VRO Fuel Pump Conversion – Fits Johnson/Evinrude 90-250HP (Replaces 5007420, 5007422)
VRO Fuel Pump Conversion – Fits Johnson/Evinrude 90-250HP (Replaces 5007420, 5007422) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
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).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
VRO Fuel Pump Conversion – Fits Johnson/Evinrude 90-250HP (Replaces...
Product Details
This VRO Fuel Pump Conversion - Fits Johnson/Evinrude 90-250HP Outboards (Replaces 5007420, 5007422) is a non-oiling replacement kit for Johnson/Evinrude 90-250HP, 2-Stroke, V4, and V6 outboards (90° cylinder block) manufactured between 1984–1996. It is engineered to bypass the original Variable Ratio Oiling (VRO) system, requiring the use of premixed fuel for engine lubrication.
This assembly serves as a direct cross-reference for Johnson/Evinrude part numbers 5007420 and 5007422, as well as OMC 4-7359, EMP 1399-07359, and corresponding Volvo Penta equivalents.
- Designed for a direct, OEM-style fit and connection.
- Requires a 50:1 gasoline-to-oil premix for engine lubrication.
- Reliably bypasses the failure-prone factory VRO system.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 5007420 |
| Johnson/Evinrude | 5007422 |
| OMC | 4-7359 |
| EMP | 1399-07359 |
| Volvo | 5007420/5007422 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Johnson/Evinrude engines, this pump fits specific V4 and V6 models with a 90° cylinder bank angle. Please verify compatibility against the details provided to ensure a correct fit.
| Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| V4 90° Looper | 90–140 | 2-Stroke | 1984–1996 | 5007420/5007422 | 90° cylinder bank angle |
| V6 90° Looper | 150–235 | 2-Stroke | 1984–1991 | 5007420/5007422 | 90° cylinder bank angle |
| V6 90° Crossflow | 150–300 | 2-Stroke | 1984–1991 | 5007420/5007422 | 90° cylinder bank angle |
| Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| 150HP | 150 | 2-Stroke | 1984–1990 | 5007420/5007422 | All VRO Models |
| 150HP | 150 | 2-Stroke | 1991 | 5007420/5007422 | 90° Models Only |
| 155HP | 155 | 2-Stroke | All VRO Models | 5007420/5007422 | |
| 175HP | 175 | 2-Stroke | 1985–1990 | 5007420/5007422 | All VRO Models |
| 175HP | 175 | 2-Stroke | 1991 | 5007420/5007422 | 90° Models Only |
| 185–300HP | 185–300 | 2-Stroke | All VRO Years | 5007420/5007422 | Includes both Crossflow and Looper Engines |
Technical Specs
- Product Type
- Fuel Pump Conversion Kit (Non-Oiling)
- Installation
- Direct Replacement
- Fuel Type
- Gasoline with Premix Oil (50:1 ratio required)
- Connection
- OEM-Style Direct Fit
- Housing Color
- Black
- Weight
- ~455g (1 lb)
- Fitting Type
- OEM Compatible
- Other Technical Attributes
- Non-oil mixing design; requires premixed fuel
What’s in the Box
- 1 x VRO Fuel Pump Conversion Assembly (5007422)
Installation Notes
- Disconnect the battery and relieve any fuel system pressure before beginning.
- Label and disconnect the original fuel lines and electrical connectors from the old VRO pump.
- Carefully remove the mounting bolts and take out the old pump assembly.
- Mount the new VRO conversion pump in the same location, securing it with the original hardware.
- Connect the main fuel inlet and the outlet line to the carburetors.
- Cap off or remove the oil inlet line and the oil-pulse line from the crankcase, as they are no longer used. Disconnect and remove the VRO pump's electrical harness.
- Henceforth, you must only use a 50:1 fuel/oil premix in your main fuel tank. The oil injection system is now permanently disabled.
- Prime the fuel system according to your engine's service manual before starting.
- Once started, carefully check for any fuel leaks around the pump and fittings.
- Professional installation is highly recommended to ensure safety and proper function.
Troubleshooting & FAQ
What does "non-oiling" mean for this conversion pump?
This pump is a "non-oiling" assembly, which means it does not mix oil with fuel. The original VRO (Variable Ratio Oiling) system on your engine is completely bypassed. You must use fuel premixed with oil at a 50:1 ratio for proper engine lubrication.
Is this pump a direct fit for my engine?
Yes, this is an OEM-style direct replacement for the part numbers listed. It is designed to fit Johnson/Evinrude 90-250HP V4 and V6 engines (90° block) from 1984–1996. Please verify the part numbers and model chart to ensure it matches your specific application.
What are signs of a failing VRO pump?
Common symptoms include the engine surging or bogging down, difficulty starting, stalling at idle, excessive smoke, or visible fuel/oil leaks from the pump housing. An alarm horn may also sound on equipped models.
Do I need other modifications for installation?
No permanent modifications to the engine are required. However, you must securely cap the oil inlet port and disconnect the VRO electrical harness. It is essential that you switch to using 50:1 premixed fuel in your tank.
Why should I convert from a VRO system?
Many owners convert to a standard fuel pump to eliminate a common point of failure. A failed VRO system can lead to incorrect oiling and catastrophic engine damage. This conversion simplifies the fuel system and gives you direct control over the fuel-to-oil mixture.
OEM vs. Aftermarket?
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.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
