VRO Fuel Pump Conversion Kit for Johnson/Evinrude 2-Stroke Applications – Replaces 3CV4
VRO Fuel Pump Conversion Kit for Johnson/Evinrude 2-Stroke Applications – Replaces 3CV4 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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VRO Fuel Pump Conversion Kit for Johnson/Evinrude 2-Stroke Applications – Replaces 3CV4 is backordered and will ship as soon as it is back in stock.
Product Details
This VRO fuel pump conversion kit is intended for selected Johnson/Evinrude 2-stroke outboard applications that use a compatible VRO fuel pump arrangement. It replaces the original variable-ratio oiling pump with a conventional fuel pump installation and requires the engine to operate on gasoline premixed with 2-stroke oil.
The kit is associated with the 3CV4 reference used for certain Johnson/Evinrude pre-mix conversion applications. Because fuel-pump brackets, hose routing, engine model, year, and serial-number conditions can vary, compare the original assembly and mounting arrangement before ordering.
- Converts a compatible VRO-equipped application to a premixed-fuel setup.
- Requires gasoline premixed with 2-stroke oil at the engine manufacturer's specified ratio; 50:1 is commonly used for this type of conversion, but confirm the correct ratio for your engine.
- Includes a fuel pump with mounting bracket and installation hardware intended to support a complete replacement installation.
- After conversion, the original automatic oil-injection function is not retained.
Part Number Matrix
Use the following reference information together with the original pump, bracket, hose routing, and engine identification. Reference numbers alone do not confirm interchangeability.
| Brand or Source | Part Number | Notes |
|---|---|---|
| Johnson/Evinrude | 3CV4 | Reference associated with the described pre-mix fuel-pump conversion application. |
| Aftermarket listings | 3CV4 | Used by some aftermarket sellers as a reference for similar conversion kits. |
Engine & Model Compatibility
This kit is intended only for compatible Johnson/Evinrude 2-stroke applications using the corresponding VRO pump and mounting arrangement. The available product information describes use with selected 3-cylinder 60–70 HP and V4 Crossflow applications, but it does not establish universal fitment for every engine in those families.
Before purchase, verify the exact engine model, year, serial-number range, stroke, pump location, bracket configuration, hose connections, and the reference number of the original pump. Do not rely on horsepower alone.
| Brand | Engine Family | Rated HP | Stroke | Year or Serial Condition | Reference | Fitment Guidance |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Selected 3-cylinder models | 60–70 | 2-Stroke | Verify exact year and serial range | 3CV4 | Confirm the original VRO pump and bracket layout before installation. |
| Johnson/Evinrude | Selected V4 Crossflow models | Not specified | 2-Stroke | Verify exact year and serial range | 3CV4 | Confirm mounting location, hose routing, and connection configuration. |
Technical Specs
- Product Type
- Fuel pump conversion kit
- Application
- Selected Johnson/Evinrude 2-stroke VRO conversion applications
- Installation
- Replacement installation using the supplied bracket, gasket, hose, and hardware where applicable
- Fuel Type
- Gasoline premixed with 2-stroke oil
- Typical Premix Reference
- 50:1 is commonly used for this conversion; confirm the correct ratio for the specific engine
- Connection
- Fuel-hose connection; verify hose size and routing against the original installation
- Bracket
- Custom mounting bracket included
- Housing Material
- Plastic pump housing with metal mounting bracket
- Weight
- Approximately 0.46 kg (1.01 lb)
What’s in the Box
- 1 x Fuel pump with custom mounting bracket
- 1 x Mounting gasket
- 1 x Additional fuel hose
- Mounting bolts; quantity may vary by kit configuration
- 6 x Zip ties
- 1 x Installation instruction sheet
Inspect the package before installation and confirm that the supplied hardware matches the original mounting arrangement. Package quantities and hardware dimensions should be verified against the physical kit.
Installation Notes
- Disconnect the battery, ventilate the work area, and relieve fuel-system pressure before beginning work.
- Identify and label the fuel lines connected to the original VRO pump so that the inlet and outlet are not reversed.
- Disconnect the fuel lines and remove the original pump assembly, noting its orientation and mounting location.
- Clean the mounting surface and check that the supplied bracket and gasket align correctly before tightening fasteners.
- Install the replacement pump and bracket with the supplied gasket and hardware. Tighten fasteners to the engine manufacturer's specifications; do not overtighten the bracket or pump housing.
- Connect the fuel inlet and outlet hoses according to the pump markings and the original fuel-system routing. Secure the hoses with suitable clamps.
- If the VRO oil-injection system is being bypassed, follow the engine manufacturer's procedure for isolating or removing the oil line and securing the oil tank system.
- Operate the engine only with the correct gasoline-to-2-stroke-oil premix for that engine. A 50:1 ratio is a common reference, but the engine manufacturer's specification takes precedence.
- Prime the fuel system and inspect every connection for leaks before starting the engine.
- After starting, verify stable fuel delivery, correct operation, and the absence of fuel leaks before returning the boat to service.
Troubleshooting & FAQ
What does this kit replace?
It is intended to replace a compatible VRO fuel-pump arrangement on selected Johnson/Evinrude 2-stroke outboards and convert the fuel system to a premixed-fuel setup. Confirm the exact engine and original pump configuration before installation.
Do I still use the VRO oil tank after installation?
This conversion is intended to bypass the automatic VRO oiling function. The oil-injection system must be handled according to the engine manufacturer's procedure, and the engine must receive the correct 2-stroke oil premix in the fuel tank.
Should I use a 50:1 fuel-to-oil ratio?
50:1 is a common premix reference for converted 2-stroke applications, but the correct ratio depends on the engine and operating requirements. Confirm the required ratio in the engine service documentation before operation.
How do I know whether this is the correct replacement?
Compare the original pump, bracket, mounting holes, pump location, hose connections, engine model, year, and serial-number range. A similar horsepower rating or a matching reference number alone is not sufficient to confirm fitment.
What are common symptoms of a failing fuel pump?
Symptoms may include hard starting, loss of power at higher speed, engine hesitation or surging, insufficient fuel delivery, or visible fuel leakage. Diagnose the complete fuel system before replacing the pump.
Is this an OEM component?
This listing is for an aftermarket replacement conversion kit, not an original-equipment component. It is supplied for the described application and should be checked against the original assembly before installation.
How fast is shipping?
Shipping availability, delivery estimates, and applicable charges are shown at checkout and may vary by destination and service level.
What is the warranty and return policy?
Warranty coverage and return eligibility are governed by the seller's current policy. Contact support with your order details before returning or disassembling a product if a problem occurs.
Safety & Important Information
- Fuel and fuel vapor are flammable. Work in a well-ventilated area away from sparks, flames, and ignition sources.
- Verify the engine model, year, serial-number range, pump arrangement, and bracket configuration before purchase.
- Do not operate the engine with incorrect fuel-oil premix, unsecured fuel lines, or an unresolved fuel leak.
- This is an aftermarket conversion kit and is not an OEM component.
- Professional installation is recommended when modifying a fuel or oiling system.
About Sea Sierra
- Marine Replacement Parts — Parts and conversion solutions for selected marine engine applications.
- Application-Focused Support — Compare the original component and engine identification before ordering.
- Global Fulfillment — Shipping options and delivery estimates are provided at checkout.
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