High Flow Rectangular Port LS3 Cylinder Head 821 Casting 257cc Intake Runner for Camaro SS Racing Upgrade & Engine Swap Build

OEM Experience & Direct Supply:Direct supplier to major engine manufacturers and OEM automotive parts manufacturers. All products are manufactured to strict OE standard specifications for precise fit and reliable performance.

Lightweight & High-Strength Aluminum Alloy:Made from premium aluminum alloy A356-T6 with T6 heat treatment, approximately 30% lighter than traditional cast iron engine parts, helping reduce fuel consumption while maintaining high tensile strength (≥220MPa) and excellent heat dissipation.

Excellent Heat Dissipation & Thermal Management:Optimized coolant channel design ensures uniform and efficient heat dissipation, preventing localized overheating and thermal fatigue. Extends engine service life under extreme operating conditions.

Precision Casting & CNC Machining:Advanced precision casting (investment casting / die casting) combined with 5-axis CNC machining guarantees tight dimensional tolerances (±0.005mm), dense internal structure, and superior wear resistance. Flatness control ensures leak-proof sealing.

100% Dimensional & Leak Testing:Each piece undergoes 100% CMM dimensional inspection, pressure testing, and helium leak testing to ensure zero leakage risk after installation. Full traceability per IATF 16949 requirements.

Certified Quality Management System:IATF 16949 and ISO 9001 certified factory. Stable quality meets stringent requirements of both OEM automotive parts buyers and aftermarket distributors. Supported by comprehensive test reports.

Our company is established in 2010, is a professional manufacturer of engine cylinder heads and a recognized OEM supplier to leading Chinese automakers including Chery, Changan, and BYD. With years of experience in supporting mainstream automotive brands, we bring proven quality and reliability to every product we manufacture.

Our products have been exported to markets across Southeast Asia, the Middle East, South America, and Europe, serving clients who demand high-performance engine components built to OEM standards.

We aim to provide our customers with cost-effective cylinder head solutions, superior casting quality, and consistent dimensional accuracy,all designed to enhance engine performance and reduce maintenance costs.

What we offer:

Strict quality control from casting to finishing, backed by OEM-grade systems

Competitive factory-direct pricing

Advanced machining and testing equipment

Experienced engineering and production team

Responsive and clear communication

Flexible OEM & ODM services to meet custom specifications

Main products

Cooperative brand

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