JBA Headers 1815S-1 Chevrolet Center Exit Exhaust Header 265-400

The JBA Headers 1815S-1 is a center exit exhaust header designed for Chevrolet vehicles equipped with small block engines in the 265–400 cubic inch displacement range. JBA Performance Exhaust has been engineering high-flow headers since 1971, and this unit reflects their commitment to improved exhaust scavenging, increased horsepower, and enhanced torque over restrictive factory exhaust manifolds.

Key Features:

• Center exit design for specific chassis and engine bay configurations
• Compatible with Chevrolet small block engines from 265 to 400 cubic inches
• Mandrel-bent primary tubes for maximum exhaust flow and minimal restriction
• High-quality steel construction with a durable finish to resist heat and corrosion
• Designed as a direct performance upgrade over stock cast iron exhaust manifolds
• JBA manufacturer part number: 1815S-1

JBA headers are designed to replace factory exhaust manifolds and improve overall engine breathing efficiency. The center exit configuration routes exhaust gases through a centrally positioned outlet, which is especially suited for certain custom, race, or modified vehicle builds. This header is a proven solution for enthusiasts looking to unlock more performance from their Chevrolet small block engine.