338222 Head Gasket for Evinrude Johnson | JLM Marine

Head Gasket for Evinrude Johnson 9.9HP 15HP (255cc) – 1993-1999

This cylinder head gasket is designed to fit Johnson and Evinrude marine outboard engines, specifically the 9.9HP and 15HP (255cc) models manufactured between 1993 and 1999. Engineered to deliver reliable sealing performance, this gasket ensures proper compression and prevents coolant or combustion leaks in your engine's head assembly.

This aftermarket replacement directly replaces OEM part number 338222, providing a cost-effective solution without compromising on quality or fitment.

• Precision-cut gasket material for optimal sealing
• Direct fit for Johnson/Evinrude 255cc engines
• Essential component for cylinder head service and rebuild

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

• 1 × Cylinder Head Gasket (338222)

Installation Guide

1. Disconnect the battery and remove the engine cover to access the cylinder head.
2. Drain the coolant system completely to prevent spills during disassembly.
3. Remove the cylinder head bolts in a crisscross pattern to avoid warping. Carefully lift off the cylinder head assembly.
4. Thoroughly clean both the cylinder head and engine block mating surfaces, removing all old gasket material and debris. Use a gasket scraper and solvent as needed.
5. Inspect the cylinder head for cracks, warping, or damage. Resurface or replace if necessary.
6. Position the new head gasket on the engine block, ensuring all bolt holes and water passages align correctly.
7. Carefully place the cylinder head back onto the engine block, aligning it with the dowel pins.
8. Install the cylinder head bolts finger-tight in a crisscross pattern.
9. Torque the head bolts to the manufacturer's specifications in the recommended sequence (typically starting from the center and working outward).
10. Refill the cooling system with fresh coolant and check for proper levels.
11. Reconnect the battery and reinstall the engine cover.
12. Start the engine and check for leaks around the cylinder head. Allow the engine to reach operating temperature and recheck for any seepage.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my engine?
A: Cross-reference your engine's serial number with the compatibility table above. This gasket fits Johnson/Evinrude 9.9HP and 15HP (255cc) models from 1993 to 1999. If your original part number is 338222, this is a direct replacement.

Q: What are the signs that my cylinder head gasket needs replacement?
A: Common symptoms include coolant leaks around the cylinder head, white smoke from the exhaust, engine overheating, loss of compression, or coolant mixing with engine oil. If you notice any of these issues, inspect the head gasket immediately.

Q: Do I need to resurface the cylinder head when replacing the gasket?
A: It's recommended to check the cylinder head for warping using a straight edge and feeler gauge. If the head is warped beyond manufacturer specifications, it should be resurfaced by a machine shop before installing the new gasket.

Q: What torque specifications should I use for the head bolts?
A: Always consult your engine's service manual for exact torque specifications and tightening sequence. Proper torque is critical to prevent gasket failure and ensure even compression across the sealing surface.

Q: Is this an OEM gasket or 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 shipping—typically 5–15 days worldwide—and 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 exist—even if your model is listed—do 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 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.