The PRV-I-2400-1SDBV4 is a single-stage, internal return pressure relief valve built for LLY, LBZ, LMM, and 6.7 style diesel fuel systems operating at 2400 bar. The internal return design keeps installation clean and straightforward by eliminating the need for external return line modifications, integrating directly into the factory fuel rail. Rated at 2400 bar, this valve steps up from the 2200 bar variant to handle more aggressive builds including heavily tuned Duramax and Cummins 6.7 platforms running upgraded CP3 pumps, performance injectors, or compound turbo setups that demand higher fuel rail pressure regulation and bulletproof overpressure protection.