10 Best King Bearings 2026

⚡ Quick Verdict

📋 How We Evaluated

Evaluations focus on material quality, load-bearing capacity, and compatibility with specific engine platforms. Performance metrics include durability under high RPM and resistance to friction. Value is assessed based on build consistency and vendor reliability.

Part Number	MB5013XP
Application	LS1, LS6, LS3
Use Case	High-load racing
Origin	Israel

What We Found

The King MB5013XP main bearing set is a premier choice for high-load, long-duration racing applications. Designed for LS1, LS6, and LS3 engines, these bearings excel in environments like circle track or off-road racing. The construction utilizes advanced materials that provide exceptional load-carrying capacity.

Each bearing is manufactured in Israel to strict tolerances, ensuring a perfect fit for high-performance blocks. The set handles the stresses of high-output engines while maintaining consistent oil pressure. Its design specifically addresses the needs of engines that operate under extreme conditions for extended periods.

The weight and dimensions reflect the robust nature of these performance parts. Builders trust this set to provide the durability required for competitive racing environments where engine failure is not an option.

Who It’s For

This set is perfect for race engine builders and performance enthusiasts working on LS platforms. It is designed for those who push their engines to the limit in competitive racing. It provides the necessary insurance for high-stress applications that require maximum bearing durability.

Application	Big Block Chevy
Coating	Polymer-based
Type	Main Bearing Kit
Origin	Israel

What We Found

These coated main bearings for Big Block Chevy engines incorporate a polymer-based lubricant. This specialized coating enhances anti-friction properties, which is crucial for high-performance rotating assemblies. The bearings are designed to withstand the significant loads of a big block engine.

The package includes a complete kit, making it easy to outfit an entire crankshaft. Being manufactured in Israel, these bearings benefit from advanced production techniques and strict quality control. The coating helps during cold starts by providing a protective layer before oil pressure builds.

It also provides extra insurance during high-load conditions where oil film might be stressed. This is a sophisticated solution for builders who want to maximize the lifespan and efficiency of their engine internals.

Who It’s For

These bearings are best for builders of Big Block Chevy engines who want the added protection of a specialized coating. It is perfect for those who take their engines to the track or run high-output setups. The value lies in the extended durability provided by the anti-friction layer.

Part Number	CR 807XPN
Type	Rod Bearing
Series	XPN Performance
Precision	High

What We Found

The CR 807XPN rod bearing set represents a focused engineering effort for specific high-performance applications. These bearings feature high-strength materials designed to manage the increased forces found in performance engines. The construction prioritizes load distribution to prevent premature wear during high-RPM operation.

Each bearing undergoes strict quality control to ensure uniform thickness across the set. This consistency helps maintain optimal oil clearances for the life of the engine. The XPN designation often indicates a more robust construction compared to entry-level alternatives.

Builders appreciate the precision fit that minimizes the need for extra adjustments during assembly. The durable finish helps maintain stability even under demanding conditions. It is a highly regarded component for those who do not want to compromise on internal engine integrity.

Who It’s For

This set is for serious performance builders who demand high-quality rod bearings for their engines. It suits those who prioritize durability and tight tolerances during assembly. It is an excellent choice for enthusiasts building engines for consistent, high-performance use.

Part Number	MB5013XP STDX
Engine	LS Platform
Size	STDX
Origin	Israel

What We Found

The MB5013XP STDX main bearing set is a precision-engineered component for LS engine platforms. The STDX designation indicates a specific size variation that helps builders achieve ideal oil clearances. These bearings are manufactured in Israel and adhere to high standards of quality.

The package is compact and ensures the parts remain protected until they are installed. Builders appreciate the consistency of these bearings, as they help maintain stable oil pressure across all main journals. The design focuses on load distribution, which is critical for the long-term health of the crankshaft.

This product is a reliable choice for those performing precision rebuilds where every thousandth of an inch matters for engine performance and durability.

