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6L LMM Fitment Guide:
for Indmar 5
For 2011-2015 Chevrolet SILVERADO 3500HD 6
Stator Assy: 2C0-81410-00-00 / 2C0-81410-01-00
The extender has a 7/8 hex head which is the same size as most O2 sensors and it makes them easer to install not like the straight sided extenders
Chevy Small Block Roadster Sprint 1-5/8" Stainless Steel Manifold Header H8069 402 6L LMM Fitment Guide:Product Overview: 1. Exhaust headers are a key upgrade for boosting engine performance by improving airflow. Unlike restrictive factory exhaust manifolds, performance headers give each cylinder its own dedicated exhaust path, reducing back pressure and improving exhaust flow. 2. By minimizing exhaust interference between cylinders, headers help increase horsepower and torque. When paired with a high performance cold air intake and a cat back exhaust
