SKU: 22009852366

AMS Performance Intake Manifold - BMW / G20 / G21 / M340i / B58

Sale price$1882.35 Regular price$2091.50
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

AMS Performance Intake Manifold - BMW / G20 / G21 / M340i / B58As horsepower numbers rise, so do temperatures through the BMW B58s intercooling system. In order to cool down that hot intake charge air coming from the turbocharger, you need a highly efficient heat exchange process which is where the AMS Performance BMW B58 Intake Manifold comes in. With our unique parallel twin core design, we are able to route coolant flow in the most efficient way possible giving us unparalleled cooling efficiency over the


As horsepower numbers rise, so do temperatures through the BMW B58’s intercooling system. In order to cool down that hot intake charge air coming from the turbocharger, you need a highly efficient heat exchange process which is where the AMS Performance BMW B58 Intake Manifold comes in. With our unique parallel twin core design, we are able to route coolant flow in the most efficient way possible giving us unparalleled cooling efficiency over the competition. The AMS Performance BMW B58 Intake Manifold also provides for an auxiliary port fuel injection solution by way of its flush mounted -8AN fuel rail, giving the atomized fuel a nearly unimpeded path to the combustion chamber. Our superior engineering yields superior results.

  • 1250+ HP RATED PARALLEL AIR-TO-WATER INTERCOOLER CORES FOR SUPERIOR COOLING
  • AUXILIARY PORT FUEL RAIL WITH -8AN SIDE PORTS FOR EXPANDED FUELING OPTIONS
  • COMPUTATIONAL FLUID DYNAMICS (CFD) VERIFIED DESIGN FOR EVEN AIRFLOW DISTRIBUTION
  • PROPERLY ANGLED PORT INJECTION FOR IMPROVED FUEL ATOMIZATION
  • 135% LARGER CORE AREA COMPARED TO OEM
  • THREE (3) EXTRA -4AN ORB PORTS LOCATED ON PLENUM FOR VACUUM SOURCE POINTS
  • INCLUDES ALL ANCILLARY COMPONENTS, INCLUDING ALL HARDWARE, LINES, AND FITTINGS

 
ENGINEERED TO WIN

The AMS Snailworks© Engineering Team has designed the AMS Performance BMW B58 Intake Manifold to be a direct bolt-in install without hacking up your prized possession. The manifold is fully compatible with A/C, power steering, oil filter cap, and all other factory options, and is easily reversible back to stock with a few inexpensive replacement parts. The design of the new AMS Performance BMW B58 Intake Manifold positions it to be the best performing, highest quality, and easiest to install manifold on the market.

Our AMS Snailworks© Engineering Team has spent hundreds of R&D hours refining the AMS Performance BMW B58 Intake Manifold to be as efficient and effective as possible. Utilizing Computation Fluid Dynamics (CFD) analysis software, our team has been able to verify the geometry of our A356 T6 cast aluminum plenum and runners to optimize mass flow rate distribution to each cylinder. By taking this additional design step, our engineers have gone the extra mile and allowed for an equalization of airflow to within .5% to each individual cylinder port!


PROPERLY IMPLEMENTED PORT FUEL INJECTION

The 3.0L B58 engine found in various modern BMW models is a German engineering marvel. Unfortunately, the factory direct injection system is not conducive to making high horsepower or using ethanol flex fuel, which has led many owners to install port fuel injector spacers sandwiched between the cylinder head and factory intake manifold. During the R&D process of the AMS Performance BMW B58 Intake Manifold, our team knew they wanted to incorporate an optimally designed secondary port fuel injection solution as an option for customers.

By moving the injector ports onto the manifold runners themselves, we are able to properly angle injector nozzles directly at the intake valve and combustion chamber instead of at the wall of the intake runners where fuel can puddle. Our team went one step further with this concept by flush mounting the -8AN fuel rail to the manifold and pocketing the runners to allow the injectors to have an even more direct path to spray perfectly atomized fuel to the engine for maximum combustion efficiency.

 

PARALLEL SPLIT CORE DESIGN FOR OPTIMIZED COOLANT FLOW

The most significant design element of the AMS Performance BMW B58 Intake Manifold is our parallel split core design that allows us to route coolant from the middle of the unit instead of from one end to the other. This coolant flow routing reduces water pressure drop and increases flow rate at a given head pressure, meaning coolant can easily move through the system and expel heat efficiently. This split coolant flow design delivers consistently cool water to every cylinder by matching the coolest water (fresh from the heat exchanger), with the coolest air (furthest point through the intercooler), to maximize heat transfer across the length of the cores.

The 1250+ HP rated twin cores themselves have also been optimized for not just coolant flow, but for airflow throughput as well as reduced pressure drop. The AMS Snailworks© Engineering Team has struck a fine balance between airflow to the engine, and allowing the heat exchange process to cool that air. This is done by optimizing the dimensions of our proprietary parallel cores to allow for intercooler design elements like our custom spec fin densities on both coolant and air sides, fin height, and water passage size.

 

INCLUDES

  • AMS Performance Intake Manifold w/ Parallel Air-to-Water Intercooler Cores
  • AMS Performance Auxiliary Fuel Rail and Port Plugs (Injectors Available Separately)
  • AMS Performance Ancillary Components — Including all Hardware, Lines, and Fittings

CONFIRMED FITMENT

  • 2019+ BMW M340i – w/ B58 3.0L Turbo Engine (Incl. G20 and G21 chassis)

NOTES

  • Fuel rail is designed for Bosch injectors such as Injector Dynamics 1050.34.14.14.6. Other Bosch injectors may be compatible with 14mm bore lower and upper o-rings and no top cap.
  • Does not fit with OEM engine cover.
  • Designed for use with OEM oil filter cap. Aftermarket oil filter cap fitment not guaranteed.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 22009852366

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Michael Kyle.
Massapequa, US
★★★★★ 5
Made a great pillow better.
Had an awesome pillow but if I didn't fluff it before going to sleep my neck would hurt the next morning. Ordered this and put about 70% into a cardboard box to expand then shoved it into my pillow. Its been great 👍 put the rest in another pillow. Had no scent. My pillows are king sized.
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Reviewed in the United States on May 8, 2026
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Lake Worth, US
★★★★★ 5
Great for refreshing old memory foam pillows
Our memory foam pillows are 2 years old and need a little refreshing. We purchased this and was able to refresh both pillows to firmer than new condition.
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Reviewed in the United States on April 15, 2026
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Ashley
Bozeman, US
★★★★★ 4
Easy to use
I recently got one of those large body pillows that people usually use for pregnancy. Unfortunately, it was a little understuffed for my liking, and it isn't stuffed/stitched in a way that keeps the filling from moving around. The filling was bunching in places and sparse in others, causing it to be uneven. Fortunately, the pillow had a cover, and the core had a zipper where I could easily access the stuffing. I decided to try this filling to make up for the gaps. It worked great. I grabbed the stuffing and put it directly into the pillow. I did not allow it to expand fully before stuffing. I probably should have. But this was super easy to use and absolutely solved my problem. It doesn't smell great. There is definitely some smell that could probably be cleared by leaving it to air out for a while. I stuffed it right into the pillow and didn't use it until later that night. It wasn't so strong that it could be smelled through the pillow covering and the pillowcase.
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Reviewed in the United States on September 17, 2025
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Jose Garcia
Lexington, US
★★★★★ 5
Great for topping off bean bag
Bought this to help top off/fill a bean bag chair we have and it was perfect!
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Reviewed in the United States on April 6, 2026
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Houston, US
★★★★★ 1
Don't get that much
It's not very much and they really suck... but it is what it is..
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