HONDA 50300-SM4-A00 Rear Crossmember Beam Frame

( Manufacturer Part Number: 50300-SM4-A00 ), ( Type: Subframe ), ( Frame Type: Rear Sub Frame ), ( Manufacturer Warranty: 1 Month ), ( Color: Black ), ( Universal Fitment: No ), ( Placement On Vehicle: Rear ), ( Country Of Origin: Japan )

Review HONDA Sedan Rear Crossmember Subframe Beam Sub Frame Oem fits ACCORD 1990–1993

The **Honda 50300-SM4-A00 rear crossmember beam frame** from the **1990 1993 Honda Accord (models with the SM4 engine)** is a critical structural component designed to provide uncompromising strength and durability for the vehicle s rear suspension and frame assembly. Crafted from high-grade **mild steel**, this crossmember beam frame is precision-engineered to withstand the rigors of daily driving, offering robust support for the rear axle, subframe, and various auxiliary systems while maintaining optimal alignment and rigidity. The design incorporates **welded construction** with carefully positioned reinforcement ribs and gussets, ensuring resistance against torsional stress, road vibrations, and impact forces that could compromise handling or structural integrity. This component serves as the backbone for mounting the **rear suspension bushings, shock absorbers, and sway bar**, while also housing critical wiring harnesses and fuel line routing, making it an essential part of both the vehicle s mechanical and electrical systems. Whether used in restoration projects, performance modifications, or routine maintenance, this crossmember beam frame is a direct-fit replacement for OEM applications, ensuring seamless compatibility with the **1990 1993 Accord s** suspension geometry and frame layout. Its sturdy construction and reliable performance make it a dependable choice for enthusiasts seeking to maintain or enhance the structural integrity of their Honda, bridging functionality with longevity for years of trouble-free operation.

### **Pros and Cons of Buying a 1990-1993 Honda Accord Rear Crossmember (50300-SM4-A00)**

1. **Durability and Reliability** Honda parts from this era are known for their solid construction, often made from high-quality steel. The crossmember is designed to handle the weight of the rear suspension and cargo, making it a dependable choice for repairs.

2. **Widespread Availability** Due to the popularity of the SM4 Accord, replacement parts, including crossmembers, are still available through aftermarket suppliers, junkyards, and Honda dealerships. This makes sourcing relatively easy.

3. **Compatibility with Modifications** Many owners of this era s Accords perform suspension upgrades (e.g., coilovers, sway bars, or lift kits). The stock crossmember can often be retained with minor modifications, reducing costs.

4. **Lower Cost Compared to New** Purchasing a used or salvaged crossmember is significantly cheaper than buying a brand-new OEM part, making it a budget-friendly option for repairs.

5. **Repairable if Damaged** Unlike some modern components, older Honda parts can often be welded or reinforced if they suffer minor damage, extending their usability.

6. **Proven Design** The SM4 s rear suspension layout is straightforward, with the crossmember playing a key role in supporting the rear axle and subframe. Its design has stood the test of time with few major issues.

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1. **Age-Related Wear** If sourced from a salvage yard, the crossmember may have hidden rust, cracks, or structural weaknesses from years of exposure to road salt, moisture, or improper storage. A thorough inspection is essential.

2. **Fitment Challenges** Some aftermarket or modified vehicles may require slight adjustments (e.g., bolt pattern changes, alignment tweaks) to ensure proper installation. A mechanic s expertise may be needed.

3. **Limited Customization** Unlike modern parts, this crossmember is not designed for extreme off-road use or heavy modifications. It may not support high-performance suspension setups without reinforcement.

4. **Potential for Counterfeit Parts** Buying from untrusted sources (e.g., eBay without verification or unknown sellers) risks receiving a fake or mismatched part. Always verify the part s authenticity and origin.

5. **Rust and Corrosion Risks** Older Honda parts, especially those from snowy or coastal regions, are prone to rust. A rusted crossmember can weaken over time, leading to failure if not addressed.

6. **Installation Complexity** Replacing the crossmember requires removing the rear subframe, which is a labor-intensive job. Unless you have experience with suspension work, professional help may be necessary.

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The **1990-1993 Honda Accord rear crossmember (50300-SM4-A00)** is a **solid, cost-effective choice** for repairs, especially for stock or lightly modified vehicles. Its durability, availability, and compatibility with common modifications make it a practical option. However, **buyers must exercise caution** ensuring the part is free of rust, cracks, and damage is critical. If sourced responsibly (e.g., from a reputable junkyard or dealer), it can save money without compromising reliability.

For **high-performance or off-road builds**, consider reinforcing the crossmember or opting for a modern, upgraded version. Otherwise, the SM4 part remains a **wise investment** for classic or everyday use.

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- **Buy from a trusted source** (e.g., a junkyard with inspection services or a Honda dealer) to avoid rusted or damaged parts.

- **Inspect thoroughly** for cracks, weld defects, or excessive corrosion before purchasing.

- **Consult a mechanic** if unsure about installation or compatibility with modifications.

- **Consider welding reinforcement** if the part shows minor damage to restore strength.

- **Prioritize this part for stock or mild-mod vehicles** for aggressive builds, explore aftermarket alternatives.

For most owners, the **pros outweigh the cons**, making it a **reliable and economical choice** for rear suspension repairs.

Details:

Labor, installation, and diagnostic costs are not covered. As used OEM parts, items may show normal signs of wear consistent with age and prior use. Cleans and inspected. This part was removed from 1993 Honda Accord Sedan.

Good used condition. 50300-SM4-A00. Condition and Testing.

part #: 50300sm4a00 price

• $145.00

specifications mocycfra:

• for models: Accord
• for makes: Honda
• for years: 1990-1993
• mpn: 50300-sm4-a00
• type: Subframe
• frame type: Rear Sub Frame
• manufacturer warranty: 1 Month
• color: Black
• universal fitment: No
• placement on vehicle: Rear
• country of origin: Japan

offer mocycfra:

• availability: In Stock
• started: May 22, 2026
• options: Ship-to-home
• sold: 0
• quantity: 1

seller mocycfra:

• city: Vancouver, Washington
• rating: 99.9%
• # reviews: 732

returns mocycfra:

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

general mocycfra:

• condition: Used
• Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts

payments mocycfra:

• credit card: Diners-club
• wallet: Apple-pay
• other

shipping mocycfra:

• cost: $57.90
• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS
• transit: 5-8 Days

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