Retainer & Needle Assembly – Fits OMC Evinrude Johnson 25-150HP (Replaces 378252)

$99.99

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You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

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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 Retainer & Needle Assembly is a high-quality replacement part designed for OMC, Evinrude, and Johnson outboard engines. It is engineered for a precise fit on a wide range of models from 25 to 150 horsepower, ensuring reliable fuel system performance.

This component directly replaces OMC part numbers 378252 and 0378252.

Installation Method: Direct OEM replacement
Intended Use: For gasoline-powered outboard engines

Part Number Matrix

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

Brand	Part Number	Notes
OMC	378252	Interchangeable
OMC	0378252	Interchangeable

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand	Rated HP	OEM Part No.	Notes
OMC/Evinrude/Johnson	25-150	378252 / 0378252	Part numbers are interchangeable

Technical Specs

Product Type: Retainer & Needle Assembly
Installation: Direct OEM replacement
Fuel Type: Gasoline
Dimensions: 10.0" L x 9.0" W x 2.0" H

What’s in the Box

1 x Retainer & Needle Assembly

Installation Notes

Disconnect the engine's battery and ensure the fuel supply is shut off.
Locate the existing retainer and needle assembly within the carburetor or fuel system.
Carefully remove any connected fuel lines and then extract the old assembly.
Clean the housing area to ensure a proper seal with the new part.
Install the new retainer and needle assembly, making sure it is seated correctly.
Re-attach fuel lines and any other components that were removed.
Reconnect the battery, restore the fuel supply, and check for leaks before starting the engine.

Troubleshooting & FAQ

How do I confirm this part fits my engine?

This assembly is designed for most 25HP to 150HP OMC, Evinrude, and Johnson outboards. The most reliable method is to verify your engine's required part number against the direct replacements listed: 378252 and 0378252. If your part number matches, it will fit.

What are the signs of a failing retainer and needle assembly?

Common symptoms include fuel leaks around the carburetor, poor or rough idling, frequent engine stalling, or difficulty starting. These issues often point to a problem with fuel flow regulation, which this assembly controls.

Can I install this part myself?

While installation can be performed by individuals with mechanical experience, we recommend professional installation to ensure it is done correctly, preventing potential fuel leaks and ensuring engine safety and performance.

Is any special maintenance required for this part?

No periodic maintenance is required for the assembly itself. However, it should be inspected for wear and proper function during routine fuel system service or when troubleshooting related issues.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility. All parts are batch-inspected for consistency and quality.

Shipping speed & cost?

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

Warranty & returns?

This part is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and 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.

Payment & Security

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