KING M557U Undersize Performance Connecting Rod Bearing Set 4-PACK 0.010

( Brand: King ), ( Type: Connecting Rod Bearing Set ), ( Manufacturer Part Number: M557U ), ( Material: Aluminum ), ( Universal Fitment: No )

Review KING Undersize Performance Connecting Rod Bearing Set 4-pack 0.010 Inch

Introducing the King Engine Bearings M557U Undersized Performance Connecting Rod Bearing Set, a high-performance solution for your engine upgrade needs. This set includes four (4) individually boxed, 0.010-inch oversized bearing assemblies.

The M557U connecting rod bearings are specifically designed for high-performance applications, featuring a unique, micro-finished surface that reduces friction and increases durability. The undersized design provides improved clearance for high-performance stroker engines or custom builds, ensuring proper fitment and clearance.

These bearings are made from premium materials, including a high-quality steel backing plate and a brass bushing. The brass bushings are impregnated with copper, ensuring superior load distribution and longevity. The bearings also come with a chamfered leading edge, which provides improved oil flow and contributes to smoother operation.

The M557U connecting rod bearings are precision machined to ensure a perfect fit and are compatible with most small block Chevy, Ford, and Chrysler engines. They are also suitable for use in high-horsepower applications, making them an excellent choice for performance enthusiasts seeking improved power and reliability.

Installation of these bearings is straightforward, with no special tools required. Each bearing comes pre-loaded with the appropriate amount of clearance, ensuring proper installation and ease of use.

In summary, the King Engine Bearings M557U Undersized Performance Connecting Rod Bearing Set is a high-quality, durable solution for your engine upgrade needs. With their unique micro-finished surface, undersized design, and compatibility with various engine platforms, these bearings are an excellent investment for any performance enthusiast seeking improved power, reliability, and durability.

Pros and Cons of Buying King M557U Undersize Performance Connecting Rod Bearing Set 4-Pack (0.010)

a. Enhanced Performance: King M557U undersize performance connecting rod bearings are designed to provide increased clearance for high-performance engines, allowing for greater engine breathing and improved power output.

b. Superior Quality: These bearings are made from high-quality materials, ensuring durability and reliability, even under the extreme conditions of high-performance racing applications.

c. Reduced Engine Noise: The smaller size of these bearings can help reduce engine noise by allowing for a tighter clearance between the crankshaft and connecting rods, reducing the slop and play that can contribute to noise.

a. Premium Price: King M557U undersize performance connecting rod bearings are more expensive than standard bearings due to their high-performance design and materials.

b. Installation Complexity: Installing these bearings can be a more complex process than installing standard bearings, as they require precise measurement and installation to ensure proper clearance and performance.

The King M557U undersize performance connecting rod bearing set 4-pack (0.010) is a high-performance upgrade for engines that require increased clearance and improved power output. While they come with a premium price and a more complex installation process, the benefits of enhanced performance, superior quality, and reduced engine noise make them a worthwhile investment for those seeking to optimize their engine's capabilities.

If you are building or upgrading a high-performance engine and require the benefits of undersize connecting rod bearings, the King M557U set is a recommended choice due to its proven quality, durability, and performance advantages. However, be prepared for a more complex installation process and a higher cost compared to standard bearings.

Details:

Material: High-performance Teri-metal construction. Kings reputation for quality in motor sports and high-performance applications. Kings proprietary XP Extra Performance alloy provides superior load capacity. Special alloy composition for improved heat dissipation.

Rod bolts should be replaced when installing new bearings. Designed for high-performance automotive applications. Perfect clearance specifications for optimal oil film thickness. Enhanced fatigue resistance for racing and performance builds.

Compatible with high-performance motor oils including synthetic. Key Features: Teri-metal construction with copper lead intermediate layer. Precision machined for exact tolerances. Item Specifics: Quantity: Set of 4 connecting rod bearings complete engine set.

Size: 0.010 Undersize us. Excellent resistance to fatigue and wear in performance applications. Precision engineered for maximum durability in high-stress environments. Manufacturer Part Number: M557U.

Precision machined to exact tolerances for proper clearance. Proper measuring of crankshaft journals required before installation. Optimal oil groove pattern for superior lubrication. Groove design optimizes oil flow for better lubrication.

Silicon aluminum overlay for improved durability. High crush design ensures proper retention in connecting rods. Ensure oil clearances are within manufacturers specifications. Chambered edges to prevent damage during installation.

Suitable for street performance, drag racing, and circle track applications. King M557U Undersize Performance Connecting Rod Bearing Set - 4-Pack 0.010 Engine Bearings: condition: New. Consistent wall thickness for balanced engine assembly. Perfect for performance rebuilds with reground crankshafts.

Heat-treated backing for increased strength. Works with notorious, supercharged, and turbocharged applications. Enhanced bonding between layers prevents lamination.

part #: m557u prices

• $13.99-$128.34

specifications engibearing:

• brand: King
• type: Connecting Rod Bearing Set
• manufacturer part number: M557U
• material: Aluminum
• universal fitment: No

offer engibearing:

• options: Ship-to-home
• sold: 0
• quantity: 1
• best offers: True
• started: October 2, 2025
• availability: In Stock

returns engibearing:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

shipping engibearing:

• transit: 4-9 Days
• service: USPS Priority Mail, UPS 2nd Day Air, UPS Next Day Air, UPS Next Day Air Saver
• type: Calculated
• class: Expedited, One-day
• cost: $0.00
• carrier: USPS, UPS

seller engibearing:

• city: Independence, Missouri
• rating: 99.4%
• # reviews: 4016

general engibearing:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: New

payments engibearing:

• credit card: Mastercard
• other
• wallet: Google-pay

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