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Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Community Media
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph (Part Number: )
Walbro Fuel Pump Kit 255lph
Subaru WRX/STi 2002-2007
Read 23 Reviews | 32 Q&As
Part # GSS342 400-791
$112.98
msrp: $205.43

Ships within 15 days

INCLUDES:

Walbro Fuel Pump 255Lph Out of Stock  QTY (1)
Walbro Installation Kit Instock  QTY (1)

Features & Product Details

The Walbro GSS342 fuel pump is one of the most popular aftermarket fuel pumps on the market today. Flowing 255 Liters Per Hour it can flow enough fuel for most applications under 500 hp. This kit comes with the installation kit for the vehicle shown in the confirmed applications.

Specifications

Brand: Walbro
Adjustable: No
Fuel Flow: 255lph
Install Kit Included: Yes
Mfgr. Warranty: No Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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REVIEWS & CUSTOMER MEDIA

23 Reviews
4.5 out of 5 Stars
5 Stars
(18)
4 Stars
(2)
3 Stars
(1)
2 Stars
(1)
1 Stars
(1)
Customer Photos and Videos
Walbro Fuel Pump Kit 255lph ( Part Number: GSS342 400-791)
Walbro Fuel Pump Kit 255lph ( Part Number: GSS342 400-791)
Walbro Fuel Pump Kit 255lph ( Part Number: GSS342 400-791)
Works good 1 month ago
5out of 5stars

I’ve been running this walbro pump for atleast 6 months now. Still works great. There’s been like 2 times I can recall that i heard it running abnormally loud for about 30 seconds while the car was on. It was the middle of summer 90°+. I don’t know if that maybe had something to do with it. Otherwise no issues.
  
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4.5 Stars , 05 WRX  4 months ago
5out of 5stars

Tight fit since the walbro was too long by about 1cm. That requires bending the bottom of the bracket down which is not pleasing but it worked. You can see what I mean in the picture. Also the clamps in the kit are not fuel line clamps. Besides those issues the install was a breeze. The pump is notably louder on start-up, but even on my very quiet car it’s pleasant and not heard from after that. It did require tuning since I had been at the limits of the stock pump. The new one put me a little rich at the top end but I would say a tune is not usually necessary.
  
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Walbro 255 9 months ago
5out of 5stars

I had to change the fuel filter on my '04 STi and I figured I might as well upgrade my fuel pump while I'm in there... This kit comes with everything I needed. Direct fit. Easy to do.
  
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Awesome  1 year ago
5out of 5stars

Just got this because my old pump was failing and was causing a lean condition. It's like everyone says it's loud but you know its working. My cars stock and this is Definitely worth the upgrade, doesn't bog or hesitate at full boost. it takes around an hour to do yourself. Just be careful with the level arm putting it back in. Your gonna need the upgrade eventually just get it
  
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Works well, tight fit.  1 year ago
5out of 5stars

Works great. Was a tight fit into the 2002 WRX fuel pump assembly, but I didn't have to shave or bend anything, just mindful when putting it together. No issues at all, though.
  
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QUESTIONS & ANSWERS

  • Q: Horsepower   Seaneg111 day ago

    What is the maximum horsepower I could hit with this pump?
  • Q: walbro fuel pump/ 16 sti  kouness3 months ago

    What is required to install the walbro 255 fuel pump into a 16 Sti? Is it a drop in or requires modification? thanks
  • Q: Post-Instal  WRXItalia4 months ago

    '06 STi was running lean and hesitating/boost leak was present. Bought the 255 thinking it was the pump. After the install the CEL was gone and it idles a lot better but the car has a bad boost leak and hesitates and bogs on full boost. After letting off the throttle at any speed the car lurches as well. Is this still the fuel pump issue?
    • 1 of 1 people found the following answer helpful

      A:  A boost leak cannot be related to a fuel pump as fuel does not run in any part of where the boost is flowing. You are going to need to have a mechanic diagnose your car.

      Devan M. @ RallySport Direct 4 months ago  
        
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  • Q: Fule pump   Mv125129 months ago

    Can I run e85 with this fule pump
    • 0 of 0 people found the following answer helpful

      A:  This fuel pump is E85 compatible, although you may want to go for a higher LPH pump, depending on your power goals.

      Marcus E. @ RallySport Direct 9 months ago  
        
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