Description
Part Number: AF4187-350
Aeroflow T304 Stainless Steel 4-into-1 Merge Collector (1-7/8″ to 3.5″)
Maximise exhaust gas velocity, scavenging efficiency, and overall engine torque with Aeroflow’s premium hand-ported T304 stainless steel merge collector.
Key Features
- ☑ Manufactured from high-grade T304 stainless steel for extreme durability and heat resistance
- ☑ Hand-ported internal transition smooths exhaust pulses and eliminates power-robbing backpressure
- ☑ Engineered to boost exhaust gas velocity and significantly broaden the engine’s torque curve
- ☑ 1-7/8″ (47.6mm) ID slip-in primary inlets for easy custom header fabrication
- ☑ 3.5″ (88.9mm) OD collector outlet suitable for butt welding or V-band flange connection
Technical Specifications
| Brand | Aeroflow Performance |
|---|---|
| Manufacturer Part Number | AF4187-350 |
| Collector Configuration | 4-into-1 Merge Collector |
| Material | T304 Stainless Steel |
| Primary Inlet Size | 1-7/8″ (47.6mm) Inside Diameter (ID) Slip-In |
| Collector Outlet Size | 3.5″ (88.9mm) Outside Diameter (OD) |
| Internal Construction | Hand-Ported Merge Pyramid |
What’s Included in the Box
- 1 x Aeroflow AF4187-350 Stainless Steel 4-into-1 Merge Collector (1-7/8″ ID to 3.5″ OD)
Designed specifically for track, drag, and custom high-performance engine builds, Aeroflow exhaust components deliver superior flow dynamics and rugged construction. Order your AF4187-350 merge collector from JP Racing for rapid UK delivery and dedicated technical support from our motorsport specialists.







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