Compatibility: Compatible with LS1 Cathedral Port Cylinder Head to LS3 LSA ZL1 CTS-V
Adapts ANY Cathedral Port heads to Rectangle Port intakes, including superchargers/blowers (excludes LS7 raised-port intakes)
Construction: Machined from 6061-T6 aircraft-grade billet aluminum for durability and 3x normal pressure resistance
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Corrosion-resistant with precise 1/2" thickness for optimal sealing Easy Installation: 551316 Direct bolt-on design with no modifications needed. Ensures proper alignment for boosted or NA setups
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Additional Information
First Listed on Newegg
February 26, 2026
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Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.