The Kooks Tubular Header System with 1-7/8in primaries and 3in collectors is engineered specifically for 2019–2020 Ram 1500 trucks with the 5.7L HEMI V8. Crafted from mandrel-bent 304 stainless steel, this system is designed to support improved exhaust flow, complementing high-output builds and performance tuning. The long tube design supports efficient scavenging and reduced restriction, helping to optimize engine breathing in the mid- and high-RPM range.
The system includes oxygen sensor bungs and is configured to integrate with aftermarket or custom connection components. Designed to replace the factory manifolds, these headers are a direct bolt-on solution when paired with compatible mid-pipes or exhaust kits. Kooks’ craftsmanship ensures reliable fitment and long-term durability under thermal cycling and vibration common in truck applications.
Key Features:
Constructed from high-grade 304 stainless steel for longevity and corrosion resistance
1-7/8in primaries flow into 3in collectors with TIG-welded construction
Designed for 2019–2020 Ram 1500 trucks with the 5.7L HEMI V8 engine
Long tube layout enhances exhaust scavenging and high-RPM efficiency
Includes O2 sensor bungs to retain proper emissions equipment compatibility
Intended for use with Kooks connection pipes or custom fabricated exhaust systems
CNC-machined flanges promote a precise, leak-free seal against cylinder heads
Made in the USA and engineered for high-performance street or track builds
This header system is built to handle the rigors of upgraded HEMI powertrains while offering improved thermal and flow characteristics over restrictive stock manifolds.
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