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downpipes

AFE Filters 48-46303-HN - Race Series Twisted Steel Down-Pipe

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This part fits

  1. 2016 BMW 428i xDrive
  2. 2016 BMW 428i
  3. 2016 BMW 328i xDrive
  4. 2016 BMW 328i
  5. 2015 BMW 428i xDrive
  6. 2015 BMW 328i
  7. 2015 BMW 428i
  8. 2015 BMW 328i xDrive
  9. 2014 BMW 428i
  10. 2014 BMW 328i
  11. 2014 BMW 428i xDrive
  12. 2014 BMW 328i xDrive
  13. 2013 BMW 328i xDrive 2.0L L4 cid:122 cc:1997
  14. 2013 BMW 328i 2.0L L4 cid:122 cc:1997
  15. 2012 BMW 328i 2.0L L4 cid:122 cc:1997
  16. show all...
Authorized Dealer
white carb warning, not legal street use in California Not for sale or street use in California.

About this product

Part #: 48-46303-HN

100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks. Paired opposite firing cylinders with equal, specifically tuned primary lengths maximizes scavenging and increases torque throughout the powerband. High grade stainless tubing with a uniform brushed finish provides a beautiful look and high resistance to corrosion. aFe has designed this system to retain all your factory sensors for a hassle free installation. Also included are extensions for a simple plug & play installation. High quality laser cut header flanges provides superior sealing at the head surface. Machined flanges and USA made stainless v-band clamps provide a simple to install leak free joint between the headers and X-pipe. A direct bolt-on system which requires no cutting or drilling to provide a hassle-free installation. This system is constructed of mandrel bent, stainless steel brushed tubing for maximum performance, corrosion resistance and strength eliminating cracking. This system includes dual, hi-flow, 200 CPSI, stainless steel catalytic converters for maximum flow and performance. aFe PFADT Series Headers & X-Pipes are engineered and manufactured in our Corona, California manufacturing facility. This system is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle.

More Details

Bend Angle45 Degrees
GaugeOEM
Inlet Inside Diameter (in.)4
MaterialStainless Steel
Tube Diameter4
Additional Documents
  1. Technical Drawingjpg

See what our community says about afe-filters products

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What made you choose this particular product?
Recommendations from other BMW E39 drivers/owners
Is this your first time buying from this brand? Did you consider other brands?
Yes, the first time I have installed a mod like this.
Was it easy to install? Any installation tips that will help others?
Very easy to install; installation directions included with the components.
Once you've had a chance to use the product, did it meet your expectations?
It has exceeded my expectations.
View on Terry's build
Jeremy Brewster

52

Jeremy Brewster
2008 Toyota Tacoma
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Oilless Filter.
Is this your first time buying from this brand? Did you consider other brands?
Yes, first time. Considered K&N drop-in filter as well.
View on Jeremy's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Safer than urd, volant, and the new trd
View on Brock's build
Jean-Pierre Holland

424

Jean-Pierre Holland
1997 BMW M3
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Have had aFe CAI on our e38 m5/
Is this your first time buying from this brand? Did you consider other brands?
nope
Was it easy to install? Any installation tips that will help others?
TBD
View on Jean-Pierre's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
5.3L/6.2L compatibility
Is this your first time buying from this brand? Did you consider other brands?
Yes, first time buyer. Had considered other brands like Volant, K&N, S&B, and others, but liked AFe for the 5.3L/6.2L compatibility I will need when switching to the ported LT1 throttle body.
Was it easy to install? Any installation tips that will help others?
I installed this myself, and it was honestly fairly easy. One thing to note is that there is a rubber post on the bottom of the intake box itself that slips into the tray where your OEM air box was. Feels kind of loose and sometimes feels weird because it doesn't have a full seal around the old air box opening in the fender unless you push it all the way against it. Other than that, it's honestly fine. Has a great sound and the truck is so much fun to drive with it.
Once you've had a chance to use the product, did it meet your expectations?
So far, so good. It always puts a smile on my face when I pop the hood and see it there.
Any additional comments?
If you are looking to make some additional power and you have a bit of a budget along with the possibility of doing the L86 (or LT1) intake manifold/LT1 throttle body conversion on your 5.3L, this a great intake to buy because it will already have the adapter you need for both the 5.3L and the 6.2L. Will make the throttle body/intake manifold change very easy.
View on Shane's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About AFE Filters

aFe, or Advanced FLOW Engineering is one of the industry leading manufacturers of cold air intakes, air filters, oil filters and all things related to optimizing your air induction. Once you have all those nifty throttle body spacers and a gaping turbo manifold, you’ll definitely need a fuel adjustment. aFe has you covered there too. They offer many different programmers that will keep your ride well fed and offering ideal gas milage. Founded in 1999 in SoCal, aFe continues to raise the bar and keep your engine well aspirated!

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we ship worldwide!

Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

+ FREE GROUND SHIPPING ON U.S. ORDERS OVER $99
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Have a question? Ask an Expert!

Finding the best parts can be tricky

- but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

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1 (800) 959-4304
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Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

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Matt Farah

The Smoking Tire / The Drive

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This is an awesome new site where enthusiasts can get together and figure out what products work best on their ride.

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