Cylinder Head Gasket – Fits Suzuki DF40/DF50 4-Stroke Outboards (Replaces 11141-87J02)
Cylinder Head Gasket – Fits Suzuki DF40/DF50 4-Stroke Outboards (Replaces 11141-87J02) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Cylinder Head Gasket – Fits Suzuki DF40/DF50 4-Stroke Outboards (Re...
Product Details
This is a direct replacement Cylinder Head Gasket – Fits Suzuki DF40/DF50 4-Stroke Outboards (Replaces 11141-87J02). It is designed for Suzuki 40-50 HP 4-stroke engines made between 1999–2010 and select Johnson/Evinrude BRP 40-50 HP 4-stroke models using 87J series engines. This component ensures a precise seal between the cylinder head and the engine block.
This part provides a direct interchange for Suzuki part numbers 11141-87J00, 11141-87J01, and 11141-87J02, as well as Johnson/Evinrude references 5031293 and 5034353.
- Engineered for direct replacement installation.
- Constructed from a durable multi-layer steel/composite.
- Specifically designed for 4-stroke gasoline outboard engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Suzuki | 11141-87J00 / 11141-87J01 | Superseded by 11141-87J02 |
| Suzuki | 11141-87J02 | Current direct replacement |
| Johnson/Evinrude | 5031293 / 5034353 | Equivalent part for specified 87J series engines |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Suzuki applications, this part fits DF40 and DF50 models from 1999 to 2010.
For Johnson/Evinrude, this part is specific to BRP models equipped with 87J series four-stroke powerheads.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DF40 | 40 | 4-Stroke | 1999–2010 | 11141-87J02 | Supersedes 11141-87J00, 11141-87J01 |
| Suzuki | DF50 | 50 | 4-Stroke | 1999–2010 | 11141-87J02 | Supersedes 11141-87J00, 11141-87J01 |
| Johnson/Evinrude | 40 HP (87J Series) | 40 | 4-Stroke | 5031293, 5034353 | BRP models only | |
| Johnson/Evinrude | 50 HP (87J Series) | 50 | 4-Stroke | 5031293, 5034353 | BRP models only |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Housing Material
- Multi-layer Steel/Composite
- Dimensions
- 36.5 (L) x 24.5 (W) x 0.4 (H)
- Other Technical Attributes
- For 4-stroke engines only
What’s in the Box
- 1 x Cylinder Head Gasket (Replaces 11141-87J02)
Installation Notes
- Disconnect the battery and drain the engine's cooling system completely.
- Remove the engine cover, flywheel, and any components obstructing access to the cylinder head (e.g., intake/exhaust manifolds, fuel system).
- Following the service manual's sequence, loosen and remove the cylinder head bolts in several passes.
- Carefully lift the cylinder head off the engine block. Avoid using pry tools that could damage the mating surfaces.
- Remove the old cylinder head gasket and any residual material.
- Thoroughly clean both the cylinder head and engine block surfaces. Ensure they are completely flat, clean, and dry.
- Position the new gasket correctly on the engine block, ensuring all passages align.
- Carefully place the cylinder head back onto the block.
- Install new or verified head bolts and tighten them in the correct sequence and to the specified torque values found in your engine's service manual. This is critical for a proper seal.
- Reassemble all previously removed components in reverse order.
- Refill the cooling system, check engine oil, and reconnect the battery.
- Start the engine and check for any coolant, oil, or compression leaks around the head.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
Check the compatibility table on this page. Verify your engine's make, model, horsepower, and year range. It is essential to also cross-reference the OEM part number from your old gasket or service manual to ensure an exact match.
What are the common signs of a failed cylinder head gasket?
Symptoms of a bad head gasket include engine overheating, a loss of power or compression, water or coolant mixing with the engine oil (giving it a milky appearance), or white, sweet-smelling smoke from the exhaust.
Is any sealant needed when installing this gasket?
Generally, no. This is a multi-layer steel (MLS) or composite gasket designed to be installed dry. Applying sealants can interfere with its ability to seal correctly. Always follow the specific instructions in your engine's official service manual.
Can I reuse my old cylinder head bolts?
It is strongly recommended to use new cylinder head bolts. Many outboard engines use torque-to-yield (TTY) bolts that stretch during the initial installation and are not designed for reuse. Reusing them can lead to improper clamping force and premature gasket failure.
What is the recommended replacement interval?
A cylinder head gasket does not have a scheduled replacement interval. It should be replaced only when it fails or during a complete engine overhaul.
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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