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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: )
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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
Subaru WRX/STi 2002-2007
Read 22 Reviews | 30 Q&As
Part # GSS342 400-791
$112.99
msrp: $205.44

In stock! Ships same day

INCLUDES:

Walbro Fuel Pump 255Lph Instock  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

22 Reviews
4.5 out of 5 Stars
5 Stars
(17)
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)
4.5 Stars , 05 WRX  1 month ago
X-Ray
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 5 months ago
andyman_13
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  10 months ago
nickbell281893825
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.  11 months ago
e.s
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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Works great, tight fit 11 months ago
aaronw9
Installation is pretty straight forward. Only issue was that the pump itself would not fit with the rubber grommet used to hold it in place. I left that out and used a zip tie instead. Don’t notice any louder noises on start up. Great product as always.
  
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QUESTIONS & ANSWERS

  • Q: walbro fuel pump/ 16 sti  kouness9 days 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  WRXItalia1 month 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 1 month ago  
        
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  • Q: Fule pump   Mv125126 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 6 months ago  
        
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  • Q: Fitment  Jadesubi39 months ago

    I have an 07 sti and bought just the walbro pump, can it be straight drop in? Or do I need to buy the kit and hardware ?
    • 0 of 0 people found the following answer helpful

      A:  It may require some minor modification or adjustments, but the pump can be installed in your 07 STI.

      Marcus E. @ RallySport Direct 9 months ago  
        
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  • Q: oem  11green1111 months ago

    I am curious if there would be a problem running a higher lpm pump on the stock wrx system? I'm looking at a replacement but want something that will support future upgrades. Regards J.
    • 1 of 1 people found the following answer helpful

      A:  No problem at all! Throw this on and keep on driving!

      Tyler G.
        
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