Aftermarket Car Parts -Private Label Mfg

Private Label Mfg. B Series Tri-Y Big Tube Header B18 B20

Private Label Mfg. B Series Tri-Y Big Tube Header B18 B20 - Main image
$392.7 $595 In stock

Category: Motor Vehicle Parts

The PLM Private Label Mfg. B-Series Tri-Y Big Tube Header is the best-selling B-Series header on the market, trusted for over 15 years. Designed with a true step-up exhaust system, this long-tube header delivers significant low- to mid-range power gains, making it ideal for performance enthusiasts. Featuring a two-piece slip-fit design, it ensures a seamless fit for maximum horsepower. For the best value and proven performance, buy the original PLM Big Tube header and unleash big power.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Samuel ★★★★★

The step-up tube design really opened up my B18's mid-range, and the welds are clean all the way through. Bolted up without much hassle after a quick test fit, and the car sounds meaner than ever.

Avery ★★★★★

I was worried about fitment with my B20 swap, but these bolted right up to the factory studs without any modifications. The step-up primary tubes are clearly well-engineered—definitely feels like it pulls harder up top now.

Hazel N. ★★★★★

The step-up tube design really woke up my B20’s mid-range, and the welds are clean all around. Took about two hours to install with no fitment issues on my car.