The 4 Best Long Tube Headers for 5.3 Silverado
2021-5-20 · 4-Tube Steel Long Tube Exhaust Headers (D326) by Doug's Headers®. Primary Tubing Diameter: 1.875'. Collector Outlet Diameter: 3.5'. Color: Silver. Header Coating: Ceramic. Header Style: Long Tube. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and ...
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