Chry. Oil Pres. Regulato

The Chrysler oil pressure regulator from MILODON (MIL21550) is a precision engine management component engineered for high-performance Mopar B-series and RB-series engines, including the legendary 426 Hemi. This external-adjustment regulator maintains optimal oil pressure throughout the engine's operating range, protecting critical internal components from starvation during high-RPM running or excessive pressure under idle conditions. It is essential for hot rodders, drag racers, and engine builders who demand reliability and fine-tuned performance from their classic Chrysler powerplants.

This regulator uses a spring-loaded valve design that responds dynamically to engine load and speed, automatically modulating oil delivery to maintain a stable pressure curve. The external adjustment feature allows technicians to dial in the precise pressure setting required for their specific engine configuration, fuel system, and bearing clearances—critical for preventing oil starvation in high-rev racing applications or excessive film thickness losses in efficiency-critical street engines. The compact, lightweight construction (0.31 lbs) integrates seamlessly into Mopar engine bays without compromising underhood layout or thermal management.

Enthusiasts restoring or upgrading classic Mopar engines—particularly B-block and big-block RB applications—benefit most from this regulator's tuning flexibility and proven durability. Whether you are building a street cruiser, weekend warrior drag car, or show vehicle, the ability to adjust pressure ensures proper lubrication across a wide power band. Installation requires basic mechanical knowledge and compatibility with your existing oil system plumbing; consult your engine builder or shop manual for torque specs and port locations specific to your Chrysler block and year.