Piston & Ring Kit – Fits Evinrude Johnson 60-70 HP (Replaces 5006701, 778428)

$74.25

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Delivery and Shipping

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 aftermarket Piston & Ring Kit – Fits Evinrude Johnson 60-70 HP is designed for 2-stroke Evinrude and Johnson outboard motors from 1986–2001, primarily for 60, 65, and 70 HP models. It serves as a comprehensive replacement for a worn or damaged piston assembly to restore engine compression and performance.

This kit provides a direct interchange for OEM part numbers 5006701 and 778428, as well as aftermarket references from Sierra, GLM, and Wiesco.

Includes a new piston, rings, wrist pin, and clips for a complete installation.
Engineered to meet or exceed original equipment specifications for reliable performance.
Standard bore size for straightforward replacement in compatible engine blocks.

Part Number Matrix

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

Brand	Part Number
Evinrude Johnson	5006701
Evinrude Johnson	778428
Sierra Marine	18-4063
GLM	23770
Wiesco	3172PS
Wiesco	3072PS
Wiesco	3022PS

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This kit is verified for a wide range of Evinrude and Johnson 2-stroke outboards.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Evinrude	-	60	2-Stroke	1989–2001	5006701
Evinrude	-	65	2-Stroke	1986–2001	5006701
Evinrude	-	70	2-Stroke	1986–2001	5006701
Johnson	-	60	2-Stroke	1989–2001	5006701
Johnson	-	65	2-Stroke	1986–2001	5006701
Johnson	-	70	2-Stroke	1986–2001	5006701
Evinrude	-	50	2-Stroke	1995–1999	5006701	Also replaces 394461, 433945, 437409, 437411, 398483, 437412, 5006702, 436979, 5006695, PM-7200
Johnson	-	50	2-Stroke	1995–1999	5006701	Also replaces 394461, 433945, 437409, 437411, 398483, 437412, 5006702, 436979, 5006695, PM-7200

Technical Specs

Product Type: Piston & Ring Kit
Dimensions: 3.38 x 3.38 x 3.38 inches
Weight: 0.45 kg (16 ounces)
Includes: Piston, ring set, clips, and wrist pin.

What’s in the Box

1 x Piston (Replaces 437409)
1 x Ring Set (Replaces 391170)
2 x Clips (Replaces 317831)
1 x Wrist Pin (Replaces 322188)

Installation Notes

Professional installation is highly recommended. The following are general, non-specific guidelines:

Disconnect the battery and secure the engine to prevent accidental starting. Ensure the engine is cool.
Drain the engine oil and coolant to prevent spills.
Remove the cylinder head cover, cylinder head, and gasket. Keep track of bolt order.
Carefully rotate the crankshaft to access and remove the connecting rod cap for the target piston.
Gently push the old piston and connecting rod assembly out from the top of the cylinder.
Clean the cylinder bore and inspect for wear or damage. Verify it is within service limits.
Install the new piston rings onto the new piston using a ring expander tool, ensuring correct orientation.
Attach the new piston to the connecting rod with the wrist pin and secure it with the new clips.
Lubricate the new piston, rings, and cylinder bore with fresh engine oil. Use a piston ring compressor to carefully guide the new assembly into the cylinder.
Re-install the connecting rod cap and torque the bolts to the manufacturer's specification.
Reassemble the engine using new gaskets as required, torquing all fasteners to specification.
Refill engine fluids, reconnect the battery, and perform a compression test before starting the engine.

Troubleshooting & FAQ

How can I confirm this piston kit will fit my engine?

The surest way is to match your existing part number to one listed in our Part Number Matrix. You can also review the Engine & Model Compatibility table to see if your specific engine model, HP, and year range are listed. Always compare the pictures to your old part before ordering.

Is this a standard bore size piston?

Yes, this is a standard size piston kit. It is designed to replace the original piston in an engine block that has not been bored oversize. If your cylinder has been machined, you will need an oversized piston.

My engine is a 50 HP model, but the title says 60-70 HP. Will this fit?

While the primary application is for 60-70 HP models, this kit also serves as a direct replacement for specific 50 HP Evinrude and Johnson engines manufactured between 1995 and 1999. Please check the compatibility table for details.

What are the signs that my piston and rings need replacement?

Common symptoms include a noticeable loss of engine power, reduced compression (tested with a compression gauge), excessive blue or white smoke from the exhaust, and increased oil consumption. A rattling or knocking sound from the engine could also indicate a severe piston issue.

What is the difference between an OEM part and this aftermarket kit?

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.

What are your shipping speed and cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What is the warranty and return policy?

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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