Description
Cylinder Head Gasket SetFits Johnson/Evinrude 18-35 HP (Replaces 765012, 327674)
This cylinder head gasket set is engineered to fit Johnson/Evinrude 1835 HP, 2-stroke outboard motors manufactured between 1979 and 2005. It is specifically designed for 2-cylinder engine configurations.
This kit serves as a direct replacement for Johnson/Evinrude OEM part numbers 765012, 324324, 327674, and 329419. It also replaces aftermarket parts from Sierra (18-3803, 18-3899), GLM (34570), and Mallory (9-63830).
- Installation Location: Engine head and water cover.
- Fuel Compatibility: Designed for gasoline engines.
- Material: Constructed from high-quality composite material for a durable seal.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 765012 |
| Johnson/Evinrude | 324324 |
| Johnson/Evinrude | 327674 |
| Johnson/Evinrude | 329419 |
| Sierra | 18-3803 |
| Sierra | 18-3899 |
| GLM | 34570 |
| Mallory | 9-63830 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Johnson/Evinrude owners, heres a guide to help you identify your engines serial/model: Johnson/Evinrude Serial Number Guide.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson | Outboard | 18 | 2-Stroke | 1995-1998 | 765012, 324324 | Jet models |
| Johnson | Outboard | 20 | 2-Stroke | 1979-2003 | 765012, 324324 | 2-cylinder models |
| Johnson | Outboard | 25 | 2-Stroke | 1979-2003 | 765012, 324324 | 2-cylinder models |
| Johnson | Outboard | 25C | 2-Stroke | 1997-2005 | 765012, 324324 | Commercial models |
| Johnson | Outboard | 28 | 2-Stroke | 1986-1996 | 765012, 324324 | 2-cylinder models |
| Johnson | Outboard | 30 | 2-Stroke | 1984-2003 | 765012, 324324 | 2-cylinder models |
| Johnson | Outboard | 35 | 2-Stroke | 1979-1988 | 765012, 324324 | 2-cylinder models |
| Evinrude | Outboard | 18 | 2-Stroke | 1995-1998 | 765012, 324324 | Jet models |
| Evinrude | Outboard | 20 | 2-Stroke | 1979-2001 | 765012, 324324 | 2-cylinder models |
| Evinrude | Outboard | 25 | 2-Stroke | 1979-2001 | 765012, 324324 | 2-cylinder models |
| Evinrude | Outboard | 25C | 2-Stroke | 1997-2005 | 765012, 324324 | Commercial models |
| Evinrude | Outboard | 28 | 2-Stroke | 1986-1996 | 765012, 324324 | 2-cylinder models |
| Evinrude | Outboard | 30 | 2-Stroke | 1984-2001 | 765012, 324324 | 2-cylinder models |
| Evinrude | Outboard | 35 | 2-Stroke | 1979-1988 | 765012, 324324 | 2-cylinder models |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Cylinder Head Gasket Set |
| Installation | Engine Head and Cover |
| Fuel Type | Gasoline |
| Housing Material | Composite |
| Other Technical Attributes | Fits 2-cylinder models |
Package Contents
- 2 x Head Gasket (Replaces 324324, 329419)
- 2 x Water Cover Gasket (Replaces 327674, 33700)
Installation Guide
- Safety First: Disconnect the battery and spark plug wires before beginning any work.
- Drain Coolant: Drain the engine coolant completely.
- Access Components: Remove the engine cover and any other parts obstructing access to the cylinder head.
- Remove Head: Carefully unbolt and remove the cylinder head and water cover. Note the bolt pattern for reassembly.
- Remove Old Gaskets: Take off the old head and water cover gaskets.
- Clean Surfaces: Thoroughly clean all mating surfaces on the engine block and cylinder head, ensuring they are free of old gasket material and debris.
- Position New Gaskets: Place the new gaskets into their correct positions, checking for proper alignment.
- Reinstall Head: Reinstall the cylinder head and cover. Tighten the bolts to the manufacturer’s specified torque and in the correct sequence.
- Reconnect Components: Reattach all hoses, cables, and other components that were removed.
- Refill Coolant: Refill the cooling system with the appropriate coolant.
- Final Connections: Reconnect the spark plug wires and battery.
- Test: Start the engine and carefully check for any leaks around the head and cover.
Troubleshooting & FAQ
Q: How do I confirm this gasket set fits my engine?
A: This set is designed for Johnson/Evinrude 18-35 HP, 2-stroke, 2-cylinder outboards from 19792005. Please cross-reference your engine’s model and year with the “Compatible Engine Models” table and verify your original part number against our “Part Number Cross-Reference” list.
Q: What are the signs that my head gasket is failing and needs replacement?
A: Common signs of a failed head gasket include engine overheating, loss of power, white smoke from the exhaust, or water/coolant mixed in the engine oil. A visual inspection may also reveal leaks around the cylinder head.
Q: Does this set include both the head gasket and the water cover gasket?
A: Yes, this kit includes two head gaskets and two water cover gaskets, providing the necessary components for servicing the cylinder head on 2-cylinder models.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shippingtypically 515 days worldwideand standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies existeven if your model is listeddo not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 515 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
