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⛽ Keep your engine primed and running smooth — don’t let fuel backflow slow you down!
The EVIL ENERGY 3/8" (10mm) check valve is a robust, aluminum alloy one-way valve designed for fuel lines in carburetor and low-pressure systems. It reliably prevents fuel backflow with a stainless steel spring, operates across a wide temperature range (-22℉ to 266℉), and withstands pressures up to 6 bar. Its compact barb fittings enable quick installation, making it a trusted choice for maintaining stable fuel flow and improving engine start-up performance.
























| ASIN | B07ZB2R2FS |
| Best Sellers Rank | #16,515 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Exhaust Vacuum Tee Connectors |
| Brand | EVIL ENERGY |
| Brand Name | EVIL ENERGY |
| Connector Type | Barb |
| Customer Reviews | 4.4 out of 5 stars 3,032 Reviews |
| Exterior Finish | Stainless Steel |
| Exterior finish | Stainless Steel |
| Inlet Connection Size | 0.38 Inches |
| Inlet Connection Type | Barb |
| Inlet connection size | 0.38 Inches |
| Inlet connection type | Barb |
| Manufacturer | Speedwow Tuning |
| Manufacturer Part Number | EV01342S10SRCA1 |
| Material | Aluminum |
| Material Type | Aluminum |
| Maximum Pressure | 6 Bars |
| Model Number | EV01342S10SRCA1 |
| Number of Items | 2 |
| Number of Pieces | 2 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.38 Inches |
| Outlet Connection Type | Barb |
| Outlet connection type | Barb |
| Set Name | EVIL ENERGY 2-Piece Check Valve Set |
| Size | 3/8 |
| Specification Met | VIL |
| Thread Size | 3/8 inch NPT |
| Thread Type | NPT |
| Unit Count | 2 Count |
| Valve Type | Check Valve |
A**R
Good Price Good Product
These work exceptionally weel in preventing loss of prime to the electric fuel pump.
C**S
Quality and correctly sized
Nice construction, used for pond water feature rather than fuel so s tad over engineered for the purpose but I like that. Good fit well made.
R**.
Pesimo
Pesima calidad, no es de la medida que describe (mas chica) y no soporta mas de 5 psi de presión, no lo puedo devolver porque ya lo use!
D**3
Works as intended.
My zero turn would crank a little longer than I thought it should before it would start. I suspected the fuel was siphoning back to the tank after shutdown. This was cheap and easy to install so why not give it a try. Glad I did. Much better now.
M**D
Work will
Recommend
Trustpilot
3 weeks ago
5 days ago