KING BEARINGS MB3352SI-020 Flathead Engine 59A V8 .020

( Brand: King Bearings ), ( Manufacturer Part Number: MB3352SI-020 ), ( Part Type: Engine ), ( California Prop 65 Warning: False ), ( Size: .020 In. )

Review KING BEARINGS 59a Flathead Ford V8 Engine Main .020 Os fits 1939–1948

The **King Bearings MB3352SI-020** is a meticulously engineered, high-performance replacement bearing specifically designed for the iconic **1939 1948 59A Flathead Ford V8 engine**, a legendary powerplant renowned for its rugged durability and timeless charm. This precision-machined bearing is crafted from **high-grade, heat-treated steel**, ensuring exceptional strength, wear resistance, and longevity under the demanding conditions of classic engine applications. The **SI (Superior Inner Race)** designation indicates an upgraded inner race construction, which enhances load distribution and reduces friction, making it an ideal choice for enthusiasts seeking to restore or upgrade their Flathead Ford s drivetrain. With a **020** designation, this bearing is tailored to fit the **main bearing journal** of the 59A engine, providing a perfect interference fit that minimizes play and maximizes structural integrity critical for maintaining optimal compression, power output, and overall engine reliability. Whether used in a meticulously restored show car, a high-performance street rod, or a vintage race engine, the MB3352SI-020 delivers the precision and durability required to handle the stresses of modern driving while preserving the authenticity of the original Ford design. Engineered to meet or exceed OEM specifications, this bearing is a testament to King Bearings commitment to quality, offering a seamless replacement that restores performance without compromising the classic character of the 59A Flathead.

### **Pros and Cons of Buying King Bearings MB3352SI-020 (1939 1948 59A Flathead Ford V8 Engine, 020 Series)**

1. **High Quality and Durability** King Bearings are widely regarded as one of the best aftermarket bearing manufacturers, known for their precision machining, high-grade materials, and long-lasting performance. These bearings are designed to withstand the stresses of a high-performance or restored flathead Ford V8, reducing the risk of premature failure.

2. **Direct Replacement Fit** The MB3352SI-020 is a direct drop-in replacement for the main bearings in the 59A Ford V8 (020 series), meaning no modifications are required. This makes installation straightforward for those with basic mechanical skills or for shops that handle the work.

3. **Improved Performance Over OEM** While the original bearings may have worn over time, King s bearings offer smoother operation, reduced friction, and better heat dissipation. This can lead to improved engine efficiency, especially in high-RPM or forced-induction applications.

4. **Compatibility with Upgrades** If you plan to modify your engine (e.g., forced induction, high-compression heads, or performance camshafts), these bearings can handle the increased stress better than stock components. They are also compatible with modern lubricants and additives, which can further extend bearing life.

5. **Warranty and Reliability** King Bearings typically come with a warranty (often 12 24 months), providing peace of mind. Their reputation for reliability means they are a trusted choice among flathead Ford enthusiasts, reducing the risk of catastrophic failure.

6. **Ease of Installation** The bearings are pre-packed and ready to install, with clear instructions. Many flathead Ford engines have straightforward bearing removal and installation processes, making this an accessible upgrade for DIYers.

7. **Cost-Effective Long-Term Solution** While the upfront cost is higher than OEM bearings, replacing them with King Bearings can prevent costly engine damage from bearing failure. This makes them a cost-effective choice for engines that see regular use or are modified.

---

1. **Higher Upfront Cost** King Bearings are significantly more expensive than OEM or generic aftermarket bearings. For a complete set (typically 5 7 bearings, depending on the engine), the cost can range from $150 $300, which may be a barrier for budget-conscious buyers.

2. **Overkill for Stock or Lightly Used Engines** If your engine is stock or runs rarely, the improved bearings may not be necessary. In such cases, OEM bearings (if still in good condition) or a lower-cost aftermarket option might suffice, saving money without sacrificing reliability.

3. **Installation Requires Care** While the process is manageable, improper installation (e.g., uneven seating, incorrect torque, or debris in the bearing surfaces) can lead to premature failure. This requires attention to detail, especially when working with older engines that may have worn crankshaft journals or block surfaces.

4. **Potential for Over-Engineering** Some flathead Ford engines, particularly those used for classic cruising rather than high-performance use, may not benefit significantly from premium bearings. In these cases, the extra cost may not justify the performance gains.

5. **Limited Availability of Parts** While King Bearings are widely available, some specialty shops or online retailers may not stock them. This could require ordering from a specific supplier, which may involve shipping delays or higher costs.

6. **Compatibility with Aging Engines** If your engine has significant wear (e.g., out-of-round crankshafts, scored bearing surfaces, or a distorted block), simply replacing the bearings may not solve underlying issues. A full engine rebuild or inspection may be necessary before installing new bearings.

