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Description
N54 & N55 BMW E Chassis Low Pressure Fuel Pump Upgrade (Stage1-2)Upgrade your BMW 135i, 335i, or X1 with our high performance Low Pressure Fuel Pump (LPFP) Upgrade, designed to significantly enhance your vehicle's fuel delivery system. Our kits are engineered for optimal performance, providing the perfect solution for enthusiasts looking to unlock their engine's potential. Stage 1 LPFP Upgrade Inline Enhancement: Designed to be installed inline with your stock LPFP, this upgrade delivers approximately 50% more flow
Upgrade your BMW 135i, 335i, or X1 with our high-performance Low Pressure Fuel Pump (LPFP) Upgrade, designed to significantly enhance your vehicle's fuel delivery system. Our kits are engineered for optimal performance, providing the perfect solution for enthusiasts looking to unlock their engine's potential.
Stage 1 LPFP Upgrade
- Inline Enhancement: Designed to be installed inline with your stock LPFP, this upgrade delivers approximately 50% more flow when paired with your existing pump, ensuring your engine receives the fuel it needs for peak performance.
Stage 2 Bucketless LPFP Upgrade
- Complete Replacement Solution: This comprehensive upgrade replaces your stock LPFP assembly with an E85 certified bucketless assembly. Experience up to 25% more flow than our standard Stage 2 upgrade and a remarkable 100% more flow than the stock pump.
Features
-
- Plug and Play: Easily replace your stock bucket with our complete assembly.
- Billet Aluminum Bracket: Anodized for durability, designed for secure mounting of the pump and float assembly.
- E85 Compatible Walbro Pump: Choose between the standard Walbro 450 or the optional Walbro 525 pump, which offers approximately 10% more fuel flow.
- New Walbro Filter: Ensures clean fuel delivery for your engine.
- Custom Anodized Fitting: Facilitates pump output and stock fuel line connection.
- Additional Components: Includes a spare vent tube clip and two cotter pins to secure your float assembly.
Fitment
This LPFP upgrade is compatible with the following N54 & N55 BMW models:
-
BMW 1 Series:
- 2008-2013 E82 Coupe 135i
- 2008-2013 E88 Convertible 135i
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BMW 3 Series:
- 2006-2011 E90 Sedan 335i / 335ix
- 2006-2011 E91 Touring 335i / 335ix
- 2006-2013 E92 Coupe 335i / 335ix
- 2006-2013 E93 Convertible 335i / 335ix
- 2011-2013 E92 Coupe 335is
-
BMW X Series:
- 2010-2015 X1 E84
Recommended Tools
- Universal Lock Ring Removal Tool: This professional-grade tool is essential for removing the factory metal fuel pump lock ring located under the rear seat. Features adjustable arms with a diameter range of 5.2" to 7.6" (135mm to 195mm), compatible with a 1/2" drive ratchet or breaker, and a 21mm socket fitting for easy use.
Video
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 3
Unattractive but well made
Size: 4, Color: Sand
The style was unflattering overall. The shorts fit well in the waist, legs, and seat; they just made me look masculine which is not the look I was going for. For reference I am 5’7, 135#, and purchased a size 4 (which again, fit me well). I’m not sure if the issue was the length, or maybe they just down have a flattering cut - they are very boxy and hide any curves I have. 3 stars because the fit was good and they are well made. But just not attractive.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Nice look and feel
Size: 6, Color: Sand
These are beautiful shorts. Bought these for my wife and they look great and have a nice texture that gives them a higher and look and feel.
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Reviewed in the United States on January 10, 2026
★★★★★ 4
Nice design Size runs big
Size: 4, Color: Nautical Navy
The size 4 runs kinda big. It’s a very relaxed fit. I’m 5’8” 140 lbs and I need a belt to keep the size 4 up.
Very nice fabric, great cut. I’m happy with them just didn’t expect them to be as baggy.
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Reviewed in the United States on August 6, 2025
★★★★★ 5
Stretch out, size down but love the shorts.
Size: 8, Color: Ocean Breeze
Love these shorts. My favorites ever. I always always wear a size 8 in shorts. The 8 fit initially, but stretched out so much, I didn’t have to unbutton them to get them out. I bought 3 colors. I finally bought one in a size 6. Perfect fit, even if they do stretch a little. Returning the unworn ones, and replacing with size 6.
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Reviewed in the United States on August 30, 2025
★★★★★ 5
Love these shorts.
Size: 4, Color: Jet Black
Five inch for a great mom fit. Cute button closures for the pockets on the back, nice deep pockets. It’s hard to see in the video because they are black but they are the comfiest shorts. True to size. I’m a size 3-4 and the 4 fits perfect…. Even after washing and drying.
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Reviewed in the United States on June 13, 2025