine block and remove the old gasket.
- Thoroughly clean both the engine block and cylinder head surfaces, ensuring they are free of old gasket material, oil, and debris.
- Position the new gasket correctly on the engine block; do not use any sealant unless explicitly required.
- Carefully lower the cylinder head back into place.
- Install and tighten the head bolts in the correct pattern and to the specified torque settings.
- Reassemble all other components in the reverse order of removal.
- Refill the cooling system, reconnect the battery, and check for leaks after starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket will fit my Volvo Penta engine?
This gasket is specifically for the 2003 and 2003T series engines. Please verify your engine model against the "Engine & Model Compatibility" table. It directly replaces OEM part numbers 859093 and 840405.
What are the signs of a failing cylinder head gasket?
Common symptoms include engine overheating, white smoke from the exhaust (burning coolant), milky or foamy oil (coolant contamination), loss of compression, and poor engine performance. If you notice these signs, inspect your head gasket immediately.
Is this part for both naturally aspirated and turbocharged engines?
Yes, this cylinder head gasket is compatible with both the naturally aspirated Volvo Penta 2003 and the turbocharged 2003T models, including the SOLAS variants.
Should I use sealant or adhesive when installing this gasket?
No. This is a dry-fit gasket. You should not use any RTV silicone, sealant, or adhesive during installation unless your official service manual explicitly instructs you to do so for your specific engine model.
What is the difference between an OEM and an aftermarket part?
This listing is for an aftermarket replacement, not an OEM component. It has been engineered to meet or exceed OEM-level specifications using comparable, high-quality materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure consistent quality and fitment.
How much is shipping and how fast will I get my order?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout where applicable. You will see final costs and delivery estimates before confirming your purchase.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal operating conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our full policy page or contact us for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model is listed as compatible—do not proceed.
- This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.
- Professional installation is strongly recommended for safety, performance, and to prevent engine damage.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with an average transit time of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
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