OVERVIEW
The aFe BladeRunner hot-side charge pipe for the G29 BMW Z4 M40i (B58) replaces the factory tube between the turbo and intercooler with 2-1/2 inch to 3 inch TIG-welded aluminum for stronger flow. It uses a factory-style quick-connect adapter with an O-ring seal.
SPECS
- 2-1/2" to 3" TIG-welded aluminum, wrinkle powder-coat finish
- Hot-side (turbo-to-intercooler) charge pipe
- Factory-style quick-connect adapter with O-ring
- Finish selected at the variant level (black or blue)
PARTS INCLUDED
- Aluminum hot-side charge pipe
- Quick-connect adapter
- Silicone couplings and stainless clamps
TECH RESOURCES
Additional Parts Required
- None. aFe specifies no additional hardware for this charge pipe.
Installation
Notes
- Finish is selected at the variant level.
- Not CARB-exempt — not legal for sale or use on pollution-controlled vehicles in California.
PART NUMBER
- 46-20408-B — Black
- 46-20408-L — Blue
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | Z4 M40i | G29 | B58 3.0L Turbo I6 | 2020–2026 |

