BorgWarner 12741008000 EFR B2 74mm Turbine Housing 0.83 A/R T3 Single Scroll

The BorgWarner 12741008000 is a precision-engineered turbine housing designed specifically for EFR (Engineered For Racing) B2 frame turbochargers. This high-performance component features a 74mm turbine wheel inlet with a 0.83 A/R (area/radius) ratio, optimized for balanced spool characteristics and top-end power delivery.

Key Specifications:

• 74mm turbine wheel inlet diameter for excellent flow capacity
• 0.83 A/R ratio provides optimized balance between response and peak power
• T3 single scroll flange configuration for easy integration with standard exhaust manifolds
• Internal wastegate compatible design
• Premium cast construction with smooth internal passages for minimal flow restriction
• Factory BorgWarner quality and precision tolerances

This turbine housing is a genuine BorgWarner component built to exacting OEM standards. The T3 single scroll inlet flange is one of the most common turbo mounting patterns, making this housing compatible with a wide range of exhaust manifolds. The 0.83 A/R ratio is a popular choice for street/strip applications where quick spool-up and strong mid-range performance are priorities without sacrificing top-end flow. The internal wastegate provision allows for compact packaging and simplified plumbing compared to external wastegate setups.

Ideal for upgrading or rebuilding EFR turbocharger systems in high-performance automotive applications including road racing, drag racing, and street performance builds.