Supertech Mitsubishi 4G63/4G63T Inconel Exhaust Valve - +1mm Oversize - Set of 8

Supertech Mitsubishi 4G63/4G63T Inconel Exhaust Valve - +1mm Oversize - Set of 8

Marsoni

M251S

$126.97

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

Supertech Mitsubishi 4G63/4G63T Inconel Exhaust Valve - +1mm Oversize - Set of 8Supertech Mitsubishi 4G63 4G63T Inconel Exhaust Valve +1mm Oversize Set of 8

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Don’t get me wrong it’s not a horrible product but these wires have an extreme amount of resistance to them, and once they get hot they drop voltage drastically. It was nice it came with a bunch of eyelets and made it easy to assemble but unfortunately once they were over 100F temp (live in Florida so cars get way hotter than that on the inside) the voltage would go from a normal 12.5-13.5v all the way down to 8v. Partially my fault I did not notice they were CCA wire instead description, would not recommend for automotive use.

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Reviewed in the United States on June 25, 2025

Verified Purchase

Freddy

Omaha, US

★★★★★ 5

Good price works great

Great product

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Reviewed in the United States on May 21, 2026

Verified Purchase

Chris Crittenden

Birmingham, US

★★★★★ 5

Amplifier

Works good

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Reviewed in the United States on April 29, 2026

Verified Purchase

Shawn

Port Orchard, US

★★★★★ 1

Low quality. Recommend something from a better brand.

Low quality. Seemed fine until the first one I ordered one of the terminals broke off with very little tightening force. The replacement i had ordered worked for a few days then quit working altogether. Overall disappointed.

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Reviewed in the United States on April 8, 2026

Verified Purchase

Ailyn

Dallas, US

★★★★★ 5

Bueno

Lo recomiendo

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Reviewed in the United States on March 21, 2026