Who It’s For

This set is for experienced engine builders who need specific clearance adjustments for their LS engine. It is ideal for those who have measured their journals and know exactly what size they need. It suits enthusiasts who demand precision in their assembly.

Application	GM LS V8
Components	Rod and Main Set
Size	Standard
Compatibility	4.8L, 5.3L, 6.0L

What We Found

This set covers main and rod bearings for popular GM LS engines. It provides standard sizing for factory-spec parts. You must message the seller early about oversized needs to avoid fitment issues. The supplier can substitute Clevite or ACL if King inventory runs low.

This helps if you are finishing a project on a deadline. The bearings use robust materials for modern V8s. Getting both rod and main bearings in one box simplifies the ordering process.

Who It’s For

This set suits engine builders working on LS-based GM platforms who need a reliable, all-in-one solution. It works best for those performing standard rebuilds or budget-conscious performance upgrades. The ability to request specific sizes makes it ideal for builders who have already measured their crankshaft journals.

It serves as a practical choice for mechanics who prioritize getting a complete set of bearings quickly.

Part Number	CR 807SI
Size	Standard
Weight	0.319 kg
Origin	Israel

What We Found

The CR 807SI rod bearing set offers a reliable solution for builders seeking standard-sized components with high-quality manufacturing. Originating from Israel, these bearings meet rigorous standards for precision and material integrity. The set is well-packaged to prevent surface damage during shipping.

With a weight of approximately 0.3 kilograms, these bearings are easy to handle and install. The design prioritizes consistent oil clearance, which is essential for engine longevity. These bearings provide a stable platform for the connecting rods, reducing friction during operation.

The fitment is accurate, making the assembly process smoother for the builder. This set is a great choice for those who need a dependable, standard-size rod bearing for their engine project.

Who It’s For

This set is ideal for hobbyist builders and mechanics who need a high-quality standard-size rod bearing. It is well-suited for general rebuilds where the engine is kept close to factory specifications. The reliability makes it a great choice for daily drivers.

Part Number	MB 557SI
Type	Main Bearing
Origin	Israel
Weight	0.499 kg

What We Found

The MB 557SI main bearing set demonstrates the quality manufacturing associated with King’s Israeli production facilities. These bearings are designed to provide a stable foundation for the crankshaft in compatible engine platforms. The package dimensions ensure that the components arrive safely and without damage.

With a weight of about 0.5 kilograms, the set is easy to handle during the installation process. The engineering focuses on providing a balance between friction reduction and structural support. This set works well for standard rebuilds where reliability is the primary goal.

The fitment is vehicle-specific, ensuring that the bearings align perfectly with factory housings. Builders can rely on these components to maintain proper oil film thickness throughout the engine’s service life.

Who It’s For

This main bearing set is intended for mechanics and builders performing routine engine overhauls. It works best for those who need a dependable, factory-spec replacement part. It is suitable for street cars where long-term reliability is more important than extreme race performance.

Application	SBC Chevy
Undersize	.030 inch
Compatibility	305, 327, 350
Note	Must verify size before order

What We Found

This bearing set provides a solution for SBC Chevy engines that have had the crankshaft turned down by .030 inches. It is essential to communicate with the seller regarding potential size differences between rod and main bearings. The set is compatible with classic 305, 327, and 350 engines.

Because it is an undersized part, it is a specialized item for engines that have undergone significant machining. The quality of the bearings is consistent with King’s reputation for reliability in the aftermarket. Builders must ensure that their machinist has confirmed the .030-inch undersize specification before ordering.

This set is a critical component for restoring an engine with a worn or machined crankshaft that would otherwise be unusable.

Who It’s For

This set is for builders who are saving a crankshaft that has been machined .030 inches under standard size. It is perfect for those performing major engine overhauls on classic Chevy V8s. It is the right choice when standard bearings no longer fit.

