Johnson 2326R Gen III Hemi Reduced-Travel Hydraulic Roller Lifters, Set of 16
Johnson 2326R Gen III Hemi Drop-In Hydraulic Roller Lifters
Upgrade your Gen III Hemi valvetrain with Johnson 2326R non-MDS hydraulic roller lifters. This complete set of 16 is designed for performance street, competition and high-output Hemi applications.
The reduced-travel hydraulic design and pressure-fed axle oiling support roller and axle lubrication. These drop-in lifters use factory-style lifter trays, so installation does not require conversion to a tie-bar lifter system.
Engine Compatibility
Designed for 2003-and-newer Gen III Hemi engines, including:
- 5.7L Hemi
- 6.1L Hemi
- 6.2L Hellcat Hemi
- 6.4L Hemi
Specifications
- Part number: 2326R
- Lifter type: Hydraulic roller
- Configuration: Non-MDS
- Plunger design: Reduced travel
- Recommended preload: .035" ± .010"
- Total plunger travel: .143"
- Axle oiling: Yes
- Lifter trays: Uses factory-style trays, required but not included
- Quantity: Complete set of 16
- Country of manufacture: USA
Construction and Performance Features
- Cold-forged steel lifter bodies, heat-treated for strength and wear resistance
- Precision-ground needle roller bearings
- High-chromium steel roller axles for demanding operating conditions
- Direct axle oiling for increased lubrication at the roller and axle
- Extended, precision-fitted internal pistons for consistent hydraulic operation
- Fast-acting disc-style check valves for improved control at elevated engine speeds
- Controlled oil metering to supply the rocker arms while helping maintain engine oil pressure
- Reduced plunger travel for improved valvetrain stability and response
Manufactured in the United States, with Johnson identification on the lifter bodies.
Installation and MDS Requirements
These lifters may require longer pushrods than the original equipment lifters. Measure pushrod length after mocking up the complete valvetrain. Do not assume factory pushrod length will provide the correct preload.
For engines equipped with MDS, the MDS hardware must be physically deleted and the MDS function disabled in the PCM calibration before operating with these non-MDS lifters.
Factory-style lifter trays are required and are not included.
Vehicle Applications
For the following vehicles equipped with 5.7L, 6.1L, 6.2L or 6.4L Gen III Hemi V8 engines:
- Chrysler 300: 2005–2023
- Dodge Challenger: 2008–2023
- Dodge Charger: 2006–2023
- Dodge Durango: 2004–2023
- Dodge Magnum: 2005–2008
- Dodge Ram 1500: 2003–2010
- Dodge Ram 2500: 2003–2010
- Dodge Ram 3500: 2003–2009
- Jeep Grand Cherokee: 2005–2023
- Ram 1500: 2011–2023
- Ram 2500: 2011–2023
- Ram 3500: 2011–2023
Vehicle year alone does not guarantee compatibility. Confirm engine type, MDS configuration, lifter tray compatibility, pushrod length and required preload before ordering.
Recommended Installation Procedure
- Remove the lifters from the packaging and inspect each body and roller for shipping or handling damage.
- Rotate every roller by hand and verify smooth movement without roughness, tight spots or binding.
- Wipe the lifter bodies with a clean, lint-free cloth.
- Apply clean engine oil to the lifter bodies and rollers immediately before installation. Extended soaking is unnecessary.
- Thoroughly clean the lifter bores, valley, cylinder heads and surrounding valvetrain area. Contamination entering the lifter is a leading cause of premature failure.
- Inspect rocker arms, pushrod tips, valve tips, camshaft lobes and related valvetrain components. Replace damaged or excessively worn parts.
- Install the lifters and verify pushrod length before final assembly.
- Set preload to .035" ± .010".
- For MDS-equipped engines, confirm the MDS system has been mechanically deleted and electronically disabled.
- Change engine oil and filter after approximately 50 miles of initial operation to remove assembly residue or contamination.