Surprising Versus Cam Kit: Tough Versus Tough… Test In-Place! We were skeptical when we first unboxed the OEM Technologies 90028 Horizontal Axial Cam Replacement Pressure Washer Pump Kit. Its sleek silver finish and professional hardware packaging promised durability, and we weren’t disappointed. The 3300 PSI, 2.4 GPM model fits snugly into our gas-powered machine, with the 3/4" shaft aligning perfectly. The included siphon tube and replacement cam are flawless, reducing downtime and saving us a trip to the shop. What impressed us most was how seamlessly the kit replaces the old unit; no Cutting or Torque wrenches were needed. We tested it on both residential and light industrial tasks, and the performance holds up to the label’s claims. So far, it’s a match made in pressure-washing heaven—whether the cam kit is truly "tough versus tough" is still a work in progress, but its out-of-the-box reliability is hard to ignore.