• Free shipping

  • Free help & advice

  • Hassle-free returns

  • Factory direct prices

Flash Sale now on!

FLASHSALE25

Cylinder Head Gasket – Fits Volvo Penta MD2020 Series (Replaces 3580234)

Sale price $159.00 Regular price $254.00
Shipping calculated at checkout.

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

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Cylinder Head Gasket provides a reliable seal for Volvo Penta MD2020, MD2020A, MD2020B, MD2020C, and MD2020D series diesel engines. It is engineered to meet or exceed original equipment specifications, ensuring a precise fit and durable performance in marine environments.

This part is a direct replacement for Volvo Penta OEM part number 3580234.

  • Installation Method: Direct replacement
  • Engine Compatibility: Designed specifically for diesel applications
  • Package Contents: Includes one cylinder head gasket

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Volvo Penta 3580234

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Designed for the following Volvo Penta diesel engines:

Brand Model Stroke OEM Part No.
Volvo Penta MD2020 4-Stroke 3580234
Volvo Penta MD2020A 4-Stroke 3580234
Volvo Penta MD2020B 4-Stroke 3580234
Volvo Penta MD2020C 4-Stroke 3580234
Volvo Penta MD2020D 4-Stroke 3580234

Technical Specs

Product Type
Cylinder Head Gasket
Installation
Direct replacement
Fuel Type
Diesel
Dimensions
27.0 cm x 23.3 cm x 0.3 cm
Other Technical Attributes
TH=0.5mm (per manufacturer specification)

What’s in the Box

  • 1 x Cylinder Head Gasket (3580234)

Installation Notes

  1. Ensure the engine is cool. Drain the engine coolant completely.
  2. Disconnect the battery and label all hoses, sensors, and electrical connectors attached to the cylinder head.
  3. Remove the exhaust and intake manifolds.
  4. Loosen the cylinder head bolts in the reverse order of the manufacturer's tightening sequence.
  5. Carefully lift the cylinder head off the engine block and remove the old gasket.
  6. Thoroughly clean both the cylinder head and engine block surfaces of any old gasket material or debris.
  7. Position the new gasket correctly on the engine block, ensuring it aligns with all dowels and bolt holes.
  8. Carefully lower the cylinder head back onto the block.
  9. Tighten the head bolts in the sequence and stages specified by your engine's service manual to achieve the correct torque.
  10. Reinstall all previously removed components and reconnect hoses and electrical connections.
  11. Refill the cooling system, reconnect the battery, and check for leaks after starting the engine.

Troubleshooting & FAQ

Does this gasket fit my Volvo Penta engine?

This gasket is designed for Volvo Penta models MD2020, MD2020A, MD2020B, MD2020C, and MD2020D. Please verify your engine model and the OEM part number 3580234 before purchasing.

What are common signs of a failed cylinder head gasket?

Symptoms include engine overheating, white smoke from the exhaust (coolant burn), milky or foamy engine oil, unexplained coolant loss, and poor engine performance or misfires due to loss of compression.

What material is this gasket made from?

This is a high-quality aftermarket gasket designed to meet or exceed OEM specifications. For specific material composition, refer to your engine's service manual or contact us with your engine details.

Can I reuse my old cylinder head bolts?

It is strongly recommended to use new torque-to-yield (TTY) bolts if specified by the manufacturer, as old bolts can stretch and may not provide the correct clamping force, leading to premature gasket failure.

What is the correct torque sequence for installation?

The torque sequence and specification are critical and specific to your engine model. Always refer to your Volvo Penta service manual for the exact procedure to ensure a proper seal.

How can I tell if the gasket is installed correctly?

A correctly installed gasket will result in a smooth-running engine with no leaks, overheating, or performance issues. Always run the engine to operating temperature and re-check for any signs of coolant or oil leaks.

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

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)