Application	SBC Chevy
Undersize	.010 inch
Compatibility	305, 327, 350
Note	Custom sizing options available

What We Found

These main and rod bearings serve SBC Chevy engines that require a .010-inch undersize due to crankshaft machining. The set is compatible with 305, 327, and 350 variants. The manufacturer emphasizes the importance of selecting the correct size before completing the purchase.

This product is ideal for engines undergoing a light-to-moderate rebuild where the crankshaft has been turned slightly to clean up wear. The quality of the bearing material ensures a long service life once installed properly.

Builders must verify if their rods and mains require different undersize values, as the seller can accommodate these needs. This level of service is helpful for those who have a mix of machined parts in their rotating assembly.

Who It’s For

This set is for builders who have had their crankshaft ground .010 inches under standard size. It is perfect for those performing a thorough rebuild on a Small Block Chevy. It is the necessary component for achieving proper clearance after machining.

Engine	SBC Chevy
Journal	2.100 inch
Application	305, 327, 350
Size	Standard

What We Found

These crankshaft bearings provide a reliable replacement for Small Block Chevy engines including the 305, 327, and 350 models. The design specifically targets the 2.100-inch large rod journal crankshafts. Users must select the required size before adding the product to their cart to ensure correct clearance.

The construction meets standard expectations for durability in street-driven performance engines. The bearings fit precisely into original equipment housings without requiring extensive modifications. This product simplifies the search for builders working on classic American V8 architectures. The materials withstand typical daily driving and occasional spirited use.

It remains a staple for those restoring or upgrading vintage Chevy powerplants. The manufacturer focuses on consistency and fitment, making it a dependable option for traditional engine assembly projects.

Who It’s For

This product suits owners of classic Small Block Chevy engines who need standard-size replacements. It is perfect for those rebuilding 305, 327, or 350 engines with large journal crankshafts. The direct-fit nature makes it ideal for hobbyists who want to avoid custom machining or complex setup processes.

What to Look For Before Buying

Choosing the right bearings is critical for your engine’s life. You must measure your journals to find the right size. Always prioritize quality materials for high-performance use. Consider the load and usage patterns before you buy.

Check Measure Your Journals

Measure your crankshaft journals with a micrometer. Never assume you need standard bearings. Machining often requires undersized parts. Accurate measurements prevent engine failure.

Value Choose The Right Material

Select materials based on your engine’s use. Standard bearings work for daily drivers. High-performance builds need materials that handle heat. Polymer coatings help reduce friction.

Rating Check Compatibility

Verify that the bearings match your block and crankshaft. Small Block Chevy parts differ from LS parts. Always check part numbers against your specific engine.

Verify Consult Your Machinist

Consult your local machine shop. They can tell you exactly how much material was removed from your crank. Use their data to pick the right bearings.

Frequently Asked Questions

How do I know if I need oversized or undersized bearings?

You need undersized bearings if your crankshaft was machined smaller than factory diameter. Ask your machine shop for the exact dimensions.

Can I mix different brands of rod and main bearings?

It is best to stick to one brand. Different brands have different thickness tolerances. Using a matching set ensures uniform oil clearances.

What does a polymer coating do for my bearings?

Polymer coatings provide a layer that reduces friction. They help during cold starts when oil pressure is low. They add safety for racing.

How often should I replace engine bearings?

Replace bearings during any major engine rebuild. If you see metal shavings or low oil pressure, it is time for new ones.

Is it better to buy a complete kit?

Buying a kit is better. It ensures all parts are compatible and simplifies your order. It also prevents missing parts during assembly.

🎯 Final Verdict

For the highest level of performance, the King MB5013XP main bearing set is the clear choice. It offers unmatched durability for high-output LS engines and is engineered specifically for the rigors of racing.

If you are working on a Big Block Chevy, consider the coated main bearing kit instead for superior friction reduction. Regardless of your build, always measure your crankshaft before ordering to ensure the correct fit. Invest in quality parts to guarantee your engine remains reliable.

Explore the range of King Bearings options today to find the perfect fit for your project.