Premium stainless steel exhaust header manifold,designed to improve exhaust gas flow and increase horsepower and torque for BMW M3 performance models. Complete with gaskets and mounting hardware, direct bolton replacement, factory wholesale supply.

Compatible Vehicle Models：

Model	Engine	Chassis Code	Production Years
For BMW M3	Highperformance inline engine	E90 / E92 / E93 / F80 / G80	20072025

✅ Premium Stainless Steel Construction

Made of highquality stainless steel tubing with polished silver finish. Smooth mandrelbent runners reduce airflow turbulence. Precision TIG welding ensures strong joints and clean appearance. High temperatureresistant, anticorrosion and durable for longterm performance use.

✅ Optimized 421 / TriY Header Design

Equallength runner design improves exhaust scavenging efficiency. Reduces backpressure, enhances midrange torque and topend power output. Suitable for performance driving, track days and dyno tuning projects.

✅ Improved Engine Performance

Improves exhaust gas flow efficiency, helps release engine power and delivers better throttle response. Produces deeper, sportier engine sound under acceleration. Works well with upgraded downpipe, midpipe and rear exhaust system.

✅ Precise VehicleSpecific Fitment

Designed exclusively for BMW M3 performance chassis. Flange holes, runner angles, collector position and mounting points match original engine layout. Direct bolton installation without major cutting or modification.

✅ Complete Installation Kit

Package includes exhaust header manifold, exhaust gaskets, bolts, nuts and washers. All necessary mounting accessories are supplied together for convenient installation.

✅ Strict Quality Control

Each header undergoes airtightness leakage test, fitment inspection and surface quality check before shipment. Welding quality, pipe smoothness, flange flatness and thread accuracy are fully verified.

Application Scenarios

 Performance upgrade, exhaust system modification, OEM exhaust manifold replacement. Suitable for BMW M3 owners pursuing better power delivery, sporty sound and track performance. Used for street modification, dyno tuning and aftermarket racing build projects.

FAQ 

Q1: Will this header trigger a check engine light?

A: Installation may affect engine tuning and O2 sensor readings. Professional tuning is recommended after installation to ensure proper airfuel ratio and avoid fault codes.

Q2: Does this header fit all BMW M3 generations?

 A: Fitment depends on chassis code and engine type. Please confirm your exact model year, chassis code and original exhaust manifold layout before ordering.

Q3: Can I order samples before bulk purchase?

A: Yes, sample orders are supported for quality evaluation. Please contact our sales team for sample pricing and shipping cost.

Q4: What is the warranty policy?

A: Standard warranty covers manufacturing defects under normal installation and driving conditions. Damage caused by collision, improper installation, overheating or racing use is excluded. Bulk order warranty terms can be confirmed with sales.