"Which Lethal Performance/DivisionX Fuel System do I choose?!"
Fuel systems aren't generally very exciting to most. They offer a 0hp gain and, minus a little bling hidden in the engine bay, they don't offer any aesthetics at a photoshoot. BUT they are IMPORTANT. Without the proper fueling your build is at risk. DON'T SKIMP ON FUELING (or you will regret it, later).
We got a lot of questions related to the fuel systems on late model Mustangs. We've actually compiled an FAQ page with our most commonly asked questions (click here to check it out).
With that said, we're going to dig a little deeper and let you know all the details on our very own Lethal Performance fuel systems: from their horsepower ratings to what size feed & return lines they come with. Check out the charts below for each vehicle group to help you decide which of our fuel systems is the right one for YOUR BUILD.
Click below to jump to specific applications:
1999-2004 Mustang GT/Mach 1/SVT Cobra
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1999-2004 Mustang GT/Mach 1/Cobra |
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| Applications |
1999-2004 Mustang GT |
1999-2001 SVT Cobra 2003-2004 SVT Cobra 2003-2004 Mach 1 |
1999-2001 SVT Cobra 2003-2004 SVT Cobra 2003-2004 Mach 1 |
1999-2004 Mustang GT 1999-2001 SVT Cobra 2003-2004 SVT Cobra 2003-2004 Mach 1 |
1999-2004 Mustang GT 1999-2001 SVT Cobra 2003-2004 SVT Cobra 2003-2004 Mach 1 |
1999-2004 Mustang with Coyote (5.0L) swap |
| Horsepower Rating (pump gas) | 700-750 | 700-750 | 800-850 |
850-1400 (Depending on fuel pumps chosen) |
1200-2000 (Depending on fuel pumps chosen) |
800-850 |
| Pumps included | 2x Walbro 255lph | 2x Walbro 255lph | 2x Walbro 255lph | 2x Walbro 255lph | 3x Walbro 255lph | 2x Walbro 255lph |
| Deadhead or Traditional? | N/A | N/A | N/A | Deadhead | Deadhead | N/A |
| Fuel rails included? | No | No | No | Yes | Yes | No |
| Feed line | Not included | Not included | 10an to Y-block, 8an to rails | 10an to Y-block, 8an to rails | 10an to Y-block, 8an to rails | Not included |
| Return Line | 6an | 6an | 8an | 8an | 8an | 6an |
| Harness | Dual Harness | Dual Harness | Dual Harness | Dual Harness | Triple Harness | Dual Harness |
| Notes | *99-04 Mustang GT requires level sender bracket OR 03-04 Cobra OEM level sender | *99-01 Cobra and 03-04 Mach 1 require level sender bracket OR 03-04 Cobra OEM level sender | *99-01 Cobra and 03-04 Mach 1 require level sender bracket OR 03-04 Cobra OEM level sender | *99-04 Mustang GT, 99-01 Cobra and 03-04 Mach 1 require level sender bracket OR 03-04 Cobra OEM level sender | *99-04 Mustang GT, 99-01 Cobra and 03-04 Mach 1 require level sender bracket OR 03-04 Cobra OEM level sender | *Fuel hat requires 03-04 Cobra OEM level sender OR any 99-04 Mustang GT, 99-01 Cobra or 03-04 Mach 1 level sender WITH the level sender bracket |
| Installation Instructions & Diagram Links |
Budget System Installation Instructions
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99-04 Mustang Coyote Swap Diagram |
2007-2014 Shelby GT500
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2007-2014 Shelby GT500
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| Applications | 2007-2014 Shelby GT500
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2010-2012 Shelby GT500 |
2013-2014 Shelby GT500 |
| Horsepower Rating (pump gas) |
Up to 2000hp (Depending on pumps chosen) |
Up to 2000hp (Depending on pumps chosen) |
Up to 2000hp (Depending on pumps chosen) |
| Pumps included |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
| Deadhead or Traditional? | Deadhead | Traditional | Traditional |
| Fuel rails included? | Yes | Yes | Yes |
| Feed line | 10an | 10an | 10an |
| Return Line | 6an | 8an | 8an |
| Harness |
Triple Harness |
Triple Harness |
Triple Harness |
| Notes | *2010-2012 GT500 requires level sender bracket to be used with OEM level sender | *2010-2012 GT500 requires level sender bracket to be used with OEM level sender | |
| Installation Instructions & Diagram Links |
GT500 Fuel System Installation Instructions
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GT500 Fuel System Installation Instructions
GT500 (Traditional) Fuel System Diagram
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GT500 Fuel System Installation Instructions
GT500 (Deadhead) Fuel System Diagram
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2011-up Mustang GT (including the Shelby GT350)
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2011-up Mustang GT/Boss 302 and Shelby GT350 |
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2011-2017 Mustang GT 2012-2013 Boss 302
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2011-2017 Mustang GT 2012-2013 Boss 302 |
2015-2017 Mustang GT |
2018+ Mustang GT |
2018+ Mustang GT |
2016-up Shelby GT350 |
| Horsepower Rating (pump gas) | Up to 1000 |
850-2000 (Depending on pumps chosen) |
850-2000 (Depending on pumps chosen) |
Up to 1000 |
850-2000 (Depending on pumps chosen) |
850-2000 (Depending on pumps chosen) |
| Pumps included |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
2x Walbro 465lph (Optional 3rd pump) |
| Deadhead or Traditional? | N/A | Traditional | Traditional | Traditional | Traditional | Traditional |
| Fuel rails included? | No | Yes | Yes | Yes | Yes | Yes |
| Feed line | 8an | 8an | 10an | 10an | 10an | 10an |
| Return Line | 6an | 6an | 8an | 8an | 8an | 8an |
| Harness | Triple Harness | Triple Harness | Triple Harness | Triple Harness | Triple Harness | Triple Harness |
| Notes | *If vehicle is equipped with a rear feed aftermarket blower, you will need a specific kit. For vehicles with a rear-fed Whipple/VMP/etc, click here. | *If vehicle is equipped with an aftermarket blower, you may need a specific kit.
For vehicles with a Whipple or Edelbrock, click here. For vehicle with a VMP w/ fuel rails, click here. |
*If vehicle is equipped with an aftermarket blower, you may need a specific kit.
For vehicles with a Whipple, click here. For vehicle with an Edelbrock, click here. |
*Main difference from Level 1 is the change to a dual regulator setup
**If vehicle is equipped with an aftermarket blower, you may need a specific kit. For vehicles with a Whipple, click here. For vehicle with an Edelbrock, click here. |
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| Installation Instructions & Diagram Links |
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S197 Level 2 Return Style Fuel System Diagram
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S550 Return Style Fuel System Diagram
S550 Return Style Fuel System Diagram (Whipple setup)
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2018+ Mustang Fuel Hat Instructions
2018+ Mustang GT Level 1 Return Style Fuel System Diagram
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2018+ Mustang Fuel Hat Instructions
2018+ Mustang GT Return Style Fuel System Instructions
2018+ Mustang GT Return Style Fuel System Diagram
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GT350 Return Style Fuel System Diagram
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Have a question? Give us a shout! #teamlethal