KING MB509HP-030 Bearings

( Brand: King ), ( Part Type: Bearing ), ( Manufacturer Part Number: MB509HP-030 )

Review KING Sbc Chevy Main Bearings fits 400

Introducing the King KMb509HP-030 Chevy 400 Bearings, a high-performance upgrade for your engine that delivers superior durability and precision. These bearings are specifically designed for Chevy 400 engines and are engineered to provide exceptional reliability and reduced friction.

The King KMb509HP-030 bearings are manufactured using the finest materials and advanced manufacturing processes. The bearing shells are made from heat-treated, chrome-molybdenum steel, providing exceptional strength and resistance to fatigue. The rolling elements are made from high-carbon, chrome steel, ensuring superior load capacity and long-lasting performance.

These bearings feature a precision-machined surface finish, ensuring a perfect fit and minimal clearance. The surface finish also reduces friction, leading to improved engine performance and reduced heat generation. The bearings are also pre-lubed with high-quality synthetic oil, ensuring that they are ready to install and run right out of the box.

The King KMb509HP-030 Chevy 400 Bearings are also designed to meet or exceed OEM specifications. They are interchangeable with OEM bearings, making them a direct replacement for worn-out or failed bearings. Installing these bearings in your Chevy 400 engine will help ensure that your engine runs smoothly and efficiently, providing you with reliable performance and peace of mind.

In summary, the King KMb509HP-030 Chevy 400 Bearings are a high-quality, performance upgrade for your engine. They are manufactured using the finest materials and advanced manufacturing processes, ensuring superior strength, durability, and precision. These bearings are a direct replacement for OEM bearings and offer improved performance, reduced friction, and long-lasting reliability. Upgrade your Chevy 400 engine with these premium bearings and enjoy the benefits of improved performance and peace of mind.

Buying Chevy 400 engine bearings, specifically the King MB509HP-030 bearings, comes with several pros and cons that every engine builder or vehicle owner considering this purchase should take into account.

1. High-Quality Material: King bearings are known for their high-quality materials. The MB509HP-030 bearings are made from chrome steel alloy, which is resistant to wear and tear, providing increased durability and longevity.

2. Precision Machining: These bearings undergo precise machining to ensure they fit perfectly in the engine and provide a smooth operating surface.

3. Reduced Engine Noise: The use of high-quality materials and precision machining results in a reduction in engine noise, providing a quieter and more comfortable driving experience.

4. Increased Engine Performance: The precision machining of these bearings ensures that the engine parts move smoothly and efficiently, leading to increased engine performance.

5. Wide Application: These bearings are suitable for use in various applications, including racing, performance, and daily driving.

1. Cost: King bearings, including the MB509HP-030 bearings, are more expensive than OEM (original equipment manufacturer) bearings. This may not be a viable option for those on a tight budget.

2. Installation: Installing bearings, especially in high-performance applications, can be a complex process that requires specialized tools and knowledge. This can add to the overall cost and time investment.

3. Availability: King bearings may not be readily available at local automotive stores or repair shops, requiring customers to order online or through specialized distributors.

The MB509HP-030 King bearings offer several advantages, including increased durability, reduced engine noise, improved engine performance, and wide application. However, they also come with some disadvantages, including higher cost, installation complexity, and limited availability.

If you are an engine builder or vehicle owner seeking high-performance bearings for your Chevy 400 engine and have the budget and resources to invest in them, the MB509HP-030 King bearings could be an excellent choice. These bearings offer superior quality and performance, resulting in a quieter, more efficient, and longer-lasting engine. However, if you are on a tight budget or are not comfortable with the installation process, you may want to consider purchasing OEM bearings instead.

Details:

All bearing companies solve crankshaft journal wear by supplying oversized bearings. King has removed concerns about inconsistent shell to bearing wall thickness by the use of statistical control methods keep very limited variation. THE BENEFITS OF USING KING ENGINE Brainstorm-metal vs. Because it is an alloy, maintains its properties throughout entire depth, delivering consistent and reliable performance.

Bi-metal Bearings. Engine bearings are very critical items, and must be of high quality. Superior eccentricity and crush relief values for a better oil wedge less journal wear. Here is where quality, design, and value all come together.

They don't address any of the critical factors such as metallurgy and design. Few offer discounts on shipping such as this. The same metallurgical alloy is used in Kings street bearings that High Performance bearings, so the regular bearing user gets advantage of developed and race engines. No more trying different bearings within a set to get the right fit.

For technical info on this product, refer to the bearing manufacturers web page. When running 4340 forged crankshafts, this is NOT the bearing recommended, as HP series main bearings have a different design due to built in radius on journals of most crankshafts. More than half of engine bearing failures are caused by metallic particles which scratch crank journals and tear or weaken thin Babbitt overlays such as in the Teri-metal. This means added protection against localized overheating due to MI's-alignment, detonation, overloading, loss of coolant, etc.

KING MAIN BEARINGS FOR SBC CHEVY 400 MB509HP-030. Less taper across the bearing face, meaning superior wall stability, a more parallel and better oil film development. However, King went two steps further with the development of Max Flange and Pro. Molecular material is used exclusively by King.

Greater conform ability means fewer bearing failures. Crankshaft grinder does not need to grind cranks fat or thin compensate for bearing variations. Most products purchased late in the day will not be shipped until next. The benefits of tight control wall thickness tolerance are: Improved consistency bearing to journal clearance.

King bearings are outstanding in quality and unique design. Bearing-to-journal clearances on main and connecting rod bearings can be affected by several variables, all of which the engine builder must try to control. Includes Main Bearing: MB509HP-030Main Bearing Type: Replacement Construction: Bi-Metal Chambered/Narrowed No Coating: None. It is an alloy of aluminum, tin, copper and several other elements.

Engine Bearing Kit model or Series: HP-Series Make: CHEVY Engine: 4 00. Our sales staff has limited technical knowledge on this product and are usually unable to answer many of the questions asked.

part #: mb509hp030 prices

• $61.99-$96.30

specifications engibearing:

• for models: 400
• for makes: Chevy
• brand: King
• part type: Bearing
• manufacturer part number: MB509HP-030

returns engibearing:

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

payments engibearing:

• credit card: Diners-club
• wallet: Paypal
• other

offer engibearing:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: October 20, 2025

seller engibearing:

• rating: 99.8%
• # reviews: 211976
• city: Kingsport, Tennessee

shipping engibearing:

• cost: $10.00
• transit: 3-7 Days
• class: Expedited
• service: FedEx 2Day
• carrier: FedEx
• type: Fixed

general engibearing:

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

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