The Black Diamond 7.5 HP 2 Stage Maintenance Kit is designed to help protect your investment while maximizing the performance and lifespan of your air compressor. Tailored specifically for Black Diamond 7.5 HP two stage electric air compressors, this kit includes the essential components needed to support proper maintenance and optimal operation. When the maintenance kit is purchased within 30 days of the air compressor, it extends the pump warranty to a total of up to 4 years, doubling the standard coverage. This kit offers a simple, effective way to ensure long term reliability and added warranty protection.