The Clevite CB-663HN H-Series Rod Bearing is a high-performance engine bearing designed for demanding Gen 3 HEMI builds using compatible Callies connecting rods. Developed from Clevite’s race-proven H-Series bearing technology, the CB-663HN combines tri-metal construction, a hardened steel backing, high crush, and a thin overlay to support engines operating under increased load and RPM. Its narrowed design provides additional crankshaft fillet clearance, making it well suited to performance rotating assemblies using compatible aftermarket crankshafts and connecting rods. The H-Series design also uses a medium level of eccentricity and is manufactured without flash plating to promote proper seating in the connecting rod housing. Whether you’re assembling a naturally aspirated performance HEMI or a serious forced-induction combination, these bearings provide a proven foundation for protecting the rotating assembly.

Connecting rod bearings operate in one of the most demanding areas of any performance engine. As cylinder pressure, engine speed, and horsepower increase, the loads transferred through the connecting rod and onto the crankshaft journal become increasingly significant. Choosing the correct bearing is therefore an important part of building a Gen 3 HEMI bottom end that can reliably support the intended power level and operating range.

Clevite originally developed its H-Series performance bearings for high-stress racing applications, and the design is intended for competition engines operating in the medium to high RPM range. The H-Series features a hardened steel back and thin overlay, along with high crush for secure seating and retention. Clevite also recommends the H-Series for crankshafts with oversized fillets, where additional clearance around the crankshaft radius is necessary.

The CB-663HN uses Clevite’s tri-metal bearing construction. Published specifications identify a 2.099 to 2.100-inch shaft diameter range, 2.2247 to 2.2252-inch housing bore range, and a maximum wall thickness of approximately 0.0619 inch. The specified oil clearance range is approximately 0.0009 to 0.0030 inch. These specifications make accurate crankshaft measurement, connecting rod sizing, and final bearing-clearance verification essential during engine assembly.

For Dusterhoff Racing’s Gen 3 HEMI application, the CB-663HN is specifically offered for builds using Callies connecting rods. This makes it a useful choice when assembling a forged rotating assembly for a Hellcat, Redeye, Demon, TRX, Trackhawk, Scat Pack, or another compatible HEMI performance build. Exact compatibility is determined by the connecting rod, crankshaft journal dimensions, and required bearing clearance rather than the vehicle model alone.

These bearings can support everything from performance street builds to dedicated drag racing combinations when properly matched and installed. As with any internal engine component, bearing clearance should be measured during assembly rather than assumed based solely on the part number.

The Clevite CB-663HN H-Series Rod Bearing provides the race-developed construction and dimensional characteristics needed for serious rotating assemblies, making it a valuable component for Gen 3 HEMI builders focused on strength, consistency, and properly engineered bottom-end performance.

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Specifications & Features

• Manufacturer: Clevite
• Product Line: H-Series
• Manufacturer Part Number: CB-663HN
• Product Type: High-performance connecting rod bearing
• Construction: Tri-metal
• Bearing Back: Hardened steel
• Design: Narrowed for increased crankshaft fillet clearance
• Eccentricity: Medium
• Crush: High
• Flash Plating: None, designed for improved seating
• Coated: No
• Shaft Diameter Range: 2.099 to 2.100 inches
• Housing Bore Range: 2.2247 to 2.2252 inches
• Maximum Wall Thickness: 0.0619 inches
• Oil Clearance Range: 0.0009 to 0.0030 inches
• Maximum Published Length: 0.792 inches
• Size: Standard
• Dusterhoff Racing Application: Gen 3 HEMI engines using compatible Callies connecting rods
• Quantity: Sold individually. Eight are required for a complete V8 engine set.
• Package Dimensions: 4 x 4 x 2 inches
• Listed Shipping Weight: 2 lbs.
• Color: Metallic bearing finish; specific color not listed by manufacturer
• Vehicle Compatibility: Gen 3 HEMI performance applications using the appropriate Callies connecting rods and compatible crankshaft journal dimensions
• Year Compatibility: Dusterhoff Racing lists model years 2003 through 2024
• Recommended Uses: Forged engine builds, performance street engines, drag racing, high-RPM combinations, supercharged builds, turbocharged applications, and other high-performance Gen 3 HEMI rotating assemblies
• Installation Note: Crankshaft journal dimensions, connecting rod housing bore, oil clearance, and overall bearing compatibility should be measured and verified during engine assembly.