Cylinder Head Gasket – Fits Volvo Penta D1A, MD1, MD1A, MD2, MD2A Engines (Replaces 833274)
Cylinder Head Gasket – Fits Volvo Penta D1A, MD1, MD1A, MD2, MD2A Engines (Replaces 833274) 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
Product Details
This aftermarket Cylinder Head Gasket – Fits Volvo Penta D1A, MD1, MD1A, MD2, MD2A Engines (Replaces 833274) is a direct-fit replacement for Volvo Penta D1A, D2A, MD1, MD1A, MD2, and MD2A diesel engines manufactured between 1958 and 1970. It ensures a reliable seal for optimal engine performance.
This part provides a direct interchange for multiple OEM and aftermarket numbers, including Volvo Penta 833274, 833274-4, 803609, 833234, 833297, 833298, Sierra 18-3842, and GLM ORB13274.
- Designed for a straightforward OEM replacement installation.
- Engineered for use in marine diesel fuel systems.
- Package includes one ready-to-install cylinder head gasket.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 833274 |
| Volvo Penta | 833274-4 |
| Volvo Penta | 803609 |
| Volvo Penta | 833234 |
| Volvo Penta | 833297 |
| Volvo Penta | 833298 |
| Sierra | 18-3842 |
| GLM | ORB13274 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is compatible with the following Volvo Penta diesel engines.
| Brand | Model | Years | OEM Part No. |
|---|---|---|---|
| Volvo Penta | D1A | 833274 | |
| Volvo Penta | D2A | 833274 | |
| Volvo Penta | MD1 | 1958–1970 | 833274 |
| Volvo Penta | MD1A | 833274 | |
| Volvo Penta | MD2 | 1964–1970 | 833274 |
| Volvo Penta | MD2A | 833274 |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- OEM Replacement
- Fuel Type
- Diesel
- Dimensions
- 18.0" L x 15.0" W x 0.5" H
What’s in the Box
- 1 x Cylinder Head Gasket (833274)
Installation Notes
- Ensure the engine is completely cool before beginning work.
- Disconnect the battery and drain the engine coolant completely.
- Carefully remove the valve cover, rocker arm assembly, and pushrods.
- Loosen and remove the cylinder head bolts in the reverse order of the manufacturer's tightening sequence.
- Lift the cylinder head off the engine block. Never pry between the head and block.
- Remove the old head gasket and thoroughly clean all old gasket material and sealant from both the cylinder head and engine block surfaces.
- Place the new gasket onto the engine block, ensuring proper orientation. Do not use any sealant unless specified by the engine's service manual.
- Carefully lower the cylinder head back into place over the dowel pins.
- Install and torque the head bolts in the correct sequence and to the manufacturer-specified torque values. This is critical for a proper seal.
- 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 is the right one for my engine?
This gasket fits specific Volvo Penta models (D1A, D2A, MD1, MD1A, MD2, MD2A). The most reliable way to confirm fitment is by matching your old part number to the ones listed in our Part Number Matrix. Also, check the compatible engine models and years listed in the compatibility table.
What are common signs of a failed cylinder head gasket?
Symptoms of a bad head gasket include engine overheating, white smoke from the exhaust (burning coolant), milky or frothy engine oil, loss of coolant with no visible leaks, and poor engine performance or misfires.
How often does a head gasket need to be replaced?
Cylinder head gaskets are not a typical maintenance item and are designed to last for many years. They are usually only replaced when they fail due to engine overheating, improper installation, or age.
Is this gasket made from the same material as the OEM version?
This aftermarket gasket is engineered to meet or exceed OEM specifications for fit, form, and function. It is made from high-quality composite materials designed to withstand the heat and pressure of marine diesel engines, ensuring a durable and reliable seal comparable to the original part.
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.
