King MB5840XP STD XP pMaxBlack Main Bearings Chrysler/Dodge Gen 3 HEMI 5.7 6.4L

Vehicle Fitment

• 2003-2023 Dodge Ram 1500 / 2500 / 3500 (Express, SXT, SLT, Laramie, Big Horn, Rebel, RWD/4WD, 5.7L V8 HEMI)
• 2005-2023 Chrysler 300 / 300C (Base, C, Limited, S, SRT8, Touring, RWD/AWD, 5.7L/6.1L/6.4L V8 HEMI)
• 2006-2023 Dodge Charger (SE, SXT, R/T, Daytona, SRT8, SRT 392, Hellcat, Redeye, Scat Pack, RWD/AWD, 5.7L/6.1L/6.4L V8 HEMI)
• 2008-2023 Dodge Challenger (SE, SXT, R/T, T/A, SRT8, SRT 392, SRT Demon, SRT Hellcat, Redeye, Scat Pack, RWD, 5.7L/6.1L/6.4L V8 HEMI)
• 2005-2008 Dodge Magnum (SE, SXT, R/T, SRT8, RWD/AWD, 5.7L/6.1L V8 HEMI)
• 2004-2009 Dodge Durango (SXT, SLT, Limited, R/T, RWD/4WD, 5.7L V8 HEMI)
• 2007-2009 Chrysler Aspen (Limited, RWD/4WD, 5.7L V8 HEMI)
• 2005-2010 Jeep Grand Cherokee (Laredo, Limited, Overland, SRT8, 4WD, 5.7L/6.1L V8 HEMI)
• 2011-2021 Jeep Grand Cherokee (Laredo, Limited, Overland, Summit, SRT, SRT8, Trackhawk, 4WD, 5.7L/6.4L V8 HEMI)
• 2006-2010 Jeep Commander (Sport, Limited, Overland, 4WD, 5.7L V8 HEMI)
• 2014-2019 Ram 1500 (Express, SLT, Big Horn, Laramie, Rebel, Limited, RWD/4WD, 5.7L V8 HEMI)
• 2014-2021 Ram 2500 / 3500 (Tradesman, SLT, Big Horn, Laramie, Power Wagon, Limited, RWD/4WD, 6.4L V8 HEMI)

Fitment Notes

• Fits Chrysler/Dodge Gen III HEMI 5.7L (345 CID), 6.1L (370 CID), and 6.4L (392 CID) V8 engines sharing the same main journal diameter - confirm engine displacement before ordering
• Standard (STD) size - for use on crankshafts at factory main journal diameter; always measure journals before ordering
• XP Series = pMaxBlack tri-metal race construction; designed for high-performance and race applications using forged steel crankshafts under sustained high load
• Does not fit the supercharged 6.2L HEMI (Hellcat/Demon/Redeye/Trackhawk) - those engines require a separate bearing set
• Available in STDX, .026mm, +0.25mm, +0.50mm, and +0.75mm undersizes under separate part numbers
• 2023 Dodge Challenger SRT Demon 170 (6.2L supercharged) does NOT fit - 6.4L naturally aspirated Demon 392 confirmed fitment

Features

• pMaxBlack tri-metal overlay is 24% harder than conventional race bearings, rated up to 10,200 PSI load capacity
• SecureBond micro-etch adhesion process prevents delamination under high-RPM and sustained thermal cycling
• Narrowed design accommodates large-radius aftermarket and OE nodular iron crankshafts in Gen III HEMI builds
• Enlarged chamfered oil holes improve lubrication delivery under high-load race conditions
• EccentriX eccentricity profiling ensures a stable hydrodynamic oil film across all 5 main journals
• Bull's Eye Tolerance wall thickness held to ±0.0001" for consistent clearance across all 5 main journals
• Ideal for street/strip, forced induction, nitrous, and sustained race-duty HEMI builds
• Lead-free construction meets current environmental compliance standards

Specifications

• Part Number: MB5840XP
• Size: Standard (STD)
• Series: XP (pMaxBlack Tri-Metal Race Bearings)
• Engine: Chrysler/Dodge Gen III HEMI 5.7L (345 CID) / 6.1L (370 CID) / 6.4L (392 CID) V8
• Overlay Load Capacity: Up to 10,200 PSI
• Wall Thickness Tolerance: ±0.0001"
• Position: Crankshaft Main (Upper and Lower shells)
• Quantity: 5 pairs (10 shells total - full V8 main bearing set)
• Available Sizes: STD / STDX / .026mm / +0.25mm / +0.50mm / +0.75mm

Included Components

• 5x Upper Main Bearing Shells
• 5x Lower Main Bearing Shells

Product Description

The King MB5840XP is a standard-size XP Series race-grade crankshaft main bearing set engineered for the Chrysler/Dodge Gen III HEMI 5.7L, 6.1L, and 6.4L V8 engine family - one of the most widely used performance V8 platforms in modern Mopar history, found in the Charger, Challenger, 300/300C, Ram, Durango, Grand Cherokee, Commander, and Aspen from 2003 through 2023. The pMaxBlack tri-metal structure delivers 24% greater hardness over conventional race bearings with up to 10,200 PSI load capacity, making the MB5840XP the ideal race-grade upgrade over the OE-replacement SI or HP Series for builders running forged steel crankshafts, high-boost forced induction, nitrous, or sustained high-RPM race applications.

As a standard-size set, the MB5840XP fits Gen III HEMI crankshafts at factory main journal diameter. Always confirm the specific engine displacement (5.7L, 6.1L, or 6.4L) and verify the crankshaft is not the supercharged 6.2L variant before ordering. Undersized variants across multiple steps are available under separate part numbers for reconditioned crankshafts. For maximum protection in the most demanding builds, the MB5840XPC adds the factory-applied pMaxKote polymer coating over the same pMaxBlack structure.