Thermostat (133°F/56°C) – Fits Johnson/Evinrude 200-250HP (Replaces 5001036, 5000355)

Thermostat (133°F/56°C) – Fits Johnson/Evinrude 200-250HP (Replaces 5001036, 5000355)

This thermostat is designed for Johnson and Evinrude 200-250 HP V6 2-Stroke outboard engines manufactured between 1999 and 2005. This includes carbureted models (1999-2001) and FICHT fuel injection models (2000-2005).

It serves as a direct replacement for several OEM and aftermarket part numbers, ensuring wide compatibility with specified engine models. Please verify your part number before ordering.

• Direct Installation: Designed as a direct OEM-equivalent replacement part.
• Operating Temperature: Opens at a precise 133°F (56°C) to maintain optimal engine temperature.
• Complete Kit: Includes one thermostat and two seals for a comprehensive installation.

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 x Thermostat (5000355/5001036)
• 2 x Seal (0339044)

Installation Guide

1. Disconnect Battery: Ensure the engine is off and disconnect the negative battery cable for safety.
2. Drain Coolant: Partially drain the engine's cooling system to a level below the thermostat housing.
3. Locate Housing: Find the thermostat housing on the engine block or cylinder head.
4. Remove Housing Cover: Loosen and remove the bolts securing the thermostat housing cover.
5. Remove Old Thermostat: Carefully lift out the old thermostat and the accompanying seal or gasket. Note its orientation.
6. Clean Surfaces: Thoroughly clean the mating surfaces of the thermostat housing and cover, removing any old gasket material or corrosion.
7. Install New Thermostat: Place the new seal and thermostat into the housing, ensuring it is correctly oriented.
8. Re-secure Cover: Re-place the housing cover and tighten the bolts to the manufacturer's recommended torque specifications.
9. Refill Coolant: Top off the cooling system with the appropriate coolant mixture.
10. Check for Leaks: Reconnect the battery, start the engine, and let it warm up. Carefully inspect the housing for any signs of coolant leaks.

Troubleshooting & FAQ

How do I confirm this thermostat fits my engine?

First, check your engine's model, horsepower, and year against the "Compatible Engine Models" table. Second, verify that your existing part number matches one of the numbers in our "Part Number Cross-Reference" list, such as 5001036 or 5000355.

What are the common signs of a failing thermostat?

A faulty thermostat can cause your engine to overheat, run too cold and never reach proper operating temperature, or exhibit erratic temperature gauge readings. This can lead to poor performance, increased fuel consumption, and engine damage.

This is listed as 133°F, but I see 130°F elsewhere. Which is correct?

The precise factory specification for this thermostat's opening temperature is 133°F (56°C). While some aftermarket listings may round this number to 130°F, this part is built to the exact 133°F rating for optimal engine performance.

OEM vs. Aftermarket?

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.

How fast do you ship and how much does it cost?

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.

What is your warranty and return policy?

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.