top of page
#1 OEM Siemens UPGRADE Fuel Injectors (6) set for 1999-2006 BMW 2.5L 2.8L I6

#1 OEM Siemens UPGRADE Fuel Injectors (6) set for 1999-2006 BMW 2.5L 2.8L I6


This is a flow-matched set of 6 OEM Siemens UPGRADE professionally remanufactured fuel injection units.


This set directly replaces the stock Siemens injectors 1427240


The injectors will look different from your stock injectors, but they have the same fitment from seal to seal and same flow rate as the stock injectors.



This set fits the following vehicles:


2001-2005 BMW 320i 2.2L I6

2000 BMW 323ci 2.5L I6

1999-2000 BMW 323i 2.5L I6

2001-2006 BMW 325ci 2.5L I6

2001-2005 BMW 325i 2.5L I6

2001-2005 BMW 325xi 2.5L I6

2000 BMW 328ci 2.8L I6

2000 BMW 328i 2.8L I6

2001-2005 BMW 525i 2.5L I6

1999-2000 BMW 528i 2.8L I6

2004-2006 BMW x3 2.5L I6

1999-2002 BMW z3 2.5L I6

1999-2000 BMW z3 2.8L I6

2003-2005 BMW z4 2.5L I6



Replaces Siemens Part Number: 1427240



Benefits of the Upgraded Units:


Improved Leak Resistance

Faster Response Time

More Precise Fuel Metering

Improved Atomization

Improved Coil Design

Rust-Free Composite Exterior


No modifications are needed, these are "plug-and-play" upgrades that arrive ready to be installed. If you have any questions, please send us a message. Thank you!

 The ECU controls your injectors as a set. So if they are imbalanced at all, you will have some cylinders that are flowing slightly rich and some flowing slightly lean. The percentages are how closely the injectors are flow matched to one another. The closer that the injectors flow to one another, the more precise the entire fuel system will be which makes it more efficient. This improved efficiency manifests as better fuel mileage and a smoother engine.




We offer an advanced 1% flow-matching service which also includes documentation of the flow-results for each injector. This is $80 for the advanced flow matching. 




 As far as which option is correct, the choice is entirely up to the customer based on their individual needs and budget. Select your preferred flow-match from the drop down menu

bottom of page