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Exhaust Gasket – Fits Suzuki DT9.9/DT15 Outboard Motors (Replaces 14151-93912)

Sale price $11.41 Regular price $18.00
Shipping calculated at checkout.

Exhaust Gasket – Fits Suzuki DT9.9/DT15 Outboard Motors (Replaces 14151-93912) is backordered and will ship as soon as it is back in stock.


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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).

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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 an aftermarket Exhaust Gasket – Fits Suzuki DT9.9/DT15 Outboard Motors (Replaces 14151-93912), designed for Suzuki 2-Stroke outboard motors from 9.9 to 15 HP manufactured between 1983 and 1999. It ensures a proper seal for exhaust system components, preventing gas leaks and maintaining engine performance.

It serves as a direct replacement for Suzuki OEM part numbers 14151-93900, 14151-93901, 14151-93901-H17, 14151-93911, and 14151-93912.

  • Installation is a direct bolt-on replacement.
  • Made from a durable blend of Steel & Asbestos-free Material.
  • Seals exhaust components to prevent leaks and maintain backpressure.

Part Number Matrix

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

Brand Part Number Notes
Suzuki 14151-93900 Superseded by 14151-93901
Suzuki 14151-93901 Superseded by 14151-93901-H17
Suzuki 14151-93901-H17 Superseded by 14151-93911
Suzuki 14151-93911 Superseded by 14151-93912
Suzuki 14151-93912 Current version

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Suzuki DT9.9 9.9 2-Stroke 1983–1987 14151-93912 Supersedes 14151-93900, 14151-93901, 14151-93901-H17, 14151-93911
Suzuki DT15 15 2-Stroke 1983–1988 14151-93912 Supersedes 14151-93900, 14151-93901, 14151-93901-H17, 14151-93911
Suzuki DT9.9 9.9 2-Stroke 1986–1999 14151-93912 From chassis number 00991k-601618 through 00993-971001

Technical Specs

Product Type
Exhaust Gasket
Material
Steel & Asbestos-free Material
Installation
Direct bolt-on replacement
Dimensions
25.5 cm L x 14.7 cm W x 0.4 cm H
Weight
30 g (0.066 lb)
Fuel Type
Gasoline
Function
Seals exhaust manifold/system components to prevent exhaust gas leaks

What’s in the Box

  • 1 x GASKET,EXHAUST (14151-93912)

Installation Notes

  1. Disconnect the battery and ensure the engine is cool.
  2. Carefully remove the exhaust components to access the old gasket.
  3. Thoroughly clean both mating surfaces, removing all traces of old gasket material and corrosion.
  4. Position the new gasket, ensuring it aligns correctly with all bolt holes and passages.
  5. Reinstall the exhaust components and tighten the fasteners to the manufacturer's recommended torque specifications, typically in a crisscross pattern.
  6. Reconnect the battery, start the engine, and check for any exhaust leaks around the new gasket.

Troubleshooting & FAQ

How do I know if my exhaust gasket is failing?

Common signs include a louder-than-usual engine noise, visible black soot streaks around the exhaust manifold joint, an audible ticking sound from the engine bay, or a noticeable exhaust smell.

Will this fit my 1995 Suzuki DT9.9?

Yes, this gasket is compatible with Suzuki DT9.9 models from 1986–1999, for chassis numbers 00991k-601618 through 00993-971001. Please verify your engine falls within this range.

Do I need to use sealant with this gasket?

In most cases, no additional sealant is required. The gasket is designed to create a seal on its own. Always ensure the mating surfaces are perfectly clean and flat before installation. Consult your service manual for specific recommendations.

Is this a replacement for part number 14151-93900?

Yes, this gasket is the current replacement and directly supersedes Suzuki part numbers 14151-93900, 14151-93901, 14151-93901-H17, and 14151-93911.

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.

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