Cylinder Head Gasket – Fits Suzuki DT9.9/DT15 Outboards (Replaces 11141-93960)

$21.00 $33.00

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Product Details

This Cylinder Head Gasket provides a critical seal between the cylinder head and block, designed specifically for Suzuki two-stroke outboard motors in the 9.9–15 HP range from 1983 to 1997. It ensures proper compression and prevents coolant or exhaust leaks.

It is a direct replacement for Suzuki OEM part numbers 11141-93901 through 11141-93960 and interchanges with Sierra 18-3808 and EMP 27-00630.

Installs as a direct OEM-equivalent replacement.
Maintains factory compression ratio for reliable performance.
Engineered to seal against oil, coolant, and combustion pressure.

Part Number Matrix

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

Brand	Part Number	Notes
Suzuki	11141-93960	Primary Replacement
Suzuki	11141-93901, 11141-93910, 11141-93920, 11141-93930, 11141-93940, 11141-93950	Superseded by 11141-93960
Sierra	18-3808	Aftermarket Interchange
EMP	27-00630	Aftermarket Interchange

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Suzuki Owners: This part fits a wide range of DT9.9 and DT15 models produced between 1983 and 2004. Please verify your specific model and year against the list to ensure correct fitment.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Suzuki	DT9.9	9.9	2-Stroke	1983–1987	11141-93960	Supersedes earlier numbers
Suzuki	DT9.9D	9.9	2-Stroke	1986–2000	11141-93960
Suzuki	DT9.9 (K1-K4)	9.9	2-Stroke	2001–2004	11141-93960
Suzuki	DT15	15	2-Stroke	1983–1989	11141-93960	Supersedes earlier numbers
Suzuki	DT15K-G-Y	15	2-Stroke	1986–2000	11141-93960
Suzuki	DT15 (K1-K4)	15	2-Stroke	2001–2004	11141-93960
Suzuki	DT15C	15	2-Stroke	1989–1997	11141-93960

Technical Specs

Product Type: Cylinder Head Gasket
Installation: Direct OEM replacement
Compression Ratio: Stock (maintains factory specifications)
Dimensions: 10.63 in x 6.88 in x 0.13 in
Compatible Engines: Suzuki 2-Stroke 9.9-15 HP
Replaces OEM Number: 11141-93960

What’s in the Box

1 x Cylinder Head Gasket (11141-93960)

Installation Notes

Disconnect the battery and completely drain the engine's cooling system.
Remove any components obstructing access to the cylinder head (e.g., covers, manifolds).
Carefully loosen and remove the cylinder head bolts following the reverse of the manufacturer's tightening sequence.
Lift the cylinder head off the block and remove the old gasket.
Thoroughly clean both mating surfaces. Ensure they are completely free of old gasket material, oil, and debris.
Place the new gasket onto the engine block, confirming correct orientation using the dowel pins.
Carefully lower the cylinder head back into position without dislodging the gasket.
Install and torque the head bolts to the factory-specified values using the correct sequence. Consult your service manual for this critical information.
Reinstall all components that were previously removed.
Refill the cooling system, reconnect the battery, and start the engine, checking carefully for any fluid or exhaust leaks.

Troubleshooting & FAQ

How do I know if this gasket fits my engine?

Confirm your engine's model, HP, and year fall within the ranges listed in the Engine & Model Compatibility table. Cross-referencing your old part number with our Part Number Matrix is the best way to guarantee a perfect match.

What are the signs of a failed head gasket?

Common symptoms include engine overheating, a noticeable loss of power, white smoke from the exhaust (indicating coolant is burning), milky or frothy engine oil, or visible fluid leaks between the cylinder head and engine block.

What is the recommended replacement interval?

Head gaskets are typically replaced only when they fail or when the cylinder head is removed for other service. There is no standard replacement schedule; always install a new gasket whenever performing engine work that involves head removal.

Can I reuse my old head bolts?

It is strongly recommended to use new cylinder head bolts, especially for Torque-to-Yield (TTY) bolts, as they can stretch and may not provide the correct clamping force upon reinstallation. This can lead to premature gasket failure. Always consult your service manual for bolt specifications.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. All our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, and expedited options will appear at checkout if available for your location.

Warranty & returns?

Our parts are covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.

Safety & Important Info

Verify images and specifications against your original part before purchase. If anything differs—even if your model appears on the compatibility list—do not install.
This is an aftermarket replacement component, not an OEM part. Reference to brand names and part numbers is for identification purposes only.
Professional installation is highly recommended for safety and to ensure optimal performance. Incorrect installation can lead to engine damage.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and continuously tested for real-world reliability.
Fast Global Fulfillment — With free standard delivery to most regions, you can expect your parts in 5–15 days.
Manufacturer-Direct Value — Our parts deliver fair pricing without ever compromising on materials or quality control.

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