KING ENGINE BEARINGS MB5745SI0.25 611500580345 0.25MM 4U-GSE FA20DIT

( Brand: King Engine Bearings ), ( Engine Codes: 4u-gse Fa20 Fa20dit Fb20 ), ( Vehicle Make: Scion Subaru Toyota ), ( Manufacturer Part Number: MB5745SI0.25 ), ( UPC: 611500580345 )

Review KING ENGINE BEARINGS Main 0.25mm Fr s 86 13-20 Fa20 fits SI BRZ WRX 2015–2018

Introducing the King Engine Bearings MB5745SI0.25 SI 0.25mm bearing set, a premium solution for your Subaru BRZ, FR-S, 86, and FA20 powered WRX and STI models from the years 13-20 (4U-GSE) and 15-18 (FA20, FA20dit). These bearings are designed to deliver superior performance and durability, surpassing the original equipment bearings in numerous aspects.

The MB5745SI0.25 set includes four identical rod bearings, all with a thickness of 0.25mm. These bearings are specifically crafted for Subaru's horizontally opposed engines, ensuring a precise and snug fit. The SI designation stands for "self-insulating," which refers to the unique construction that shelters the bearing from the cooling effect of the engine oil. This feature enables the bearing to maintain optimal operating temperatures, resulting in reduced wear, improved engine efficiency, and extended bearing life.

King Engine Bearings are renowned for their exceptional quality. Each bearing is meticulously machined from high-quality, heat-treated, chrome steel, ensuring maximum strength and durability. The bearings feature a state-of-the-art micro-finish, which significantly reduces friction and wear. Moreover, the company's proprietary Babbitt coating technology is employed, providing an additional layer of protection against the destructive effects of heat and pressure.

Installing these premium bearings in your Subaru engine will yield several benefits. You can expect enhanced engine performance, improved throttle response, and increased horsepower and torque. Additionally, the bearings' superior durability will reduce the need for frequent replacements, saving you money over time.

To ensure a hassle-free installation, the MB5745SI0.25 set comes complete with all necessary hardware and detailed installation instructions. The bearings are also compatible with factory timing belts, ensuring a seamless integration into your engine.

In summary, the King Engine Bearings MB5745SI0.25 SI 0.25mm bearing set is a top-tier upgrade for your Subaru BRZ, FR-S, 86, WRX, or STI engine. By delivering improved performance, durability, and peace of mind, these bearings represent an excellent investment for any Subaru enthusiast seeking to maximize the potential of their engine.

Buying MB5745SI0.25 Engine Bearings for BRZ/FR-S/86/WRX (FA20): A Detailed Analysis

The MB5745SI0.25 engine bearings are a popular aftermarket option for various Subaru models, including BRZ, FR-S, 86, and FA20-powered WRX and WRX STI. Here's a balanced assessment of the pros and cons of buying these bearings for your vehicle.

1. Enhanced Durability: MB5745SI0.25 engine bearings are known for their robustness and ability to withstand high engine temperatures and loads, making them an ideal choice for performance applications and those seeking extended engine life.

2. Improved Engine Response: Upgrading to these high-performance bearings can lead to smoother engine operation and quicker response times, enhancing overall driving experience.

3. Reduced Engine Noise: The MB5745SI0.25 bearings are designed to minimize engine noise, resulting in a quieter and more refined driving experience.

1. Cost: These aftermarket bearings can be more expensive than OEM alternatives, making them a significant investment for some.

2. Installation Complexity: Installing aftermarket engine bearings can be a challenging task, especially for those without mechanical experience. It is recommended to have them installed by a professional mechanic to ensure proper fitment and function.

When considering the purchase of MB5745SI0.25 engine bearings for your BRZ, FR-S, 86, or FA20-powered WRX or WRX STI, it's essential to weigh the advantages against the potential drawbacks. If you prioritize durability, performance, and reduced engine noise, these bearings may be a worthwhile investment. However, if you're on a budget or unsure of your mechanical abilities, you may want to stick with OEM alternatives or consult a professional for advice.

If you decide to pursue the MB5745SI0.25 engine bearings, it is highly recommended to have them installed by a professional mechanic to ensure proper fitment and function. Additionally, consider the potential cost savings from reduced engine wear and improved performance over time.

Details:

Aluminum based SI bearing. Number of Bearings in set 5, Note: Car Make: Scion Subaru Toyota, model: WRX VA / BRZ FRS FR-S 86 XV Cross trek Cross Trek Impress, Years: 13-16 17-20 13-20 15-20 13-15 16-17 Impress 12-17, Engine: 4U-GSE FA20 FA20DIT FB20, Thickness: 0.25, Manufacturer Product Specifications These King Aluminum based SI-Series main are recommended for OE applications. K-788 Aluminum based material, strengthen by 2.5-3% Silicon, for medium load Engines or nodular cast iron crankshafts. These main Bearings are designed for aftermarket gasoline or diesel Engine rebuilding and performance Engines with OE crankshafts.

K-788 upper and lower. King SI Main Bearings 0.25mm for BRZ FR-S 86 13-20 4U-GSE FA20 WRX 15-18 FA20DIT. These King SI-Series main Bearings have an improved crankshaft finish for reducing microscopic ferret peaks on improperly ground or polished nodular cast iron crankshafts. Useful Links.

These King SI-Series main Bearings feature improved oil clearance to reduce wear and increase Engine life, which in turn reduces operating noise, vibration, excess flow.

part #: mb5745si025 prices

• $111.36-$239.07

specifications engibearing:

• for models: Si, Brz, Wrx
• for years: 2015-2018
• brand: King Engine Bearings
• engine codes: 4u-gse Fa20 Fa20dit Fb20
• vehicle make: Scion Subaru Toyota
• manufacturer part number: MB5745SI0.25
• upc: 611500580345

payments engibearing:

• wallet: Paypal
• other
• credit card: Discover

seller engibearing:

• city: Sanford, Florida
• rating: 99.7%
• # reviews: 37533

shipping engibearing:

• service: UPS Ground, UPS Next Day Air Saver
• carrier: UPS
• type: Calculated
• cost: $0.00
• class: Standard, One-day
• transit: 4-8 Days

general engibearing:

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

returns engibearing:

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

offer engibearing:

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

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