Carburetor Repair Seal Kit for Johnson/Evinrude Outboards 4–15 HP – Replaces 439072, 398452, 391305, 398453
Carburetor Repair Seal Kit for Johnson/Evinrude Outboards 4–15 HP – Replaces 439072, 398452, 391305, 398453 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
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Carburetor Repair Seal Kit for Johnson/Evinrude Outboards 4–15 HP –...
Carburetor Repair Seal Kit for Johnson/Evinrude Outboards 4–15 HP – Replaces 439072, 398452, 391305, 398453 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Carburetor Repair Seal Kit is designed for selected Evinrude, Johnson, and BRP 2-stroke outboard carburetors. It helps renew sealing surfaces during carburetor service and is intended for the specific horsepower and model-year applications listed below.
The company-listed application range includes selected 4 HP, 4.5 HP, 5 HP, 6 HP, 7.5 HP, 8 HP, 9.9 HP, 14 HP, and 15 HP Evinrude/Johnson outboards. Confirm your exact engine model and year before ordering.
Part Number Matrix
Use the following manufacturer and aftermarket reference numbers to compare the replacement kit with the part being removed. These numbers are reference identifiers only; application must still be confirmed by engine model and year.
| Reference Type | Part Number |
|---|---|
| Evinrude / Johnson / OMC / BRP references | 439072, 398452, 391305, 398453, 391937, 765574 |
| Leading-zero reference formats | 0439072, 0398452, 0391305, 0398453, 0391937, 0765574 |
| Aftermarket reference | Sierra Marine 18-7223 |
| Aftermarket reference | Mallory Marine 9-37101 |
| Aftermarket reference | GLM 40550 |
Engine & Model Compatibility
The applications below follow the company fitment record for this seal kit. Horsepower, stroke, and year conditions should be treated as a group when checking compatibility.
| Brand | Rated HP | Stroke | Years | Application |
|---|---|---|---|---|
| Evinrude / Johnson / BRP | 4 | 2-Stroke | 1983–1993 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 4.5 | 2-Stroke | 1982–1987 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 5, 6, 8 | 2-Stroke | 1984–1985 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 7.5 | 2-Stroke | 1982–1983 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 9.9 | 2-Stroke | 1974–1988 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 14 | 2-Stroke | 1968 | Outboard carburetor repair seal kit application |
| Evinrude / Johnson / BRP | 15 | 2-Stroke | 1974–1988 | Outboard carburetor repair seal kit application |
Technical Specs
- Product Type
- Carburetor Repair Seal Kit
- Application
- Selected Evinrude, Johnson, and BRP 2-stroke outboard carburetors
- Fuel System
- Carbureted gasoline outboard fuel systems
- Replacement Type
- Aftermarket service replacement
What’s in the Box
- 1 x Carburetor Repair Seal Kit
Individual seal and gasket contents may vary by application. The kit does not include a complete carburetor assembly unless specifically stated in the product listing.
Installation Notes
- Disconnect the fuel supply and follow the engine manufacturer’s safety procedures before servicing the carburetor.
- Remove the engine cowling and gain access to the carburetor according to the service manual.
- Record the routing and position of throttle, choke, linkage, and fuel-hose connections before disassembly.
- Remove the carburetor and work on a clean, organized surface.
- Disassemble the carburetor carefully and retain any reusable hard parts in their original orientation.
- Clean suitable metal components and clear fuel passages using an appropriate carburetor-cleaning procedure. Do not expose seals or other non-compatible materials to solvents that may damage them.
- Replace the old seals and gaskets with the applicable components from the kit. Do not force a component that does not match the original part.
- Reassemble the carburetor using the manufacturer’s service-manual specifications for adjustment, screw tightening, and linkage positions.
- Reinstall the carburetor, reconnect all hoses and linkages, and verify that the throttle and choke operate correctly.
- Prime the fuel system and check carefully for leaks before starting the engine. Test-run the engine in accordance with applicable marine safety procedures.
Troubleshooting & FAQ
How do I confirm that this seal kit fits my outboard?
Match the engine brand, horsepower, stroke, and year as a complete set against the compatibility table. Also compare the existing carburetor service part number with the reference numbers listed above. If the model or year is different, consult the engine service manual or a qualified marine technician before ordering.
What problems can a carburetor seal kit help address?
Replacing aged or damaged carburetor seals and gaskets can help address leakage around service joints and air or fuel-sealing surfaces. Poor running may also result from blocked passages, incorrect adjustment, ignition faults, fuel-pump problems, or other issues, so inspect the complete fuel and ignition systems when troubleshooting.
Does this product include a complete carburetor or a float?
No. This listing is for a carburetor repair seal kit, not a complete carburetor assembly. A float and other hard parts are not included unless expressly listed in the package contents.
How often should the carburetor seals be replaced?
There is no universal replacement interval. Service timing depends on fuel quality, storage conditions, operating hours, seal condition, and whether the carburetor has been disassembled. Inspect the seals whenever the carburetor is serviced and replace them if they are hardened, damaged, compressed, or leaking.
What should I do if the engine still runs poorly after installation?
Check for air or fuel leaks, incorrect linkage positions, blocked passages, incorrect adjustment, and loose or damaged connections. If the carburetor is correctly assembled and adjusted but the problem remains, inspect the fuel supply, fuel pump, ignition system, and engine compression according to the service manual.
Is this an OEM part?
This is an aftermarket replacement seal kit. The manufacturer and aftermarket reference numbers above are provided to help compare the application and service part requirements; this product is not represented as an original OEM-branded component.
Shipping speed and cost?
Typical transit is 5–15 days for standard worldwide shipping where available. Expedited options and any applicable delivery charges are shown at checkout.
Warranty and returns?
This product is covered by the applicable store warranty and return policy. Contact support with your order details if you receive a damaged or defective item, and keep the product in its original condition when requesting a return.
Safety & Important Information
- Verify the engine model, horsepower, stroke, year, and existing reference number before purchase.
- Do not assume that a reference number alone confirms fitment across every outboard model.
- This is an aftermarket carburetor repair seal kit, not a complete carburetor assembly.
- Use the correct service-manual procedures and fuel-system safety practices during installation.
- Professional installation is recommended when the carburetor, fuel system, or engine adjustments are unfamiliar.
About Sea Sierra
- Marine Replacement Parts — We supply aftermarket components for maintenance and repair of marine engines.
- Application-Focused Listings — Product references and fitment information are provided to help customers compare their original parts.
- Service Support — Contact our support team if you need help reviewing model, year, horsepower, or reference-number details before ordering.
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