JBA Chevrolet 265-400 SBC Rectangle Port Header Gasket - Pair

JBA Chevrolet 265-400 SBC Rectangle Port Header Gasket - Pair

Marsoni

M251S

$44.79

Get it in 3 business days with 1 day shipping. Friday, May 29

JBA Chevrolet 265-400 SBC Rectangle Port Header Gasket - PairJBA is proud to offer accessories to aid in the fitment of your JBA exhaust product. When it comes to performance exhaust systems, most people are looking for three things: Power. Sound. Quality. JBA Exhaust Systems deliver the best of all three. While there is high demand for performance and sound, the capacity for power in a JBA Exhaust System gives us the edge. Each system is tuned to provide the best possible exhaust tone without being

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Bonded to services well, completely removed panel reverberation in my tacoma. Also really made the doors so much quieter even when closing. Very happy with the result. Used only one set on my 01 tacoma 4 door. Installed inside doors on exterior skin panel, over interior door panel access holes (sealing the door to provide backpressure to door speakers (left drains open)), roof panel, and back wall of cab. Achieved about 70% coverage and am very happy. 2 8in SKAR SVR8 at 1oh on walmart power acustic 2500 (only rated to ~800rms at 2oh, forum showed testing at 1oh worked about 1kw) in 6th order with blow through into cab. With cab gain, im over 130db between ~30 and ~50hz. This was a necessary addition!

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Reviewed in the United States on April 13, 2026

Verified Purchase

Rob Chapman

Dallas, US

★★★★★ 5

Nice and sticky

Works as it should. No complaints.

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Reviewed in the United States on May 8, 2026