JBA Headers 6651SJS 1-1/2" Tri-Y Long Tube Stainless Steel Header Silver Ceramic

The JBA Headers 6651SJS is a 1-1/2" Tri-Y long tube performance exhaust header constructed from mandrel-bent stainless steel with a durable silver ceramic finish. Engineered for maximum exhaust scavenging, this header delivers measurable horsepower and torque gains throughout the entire RPM range — dyno-proven by JBA's in-house testing program.

Built to exacting tolerances, the 6651SJS features JBA's signature 3/8" thick CNC laser-cut one-piece flanges that resist warping and virtually eliminate exhaust leaks. The oversized exhaust ports are sized to accommodate ported cylinder heads, making this header an ideal match for both stock and modified small-block Ford engines. O2 sensor provisions are included for compatibility with EFI applications.

Key Features:

• 1-1/2" mandrel-bent stainless steel primary tubes — maximizes flow and high-RPM efficiency
• Silver ceramic coating — heat-resistant finish for long-lasting durability and appearance
• 3/8" thick CNC laser-cut flanges — one-piece design prevents leaks caused by warping
• Patented JBA Firecone® merged collector — improves exhaust scavenging for increased horsepower and torque
• Oversized exhaust ports — accommodates ported and aftermarket cylinder heads
• O2 sensor provisions — supports EFI connections
• Maximum ground clearance design — collector placement prevents dragging on lowered vehicles
• Includes premium hardware and full installation instructions for a professional, no-leak fit

Legal for use on 1974 and older non-catalyst-equipped vehicles. Considered a replacement part per California Air Resources Board regulations, provided all emissions-sensitive components are retained. For closed-course/off-road competition use only on 1975 and newer vehicles.