Engines and Components› Cylinder Heads and Components

Chevrolet Performance

LS7 Cylinder Head 2.20" Intake Valve

$1,739.00

SKU: 12578449

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Ships by Jul 31
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Description

The GM Performance 12578449 is a new, genuine Chevrolet cylinder head engineered for high-performance LS7 engines. Specifically designed for the 2006-2013 Corvette Z06 with the LS7 LSX 8452 engine, this aluminum head is built to deliver enhanced airflow and power. This cylinder head features CNC-ported LS7-style intake ports, measuring 270cc, and 85cc exhaust ports. It is equipped with large 2.20-inch intake valves and 1.61-inch exhaust valves to maximize gas flow. The design requires 91 octane fuel for optimal performance and can sustain up to 7,000 RPM. A 58X reluctor wheel is also integrated. This cylinder head comes with a 365-day warranty from First Truck Parts, ensuring reliability and customer confidence. It is a direct replacement part, designed for straightforward installation on compatible LS7 engines.

MIA's Description

The GM Performance 12578449 is a new cylinder head designed for 2006-2013 Corvette Z06 LS7 LSX 8452 engines. This aluminum head features CNC-ported LS7-style intake ports (270cc) and exhaust ports (85cc). It has a 2.20-inch intake valve diameter and a 1.61-inch exhaust valve diameter. The head requires 91 octane fuel and is rated for a maximum RPM of 7,000. It also includes a 58X reluctor wheel.

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Specifications

BrandChevrolet Performance
Part Number12578449
CategoryEngines and Components

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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