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F25 X3 28i/35i FMIC - ARM Motorsports

F25/F26 X3/X4 28i/35i FMIC

by armmotorsports
$447.00 - $447.00
$447.00
$447.00 - $447.00
$447.00
  • 30 Day Money-Back Guarantee | IN STOCK

HIGHLIGHTS

• Increase HP / TQ
• 120% Larger Front Area
• 94% More Efficient than OEM
• Fully Reversible
 

PROFILE

The ARM Motorsports F25/F26 X3/X4 FMIC is a Direct-Fit Front Mount Intercooler solution for your BMW X3/X4 xDrive 28i and xDrive 35i!  One of the F25/F26 X3/X4's most significant weak-points is its stock intercooler.  This becomes obvious when tuning the N20/N55 to increase boost with a Stage 1 tune and even more so with a Stage 2+ tune.  With a higher boost target the charged air coming out of the compressor is hotter, therefore increasing IAT's.  To compensate for the higher IAT's the ECU (DME) reduces boost, timing, and overall power to the engine.  This is the exact opposite of what you want for getting your F25/F26 X3/X4 to perform better.  In order to keep those IAT's low, a larger and more effective intercooler is needed. 

CONSTRUCTION

The ARM F25/F26 X3/X4 FMIC is the perfect cooling solution for any stock turbo or upgraded turbo N20/N55 setup.  With an intercooler core size of 20x11x3" and an overall volume of 660cu in. the ARM F25/F26 FMIC is 235cu.in. or 36% larger than the stock N55 intercooler which comes in at only 425cu in.  In addition, the ARM F25/F26 X3/X4 FMIC utilizes an ultra-dense 14 fins per inch external core, giving it the best cooling performance possible.  

BMW X3 Intercooler FMIC F25
 

With a 220sq.in. face the ARM F25/F26 X3/X4 FMIC has a 120% larger frontal area than the OEM intercooler with only a 100sq.in. face, and 55sq.in. or 33% larger than most aftermarket intercoolers for the F-Series platform.  Having a larger frontal area equates to more effective cooling compared to intercoolers of similar total volume.  In the milliseconds that the ambient air passes through the intercooler it warms up, making the actual cooling less effective towards the rear of the intercooler.  Taking the area towards the rear of the intercooler and bringing it towards the front improves the overall ability of the FMIC to cool the charged air on the X3/X4.  This is shown in our IAT testing results below. 

INTAKE AIR TEMPERATURE RESULTS

Our baseline run was performed on a 335i running 16psi of boost with the stock F-Series intercooler.   The 3rd gear run started at 93 degrees and ended at 126 degrees, a huge increase of 33 degrees Fahrenheit on 16psi of boost, and certainly restricting the amount of power this N55 could have been making.

BMW X3 Intercooler FMIC F25
 

After installing the ARM F-Series FMIC there was a massive improvement in cooling performance that resulted in only a 2 degrees Fahrenheit increase in IAT. In this 3rd gear run with boost peaking at 18psi, which is 2psi higher than the stock intercooler run, it starting at 95 degrees and ended at only 97 degrees. This is a 94% improvement in cooling over the OEM F30 intercooler!  

INSTALLATION

Installation of the ARM F25/F26 X3/X4 FMIC upgrade is a basic bolt-on procedure similar to the F30 FMIC installation, but with the addition of trimming one small piece of plastic measuring 1x3".  It does not require you to remove the front bumper.  It is a direct fit which bolts up into the original stock intercooler location.  The CNC connectors will connect to either the OEM charge piping or to any upgraded intercooler piping that fits the stock intercooler.  These CNC connectors are secured to the FMIC with our 6-layer reinforced silicone couplers. 

BMW X3 Intercooler FMIC F25

IN THE BOX

• ARM F25/F26 FMIC
• OEM Style Connectors
• Mounting Hardware
• Hoses and Clamps
 

FITMENT GUIDE

 Make Chassis Model Engine
BMW F25
 X3 xDrive28i
 N20
BMW F25 X3 xDrive35i N55
BMW F26 X4 xDrive28i N20
BMW F26 X4 xDrive35i N55

 

ARM MOTORSPORTS LIFETIME WARRANTY

Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
*Kits are made-to-order. As we do not physically keep everything in stock, kits have a ship time of about 3 weeks after your payment has processed. This is common for the N54 Single Turbo market if you look on other websites.

Unleash the full potential of your N54 engine with our Top Mount Single Turbo Kit, engineered for seamless fitment, durability, and big power capability. Designed to support 800whp+, this kit is the ultimate upgrade for those who demand power without compromise.

High-Quality 304 Stainless Steel Manifold

Crafted from 304 stainless steel, the manifold offers superior heat resistance, corrosion protection, and structural integrity. Unlike lower-grade materials, 304 stainless ensures long-term reliability under extreme heat and boost pressures, making it ideal for high-performance applications. The precision-engineered tubular design is optimized for maximum exhaust flow, reducing backpressure and enhancing turbo efficiency. This manifold is similar to ones being sold on AliExpress and other overseas markets. However, we've partnered directly with the manufacturer to provide these manifolds in the highest of quality. Unlike those that are drop-shipping similar manifolds from unreliable sources. You are purchasing directly from the source.

Industry-Leading Fitment

Fitment has been meticulously tested and compared against all major top-mount kits on the market, and ours ranks among the best. The compact yet efficient design ensures hassle-free installation, eliminating clearance issues that plague other kits.

Smart Wastegate Placement

No more tearing the entire kit apart just to make a simple wastegate adjustment. Our strategically placed wastegate design allows for quick, easy access, so you can fine-tune your setup without unnecessary downtime.

Built for Serious Power

With the ability to support 800whp+, this kit is designed for enthusiasts pushing their N54 to the limit. Whether you’re chasing high-speed pulls or dominating the track, this setup provides the boost response, reliability, and power potential you need.

So what's included? 

(x1) Top Mount T4 Manifold
(x1) Relocated Coolant Waterpipe 
(x2) Coolant Port Block Off Plugs
(1x) -4 Oil Feed Adapter
(1x) Rear Oil Drain Freeze Plug
(1x) 5/8" ID Oil Drain Hose
(1x) 5/8" Oil Drain Barb 
(x1) -4 Stainless Steel Oil Feed Hose + Adapter
(x16) OEM Exhaust Manifold Studs
(x16) OEM Reduced Length Exhaust Manifold Nuts
(x6) Elring Exhaust Manifold Gaskets
(1x) T4 Turbo Blanket
(x3) O-Rings
(1x) Turbo-To-Intercooler Piping
(x1) Turbo (Optional)
(x1) 3" V-Band Hood Exit (Optional)
(x1) 44mm Wastegate (Optional)