Note: This system is not CARB exempt at this time and is not legal for sale in California or for use on vehicles registered with the California Department of Motor Vehicles.
OVERVIEW
The aFe POWER BladeRunner cold-side charge pipe replaces the restrictive factory cold-side intercooler tube on N55-powered F-chassis BMWs fitted with the automatic transmission. aFe reports maximum gains of +13 horsepower and +13 lbs. x ft. of torque, with the pipe outflowing the factory intercooler tube by 18%.
The tube is constructed of 2-1/2" to 3" mandrel-bent aluminum and powder-coated wrinkle-black for heat and corrosion resistance. Smooth-transition mandrel bends reduce turbulence, which increases horsepower and torque while lowering exhaust gas temperatures, and the high-temp wrinkle-black coating insulates the tube from engine heat. Two 1/8" NPT ports are provided for pressure sensors or water-methanol injection.
OE-style throttle body and intercooler quick connects are machined from 6061-T6 billet aluminum so the pipe retains factory connection points, and a heavy-duty 5-ply polyester reinforced silicone hump coupling with premium stainless steel clamps delivers a leak-free seal. The kit works with the OE intercooler and includes all necessary hardware. A laser-cut aluminum aFe POWER logo plate is welded on for an aggressive look.
SPECS
- Maximum gains: +13 HP and +13 lbs. x ft. of torque
- Outflows the factory intercooler tube by 18%
- Transmission: automatic transmission applications only
- Tubing: 2-1/2" to 3" mandrel-bent aluminum
- Finish: high-temp wrinkle-black powder coat for heat and corrosion resistance
- End connections: OE-style throttle body and intercooler quick connects machined from 6061-T6 billet aluminum
- Ports: two 1/8" NPT ports for pressure sensors or water-methanol injection
- Coupling: 5-ply polyester reinforced silicone hump coupling
- Clamps: premium stainless steel
- Compatible with the OE intercooler
- Welded-on laser-cut aluminum aFe POWER logo plate
- Emissions: not CARB exempt; not legal for sale or use in California
PARTS INCLUDED
- Intercooler tubes (x2)
- Silicone hump coupling (x1)
- Stainless steel clamps (x2)
- O-rings (x2)
- Screws (x2)
- Port plugs (x2)
TECH RESOURCES
Required Extras
- None. aFe Power specifies no additional hardware for this part — the coupling, clamps, o-rings and mounting screws are all supplied and the OE intercooler is retained.
- Installer supplies: standard metric hand tools, Torx drivers, and a jack and jack stands or a lift for front underbody access.
Installation
PART NUMBER
- 46-20239-B — automatic transmission
- 46-20237-B — the equivalent aFe cold-side tube for manual transmission cars, available as aFe Cold Side Charge Pipe (Manual) 46-20237-B
VEHICLE APPLICATIONS
| Make / Model | Chassis | Engine | Years |
|---|---|---|---|
| BMW 335i | F30 | N55 3.0L Turbo I6 | 2012–2015 |
| BMW 335i xDrive | F30 | N55 3.0L Turbo I6 | 2013–2015 |
| BMW 335i GT xDrive | F34 | N55 3.0L Turbo I6 | 2014–2015 |
| BMW M235i | F22 / F23 | N55 3.0L Turbo I6 | 2014–2016 |
| BMW M235i xDrive | F22 / F23 | N55 3.0L Turbo I6 | 2015–2016 |
This is the automatic-transmission version. aFe's published fitment list covers the models above; if your car is an F32/F33 435i or a manual-transmission car, confirm the correct part with Speed Logic before ordering.