





⚡ Power your passion with KEMSO’s unstoppable fuel flow!
The KEMSO 340LPH High Performance Fuel Pump is a precision-engineered, alloy steel electric pump designed to replace the Walbro 255LPH GSS341. Supporting up to 600 BHP across all forced induction types, it features a high-pressure bypass valve set at 125.8 psi and is compatible with gasoline and E85 fuels. Backed by a serialized body and lifetime warranty, plus USA-based technical support, this pump delivers reliable, high-flow fuel delivery for serious automotive enthusiasts.















| ASIN | B09F9393QG |
| Auto Part Position | Inside |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #161,630 in Automotive ( See Top 100 in Automotive ) #733 in Automotive Replacement Electric Fuel Pumps |
| Body Material | Alloy Steel |
| Brand | KEMSO |
| Customer Reviews | 4.1 4.1 out of 5 stars (88) |
| Date First Available | January 28, 2021 |
| Exterior | Machined |
| Fit Type | Vehicle Specific Fit |
| Gas Type | Petrol |
| Item Weight | 15.9 ounces |
| Item model number | 10909 |
| Manufacturer | KEMSO |
| Manufacturer Part Number | M-10909 |
| Material | Alloy Steel |
| Model | KMS Fuel Pumps |
| Mounting Type | Tank Mount |
| OEM Part Number | AC Delco EP433 EP440 EP446 EP454 EP425 Carter P72228 Delphi FE0146 KEM EFP8023 EFP8230 Airtex E3222 E3285 E3627S E3628S E8023 E8119 E8235 E8272 E8321H E8322H E8324H Bosch 69516 69407 69606 69619 69620 69621 69622 69623 69624 69630 69631 69632 69634 69635 69636 69637 69638 69639 69641 69651 69655 69656 69657 69659 69660 69662 69663 69666 69667 69669 69670, Walbro GSS341 |
| Operation Mode | Electric |
| Outlet Connection Size | 0.38 Inches |
| Outlet Connection Type | -6AN |
| Package Dimensions | 6.42 x 4.61 x 3.46 inches |
| Product Grade | Performance Part |
| Specification Met | CE |
| Style | rotary_vane |
| UPC | 735366654733 |
| Vehicle Service Type | ATV, Car, Truck |
| Wattage | 100 watts |
A**R
Great product
This carb rebuild kit has been on my bike (2006 Harley Sportster 1200) for about 200 miles, everything appears to be working perfectly. I’ve never rebuilt this carb but I watched some YouTube videos and installation was easy. Lastly you can’t beat the price.
M**K
Super Fast delivery and simple to install
So, this arrived super fast. Like, 2 days. I wasn't even prepared to install it yet, but I was able to tackle it the day after it arrived. The pump feels like its great quality and the install was simple. The only thing I did not like was the supplied plastic fuel line. I'm sure it would have worked, but I went to the parts store and bought my own. After installing, it primed very easily and the car crunk right up. Its not loud at all either. In my 240sx, the pump is located behind the rear seat in the trunk area and I could not hear it in the cab once I put the cover back on and closed my seat.
D**G
Great until it wasnt
Looked great, great packaging. Install went fine. After roughly 2 hours of runtime the pump has shorted internally and stopped working. Reached out to support and nothing back.
T**D
WOW!!
So I ended up purchasing this for my 1995 Honda Civic. D15Y8. (MiniMe) I do have an adjustable fuel pressure regulator installed and had my fuel pressure set to 32 PSI on old OReilly Import Direct pump. I still have not altered my fuel pressure and she’s sitting at 41 PSI. Automatically tells me I had to open my regulator up more to increase flow due to a weak pump. I can hear this new KEMSO pump when it primes and she sounds amazing. No more hard starts. No more stuttering and running lean. Took me 15 minutes to install start to finish. A+++
T**S
Smaller diameter than OEM, but worked with added zip ties.
Replaced OEM in tank fuel pump for 1986 Mazda RX7. Smaller diameter 1.5 " vs 2.0" required zip ties for easy installation. All parts were included for installation. While I haven't measured it yet, there appears to be more than enough fuel pressure and flow for engine to fire up immediately ( within 5 seconds) and to run smoothly, even under hard acceleration. Only time will tell about durability, ( the original lasted over 40 years, 196,000 miles).
S**N
UPGRADE EVERYTHING IN THE CAR YOU SPEND YOUR LIFE WITH
It's a pump it does what it's supposed to do but FYI to everyone who reads this do yourself a favor upgrade your fuel line instead of having a metal carrying your fuel you have a rubber hose carrying your fuel into an external fuel pump that can be mounted anywhere on your car how long will they external fuel filter that could be mounted anywhere between the fuel filter and the fuel rail. Get you an adjustable gas pressure regulator to upgrade for your car so next time something is wrong you can get you at a lot easier on the outside of the gas tank instead of spending $300 to pay someone to drop the tank clean it out just to get to it fuel filter or to change out the fuel pump because on the outside of the gas tank has a lot better temperature difference between fuel filters and external fuel filter stays cooler last longer and less of a hassle to get to in case you need to replace it with another upgraded external fuel pump and always change your fuel filter a lot more than you have been in your lifetime with your car and you have right now because fuel filters are not being changed by the men who changed the oil this is why it's crucial if you have an older car or a car that you plan on keeping for a very long time upgrade it always upgrade everything.
D**N
Fits as expected
Perfect for ls swap applications
H**R
Good pump
Very good and responsive pump.. hood fit and works Great
J**N
Amazing so far, worked on Genesis coupe 2l turbo
أ**ه
لا تتناسب مع كاديلاك ديفيل 1998 تم التجربة وكانت لا تعمل بشكل صحيح ضعف في الدفع البنزين
Trustpilot
1 day ago
4 days ago