Volvo Penta Cylinder Head Gasket – Fits AD30A, AQAD30A, MD30A, TAMD30A, TMD30A Series (Replaces 859150)
Volvo Penta Cylinder Head Gasket – Fits AD30A, AQAD30A, MD30A, TAMD30A, TMD30A Series (Replaces 859150) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Volvo Penta Cylinder Head Gasket – Fits AD30A, AQAD30A, MD30A, TAMD...
Product Details
This is a high-quality aftermarket Volvo Penta Cylinder Head Gasket designed for 30 Series marine diesel engines. It ensures a precise fit and reliable seal for models including the AD30A, AQAD30A, MD30A, TAMD30A, and TMD30A.
It serves as a direct replacement for Volvo Penta part numbers 859150 and 1544109.
- Installation Method: Direct replacement
- Engine Environment: Marine diesel
- Material: High-grade composite and metal construction
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 859150 |
| Volvo Penta | 1544109 |
Engine & Model Compatibility
Confirm your engine model in the table below.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | AD30A | 4-Stroke | 859150 |
| Volvo Penta | AQAD30A | 4-Stroke | 859150 |
| Volvo Penta | MD30A | 4-Stroke | 859150 |
| Volvo Penta | TAMD30A | 4-Stroke | 859150 |
| Volvo Penta | TMD30A | 4-Stroke | 859150 |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Housing Material
- Composite/Metal
- Dimensions
- 50.0cm L x 19.0cm W x 0.2cm H
- Fitment
- For Volvo Penta 30 Series marine diesel engines
What’s in the Box
- 1 x Cylinder Head Gasket (Replaces 859150/1544109)
Installation Notes
- Disconnect the battery and completely drain the engine's cooling system.
- Remove the intake/exhaust manifolds and any other components obstructing access to the cylinder head.
- Following the manufacturer's specified pattern, loosen and remove the cylinder head bolts.
- Carefully lift the cylinder head from the engine block. Avoid using pry tools that could damage the mating surfaces.
- Thoroughly clean both the cylinder head and engine block surfaces. Ensure they are free of old gasket material, oil, and debris.
- Position the new cylinder head gasket correctly on the engine block, checking for proper alignment with dowels.
- Carefully place the cylinder head back onto the block.
- Install new or verified-to-spec head bolts. Tighten them in the correct sequence and to the precise torque values specified in your engine's service manual.
- Reassemble all previously removed components.
- Refill the cooling system, check all fluid levels, and start the engine to check for any leaks.
Troubleshooting & FAQ
Which Volvo Penta engines does this gasket fit?
This cylinder head gasket is designed for Volvo Penta 30 Series engines, including models AD30A, AQAD30A, MD30A, TAMD30A, and TMD30A.
What are the common signs of a failing cylinder head gasket?
Symptoms of a blown head gasket include engine overheating, unexplained coolant loss, white smoke from the exhaust, milky or discolored engine oil, and poor engine performance.
Is this a complete gasket set or just the head gasket?
This product is the individual cylinder head gasket only. Other gaskets for the valve cover, water pump, etc., are sold separately or as part of a complete gasket set if available.
Do I need to use a sealant with this gasket?
Most modern head gaskets are designed to be installed dry without any additional sealants. Always follow the specific procedures and recommendations outlined in your engine's official service manual.
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
