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Bonnet Gasket – Fits Yanmar 2YM15 Diesel Engine (Replaces 119415-11330)

Sale price $14.50 Regular price $23.00
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Bonnet Gasket – Fits Yanmar 2YM15 Diesel Engine (Replaces 119415-11330) is backordered and will ship as soon as it is back in stock.


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 Bonnet Gasket provides a precise fit for the Yanmar 2YM15 (14 HP, 4-stroke) diesel engine, covering models from 2002 to the present. It is engineered as an OEM-specification component for sealing the cylinder head cover/bonnet, preventing oil leaks and ensuring proper engine function.

This part is a direct interchange for Yanmar OEM part number 119415-11330.

  • Designed for direct replacement installation.
  • Suitable for marine diesel engine environments.
  • Ensures a reliable seal for the cylinder head cover.

Part Number Matrix

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

Brand Part Number
Yanmar 119415-11330

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Designed for the following Yanmar engine model:

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yanmar 2YM15 14 4-Stroke 2002–Present 119415-11330 Bonnet/cylinder head cover gasket

Technical Specs

Product Type
Bonnet Cover Gasket
Installation
Direct replacement
Fuel Type
Diesel
Dimensions
13.6 x 12.1 x 0.1 cm
Weight
0.01 kg (0.02 lb)
Other Technical Attributes
OEM specification gasket for cylinder head cover/bonnet

What’s in the Box

  • 1 x Gasket, Bonnet Cover (119415-11330)

Installation Notes

  1. Ensure the engine is completely cool and the battery is disconnected before starting.
  2. Remove the cylinder head cover (bonnet) by unfastening its mounting bolts.
  3. Carefully remove the old gasket. Use a plastic scraper if necessary to avoid scratching the metal surfaces.
  4. Thoroughly clean both the cylinder head and the cover's mating surfaces to remove all old gasket material, oil, and debris.
  5. Position the new gasket correctly on the cylinder head.
  6. Reinstall the bonnet cover and tighten the bolts in the sequence and to the torque specifications recommended in your engine's service manual.

Troubleshooting & FAQ

How do I confirm this gasket fits my engine?

This gasket is specifically designed for the Yanmar 2YM15 diesel engine (2002–Present). To ensure compatibility, please verify your engine model and match the OEM part number 119415-11330 before purchasing.

What are common signs of a failing bonnet gasket?

Symptoms of a worn-out bonnet gasket include visible oil leaks around the cylinder head cover, a smell of burning oil, or finding that the old gasket is brittle, cracked, or degraded upon inspection.

Do I need to use sealant with this gasket?

This gasket is typically designed to be installed dry. However, it is always best practice to consult your engine’s official service manual for any specific instructions regarding the use of sealants.

When should this gasket be replaced?

It is recommended to replace the bonnet cover gasket whenever the cover is removed for maintenance or valve adjustments, or immediately if you detect any signs of an oil leak from the area.

What’s the difference between OEM and this aftermarket part?

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.

How fast is shipping?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What is the warranty and return policy?

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.

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