AISIN 90910-12118 Vacuum Valve

( Brand: Aisin ), ( Manufacturer Part Number: 90910-12118 ), ( Part Type: Vacuum Valve ), ( Performance Part: No )

Review AISIN 1992 95 Genuine Lexus Toyota Original Vacuum Valve fits SUPRA SC300 1992-95

The **Aisin 90910-12118 Vacuum Valve** is a precision-engineered component designed specifically for the **1992 1995 Lexus SC300 and Toyota Supra (A80/A90 models)**, serving as a critical element in the vehicle s vacuum-assisted braking and engine management systems. This high-quality valve is manufactured by **Aisin AW Co., Ltd.**, a renowned automotive supplier known for its reliability and adherence to strict engineering standards. The vacuum valve operates by regulating the flow of vacuum pressure from the engine s intake manifold to the brake booster, ensuring smooth and efficient braking performance while also contributing to the proper functioning of the vehicle s power steering and other vacuum-dependent systems. Constructed from durable materials, including a robust housing and a finely calibrated internal mechanism, this valve is built to withstand the demands of high-performance driving and extended use. Its compact yet robust design allows for seamless integration into the vehicle s under-hood layout, minimizing installation complexity while maximizing functionality. Whether used in maintenance, restoration, or performance tuning projects, this **OEM-spec vacuum valve** guarantees optimal performance, compatibility, and longevity, making it an essential replacement part for enthusiasts and mechanics alike.

### **Pros and Cons of buying a Aisin 90910-12118 Vacuum Valve (1992-95 Lexus SC300/Toyota Supra)**

1. **Compatibility and Functionality** This vacuum valve is specifically designed for the 1992-1995 Lexus SC300 and Toyota Supra (A80/A90 models), ensuring a proper fit and reliable operation. It is part of the vehicle s power brake system, which is critical for smooth braking performance.

2. **Reliability of the Brand** Aisin is a well-known automotive manufacturer with a strong reputation for producing high-quality automotive components. Their parts are often durable and designed to meet OEM standards.

3. **Ease of Installation** As an OEM or high-quality aftermarket part, this vacuum valve should be relatively straightforward to install, assuming the buyer has basic mechanical knowledge or access to a mechanic. The vehicle s design in this era is not overly complex for this component.

4. **Prevents Brake Fading and Improves Performance** A failing vacuum valve can cause a noticeable loss of brake assist, leading to harder pedal effort and potential brake fade under heavy use. Replacing it restores proper brake assist, enhancing safety and driving feel.

5. **Cost-Effective Compared to Full Brake Overhaul** Replacing just the vacuum valve is significantly cheaper than overhauling the entire brake system, making it a practical solution for minor brake system issues.

6. **Prevents Further Damage** A failing vacuum valve can strain other brake components, such as the master cylinder or brake booster. Replacing it early can prevent more expensive repairs down the line.

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1. **Age of the Vehicle** The 1992-1995 Lexus SC300/Toyota Supra are older cars, which means they may have other worn-out components (e.g., brake lines, hoses, or the brake booster itself). Buyers should inspect the rest of the brake system to avoid future issues.

2. **Potential for Counterfeit Parts** While Aisin is a reputable brand, counterfeit or low-quality aftermarket parts can sometimes be sold as genuine. Buyers should purchase from trusted dealers or authorized suppliers to ensure authenticity.

3. **Labor Costs if Professional Installation is Needed** If the buyer lacks mechanical experience, labor costs for installation could add up, especially if the vehicle requires additional diagnostics (e.g., checking for leaks or booster issues).

4. **Limited Availability of Parts** As these cars age, finding OEM or high-quality aftermarket parts can become challenging. Buyers should confirm availability before purchasing to avoid delays.

5. **Possible Additional Repairs** If the vacuum valve failure is symptomatic of a larger issue (e.g., a failing brake booster or vacuum leak elsewhere), addressing those problems may be necessary, increasing the overall cost.

6. **Rust and Wear in Older Vehicles** Older Supra/SC300 models may suffer from rust in the brake lines or corrosion in the brake system, which could complicate repairs or require additional maintenance.

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The Aisin 90910-12118 vacuum valve is a **practical and reliable replacement part** for the 1992-1995 Lexus SC300/Toyota Supra, provided the buyer addresses any underlying brake system issues. It is a cost-effective solution for restoring proper brake assist and preventing further damage. However, buyers should be mindful of the vehicle s age, potential counterfeit parts, and the need for additional diagnostics or repairs. If the rest of the brake system is in good condition, this part is a solid choice for maintaining safety and performance.

- **Buy from a trusted source** (e.g., an authorized Aisin distributor, reputable online marketplace, or a dealership with a good return policy) to ensure authenticity.

- **Inspect the rest of the brake system** (booster, lines, hoses, and master cylinder) before purchasing to avoid future problems.

- **Consider professional installation** if unsure about DIY repairs, especially if the vehicle has other mechanical concerns.

- **Budget for potential additional repairs** if the vacuum valve failure is part of a larger issue (e.g., a failing brake booster).

- **Prioritize safety** if the brake system is compromised, do not delay repairs, as this directly impacts driving safety.

For most owners, this vacuum valve is a **wise investment** to maintain reliable braking performance in their Supra or SC300.

Details:

It is not a performance part, making it suitable option for those looking replacement vacuum valve their vehicle. The product offers authenticity and quality, ensuring compatibility with the specified vehicle model's from 1992 -1995. The product is a genuine Lexus SC300 Toyota Supra original vacuum valve made by Aisin with manufacturer part number 90910-12118.

part #: 9091012118 prices

• $24.99-$30.00

specifications emissyste:

• for models: Sc300, Supra
• for makes: Lexus, Toyota
• for years: 1992-95
• brand: Aisin
• mpn: 90910-12118
• part type: Vacuum Valve
• performance part: No

payments emissyste:

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

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: Used

offer emissyste:

• availability: In Stock
• started: March 22, 2026
• best offers: True
• sold: 0
• quantity: 1
• options: Ship-to-home

seller emissyste:

• # reviews: 1462
• rating: 98.9%
• city: Plant City, Florida

returns emissyste:

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

shipping emissyste:

• cost: $4.99
• class: Standard, Expedited
• type: Fixed
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS
• transit: 4-9 Days

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