Mopar Hi-Tech Roller Lifter 383-440 426

The Mopar Hi-Tech Roller Lifter 383-440 426 by COMP CAMS is a precision hydraulic roller lifter engineered for big-block Chrysler engines seeking reliable valve train performance. Built for enthusiasts and shops rebuilding or upgrading classic muscle cars, these lifters replace stock components with modern roller technology that reduces friction and wear while maintaining OEM valve geometry. If you're serious about extracting consistent power from a 383, 440, or 426 Hemi engine, roller lifters are the foundation of a responsive, durable valve train that won't let you down.

Roller lifters operate by using a precision-machined roller on the lifter body to ride the cam lobe, rather than a flat tappet sliding against it. This design cuts friction losses and allows faster valve opening and closing without sacrificing durability—critical when running aggressive cam profiles or higher RPMs. The COMP CAMS roller lifter construction includes superior materials and tight tolerances to ensure consistent lifter preload and zero unwanted lash, eliminating the guesswork of manual adjustment. The compact 0.29 lb weight and precision dimensions ensure perfect fitment in the lifter bore without binding or excess clearance that could cause noise or premature wear.

Rebuilding a 383 stroker, 440 Magnum, or 426 Hemi demands lifters engineered for the job, and the Mopar Hi-Tech Roller Lifter 383-440 426 delivers the reliability street and strip builders expect. Installation requires a complete lifter set, proper pushrod length confirmation, and attention to block deck preparation—no shortcuts. Whether you're freshening a stock engine or maximizing output on a modified application, these roller lifters eliminate the performance ceiling imposed by flat-tappet designs and ensure your valve train operates with precision for thousands of trouble-free miles.