1CLLR100 Series Cushion (Double Relief) Cartridge Valve, 1650-5075 PSI (Factory Setting At 4060.00), Screw Adjustment, Pilot Ratio

Steel housing is required any time you're running pressures above 3000 psi with this cartridge. That's a hard requirement, not just a recommendation. The valve itself is rated up to 5000 psi maximum, but the housing material has to match those demands or you're asking for trouble. If your circuit runs below 3000 psi, standard machined housing works fine, but cross that line and steel is the only acceptable option.

This cushion valve requires a machined A878 cavity or housing for installation, so if that's what you had before, it should be a direct replacement. Just make sure to torque it to 44 ft-lbs.

In a motor or directional valve circuit, this double relief cushion cartridge protects both lines by relieving oil to the other line when one side over-pressurizes. It is a fast-acting poppet style and it relieves in both directions using a single cartridge, which also helps save space.