---

### **Conclusion**

The **King Bearings MB3352SI-020** is an excellent choice for owners of **1939 1948 59A Flathead Ford V8 engines**, particularly those planning modifications, high-mileage use, or performance applications. Their superior quality, durability, and compatibility with modern engine builds make them a worthwhile investment for serious enthusiasts. However, for engines that are stock, lightly used, or not modified, the cost may not be justified, and lower-cost alternatives could be sufficient.

If you are restoring or heavily modifying your engine, upgrading to King Bearings is a **strong recommendation**. If your engine is in good condition and used primarily for occasional driving, consider whether the investment is necessary or if a more budget-friendly option would suffice.

- You are restoring or modifying your 59A engine.

- You plan to use the engine frequently or under high-stress conditions (e.g., forced induction, high RPMs).

- You want the best possible longevity and performance from your bearings.

- You are willing to invest in high-quality components for a reliable, long-term solution.

- Your engine is stock and used rarely.

- You are on a tight budget and can find equally reliable bearings at a lower cost.

- You are unsure about the overall condition of your engine (a full rebuild may be needed first).

- You prefer to test OEM or lower-cost bearings before committing to premium options.

Details:

I'll be back for more parts the '47 Ford. Headquarters. And King Bearings meet my expectations for quality.

Once again, Speedway to the rescue. Yes, I recommend this product.

part #: mb3352si020 prices

• $99.99-$151.51

specifications cranshafengin:

• for makes: Ford
• for years: 1939-1948
• brand: King Bearings
• mpn: Mb3352si-020
• part type: Engine
• california prop 65 warning: False
• size: .020 In.

seller cranshafengin:

• city: Lincoln, NE
• # reviews: 365275
• rating: 99.8%

payments cranshafengin:

• credit card: Mastercard
• wallet: Paypal
• other

general cranshafengin:

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

returns cranshafengin:

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

shipping cranshafengin:

• transit: 3-5 Days
• class: Expedited
• service: Expedited
• cost: $13.99
• type: Fixed

offer cranshafengin:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: May 16, 2026

King Bearings MB3352SI-020 Is Similar To:

• Cr4046xp King Engine Bearings Connecting Rod Bearing For Honda 611500530494 (35.5% similar) Item condition must be new and in original. Outside the contiguous USA...(September 28th, 2018)
• Cr4538ca King Engine Bearings Connecting Rod Bearing For Mini 611500540226 (37.1% similar) Outside the contiguous USA. Item condition must be new and in original...(October 17th, 2018)
• Cr4542xp King Engine Bearings Connecting Rod Bearing For Honda 611500542985 (35.5% similar) Item condition must be new and in original. Outside the contiguous USA...(August 24th, 2018)
• Cr4586xp King Engine Bearings Connecting Rod Bearing For Mitsubishi 611500553004 (31.8% similar) Item condition must be new and in original. Outside the contiguous USA...(November 7th, 2018)
• Cr6853xp King Engine Bearings Connecting Rod Bearing For Bmw 611500570292 (33.3% similar) Item condition must be new and in original. Outside the contiguous USA...(October 17th, 2018)
• Cr696am King Engine Bearings Cr Connecting Rod Bearing For 611500117602 (33.8% similar) Item condition must be new and in original. Outside the contiguous USA...(September 4th, 2018)
• Cr868xpn King Engine Bearings Cr Connecting Rod Bearing For 611500532245 (33.6% similar) Outside the contiguous USA. Item condition must be new and in original...(August 24th, 2018)
• Mb509hp King Engine Bearing Main Brgs Chevy 611500564611 (27.1% similar) Today, racers every where know that doing business with Barnett performance means the best price, products they want are in stock, and free same day shipping. Every part is scanned from the shelf to parts puller APOS cart. Warranty most parts come with a limited manufacturer APOS on the part only. ...(March 22nd, 2019)
• Mb5259am King Engine Bearings Crankshaft Main For Honda 611500388002 (33.1% similar) Item condition must be new and in original. Outside the contiguous USA...(November 7th, 2018)
• Mb529si010 King Engine Bearing Main Bearings Kin 611500404863 (27.5% similar) Then it APOS scanned from the cart to shipping conveyor. Every part is scanned from the shelf to parts puller APOS cart. Please see the info below. Finally, the part is scanned from conveyor to your shipping box. From then on, Barnett performance has been well known in the drag racing community as a...(March 22nd, 2019)
• Mb5505xpstdx King Engine Bearing Main Brgs Ford 611500568817 (26.3% similar) Warren APOS sons, Glenn and Kirk Barnett are now running the day-to-day operations of business, time permitting, will continue their father example by racing competitively at drag tracks all over south. Then it APOS scanned from the cart to shipping conveyor. Most items ship free. From then on, ...(March 22nd, 2019)