aFe BladeRunner Hot-Side Charge Pipe – BMW Z4 M40i (G29) B58

OVERVIEW

The aFe BladeRunner Hot-Side Charge Pipe replaces the flimsy OEM plastic charge pipe on the B58-powered Z4 M40i — a known boost-leak and failure point — with TIG-welded, mandrel-bent aluminum. Running from the turbo compressor outlet to the intercooler inlet, it steps up to a 2-1/2" → 3" diameter for smoother, less restrictive flow and reliable boost holding on stock and upgraded setups. Available in a black or blue wrinkle powder-coat finish.

SPECS

• Hot-side charge pipe — turbo compressor outlet to intercooler inlet
• TIG-welded, mandrel-bent aluminum tubing, 2-1/2" → 3" transition
• Replaces the failure-prone OEM plastic charge pipe and eliminates boost leaks
• Wrinkle powder-coat finish — Black or Blue
• 5-ply polyester-reinforced silicone couplings
• Stainless-steel spring-loaded T-bolt clamps
• Billet aluminum factory-style quick-connect adapter with O-ring seal
• 1/8" NPT port for a sensor or water-methanol injection
• Not CARB compliant; not for sale or use in California

PARTS INCLUDED

• Aluminum hot-side charge pipe
• 5-ply silicone couplings
• Stainless-steel T-bolt clamps
• Billet quick-connect adapter with O-ring
• Mounting hardware

TECH RESOURCES

• Installation Instructions (PDF)
• Not CARB compliant — not available for sale or use in California

PART NUMBER

• Black — 46-20408-B
• Blue — 46-20408-L

VEHICLE APPLICATIONS