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Cylinder Head Cover Gasket – Fits Suzuki DF70A/DF80A/DF90A/DF100B (Replaces 11189-87L00)

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Cylinder Head Cover Gasket – Fits Suzuki DF70A/DF80A/DF90A/DF100B (Replaces 11189-87L00) 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 is a direct replacement Cylinder Head Cover Gasket – Fits Suzuki DF70A/DF80A/DF90A/DF100B (Replaces 11189-87L00), engineered for Suzuki 4-Stroke outboard engines from 70 to 100 HP (2009 and newer models). It ensures a precise seal between the cylinder head cover and the cylinder head.

This part replaces Suzuki OEM part numbers 11189-87L00 and 11189-87L00-000.

  • Installation Method: Direct replacement, requires mechanical installation.
  • Location: Seals the join between the cylinder head cover and cylinder head.

Part Number Matrix

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

Brand Part Number
Suzuki 11189-87L00
Suzuki 11189-87L00-000

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Suzuki models, this part fits a range of DF series engines from 2009 onwards.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Suzuki DF70A 70 4-Stroke 2009+ 11189-87L00
Suzuki DF70ATH 70 4-Stroke 2009+ 11189-87L00 Tiller handle variant
Suzuki DF80A 80 4-Stroke 2009+ 11189-87L00
Suzuki DF90A 90 4-Stroke 2009+ 11189-87L00
Suzuki DF90ATH 90 4-Stroke 2009+ 11189-87L00 Tiller handle variant
Suzuki DF100B 100 4-Stroke 2009+ 11189-87L00

Technical Specs

Product Type
Cylinder Head Cover Gasket
Installation
Direct replacement, mechanical installation
Housing Material
Gasket material (specific composition not specified)
Dimensions
15.0 cm (L) x 13.0 cm (W) x 4.0 cm (H)
Weight
0.06 kg (0.13 lb)
Other Technical Attributes
Located between cylinder head cover and cylinder head

What’s in the Box

  • 1 x GASKET, CYLINDER HEAD COVER (11189-87L00)

Installation Notes

  1. Before starting, ensure the engine is off and the battery is disconnected.
  2. Carefully remove the cylinder head cover and the old gasket.
  3. Thoroughly clean both the cylinder head and cover mating surfaces. Remove all old gasket material, oil, and debris to ensure a perfect seal.
  4. Position the new gasket correctly on the cylinder head, aligning it with any guide dowels.
  5. Reinstall the cylinder head cover. Hand-tighten the bolts initially.
  6. Using a torque wrench, tighten the cover bolts in the sequence and to the torque values specified in your engine's service manual. This is critical to prevent leaks.
  7. Once secured, reconnect the battery, start the engine, and carefully inspect for any signs of oil leakage around the cover.

Troubleshooting & FAQ

How do I know if this gasket will fit my Suzuki outboard?

This gasket is designed specifically for Suzuki DF70A, DF80A, DF90A, and DF100B models manufactured from 2009 and newer. The best way to confirm fitment is to match your engine model and year to our compatibility chart and verify that your old part's number is 11189-87L00.

What are the signs of a failed cylinder head cover gasket?

A failing gasket typically causes an oil leak from the top of the engine, around the seam of the head cover. You might also notice a burning oil smell as it drips onto hot engine components, or see that the old gasket is visibly cracked, hard, and brittle upon inspection.

Do I need sealant with this gasket?

Generally, modern gaskets like this are designed to be installed dry without any additional sealant. Applying sealant can sometimes interfere with a proper seal. Always follow the specific instructions in your outboard'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

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