Supertech Block Guard for 2002+ Honda D17 Single Cam

Made from solid 6061-T6 aluminum, this block guard is designed to reinforce the cylinder walls of your 2002 and later Honda D17 single cam engine. It's a smart addition if you're planning to push your engine beyond its stock power levels, especially with forced induction like a turbo or supercharger.

The D17's cylinder walls can become a weak point under increased boost pressure, leading to potential cracking or distortion. This guard bridges the gap between the cylinders, adding structural integrity and helping to prevent those costly failures. It's a well-built piece that fits right into the water jacket area, so you'll want to ensure it's properly seated during installation, typically when the engine is apart for other work.

While it adds strength, remember that this block guard occupies space in the water jacket. It's important to properly flush the cooling system after installation to remove any debris and ensure optimal coolant flow. This is a popular modification for D17 owners looking to build a more robust engine.