TOYOTA 84540-30240 Automactic Transmission Neutral Safety MK3 Switch

( Manufacturer Part Number: 84540-30240 ), ( Type: Automatic Transmission ), ( Vintage Part: Yes )

Review TOYOTA Mk3 Automactic Transmission Neutral Safety Switch fits SUPRA

The **Toyota 84540-30240 Neutral Safety Switch** is a critical, high-quality electrical component designed exclusively for the **Toyota Supra (MK3, A80 generation, 1993 2002)** with an **automatic transmission**, ensuring optimal safety and functionality during operation. This precision-engineered switch is a direct replacement for the factory-installed neutral safety switch, which plays a vital role in preventing unintended engine activation when the transmission is not in **Park (P)** or **Neutral (N)**. Crafted from durable, corrosion-resistant materials, the switch features a robust internal mechanism that guarantees reliable performance even under demanding driving conditions. Its compact yet sturdy design integrates seamlessly into the transmission linkage, maintaining the original fit and function while enhancing longevity. The switch is equipped with a **spring-loaded lever mechanism** that securely locks into place, providing a tactile feedback sensation when engaged, which is essential for driver confidence and safety. Whether used in classic car restorations, performance modifications, or routine maintenance, this switch ensures compliance with Toyota s original specifications, reducing the risk of electrical malfunctions, accidental gear engagement, or transmission-related failures. Built to withstand the test of time, the **84540-30240** is a dependable choice for enthusiasts seeking authenticity and reliability in their Supra s drivetrain system.

### **Pros and Cons of buying a Toyota 84540-30240 (Supra MK3 Automatic Transmission Neutral Safety Switch)**

1. **Essential for Safety and Functionality** The neutral safety switch is a critical component in the automatic transmission system of the Supra MK3. Without it, the vehicle may not start, shift properly, or even remain in neutral, posing a safety risk.

2. **Direct OEM Replacement** This part is a genuine Toyota replacement, ensuring compatibility with the MK3 Supra s transmission system. It matches the original specifications, reducing the risk of fitment issues.

3. **Reliability** Toyota parts are known for durability, and this switch is no exception. A high-quality switch minimizes the chance of premature failure, which can disrupt transmission operation.

4. **Prevents Further Damage** If the original switch is faulty, driving with it can damage the transmission or other related components. Replacing it proactively avoids costly repairs down the line.

5. **Ease of Installation** The switch is relatively straightforward to install, especially for those with basic mechanical knowledge. Toyota provides clear wiring diagrams and mounting instructions.

6. **Cost-Effective Compared to Transmission Overhaul** Replacing a single switch is far cheaper than repairing or replacing an entire automatic transmission if the issue is left unaddressed.

1. **Potential Counterfeit Risk** While this part is an OEM Toyota replacement, there is a risk of purchasing a counterfeit or low-quality aftermarket part if buying from an untrusted seller. Always verify the seller s reputation and authenticity.

2. **Limited Availability** Toyota parts, especially for older models like the Supra MK3, can be harder to find in stock. This may require ordering from a specialty parts supplier, which could extend wait times.

3. **Mixed Quality in Aftermarket Alternatives** While the OEM part is ideal, some buyers may opt for cheaper aftermarket alternatives, which might not last as long or could cause intermittent issues.

4. **Diagnostic Challenges** If the switch is not the root cause of transmission problems (e.g., a faulty solenoid or transmission fluid issue), replacing it alone may not resolve the issue, leading to frustration.

5. **Labor Costs if Professional Installation is Needed** While DIY installation is possible, some buyers may prefer a professional mechanic, which adds to the overall cost.

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The **Toyota 84540-30240 neutral safety switch** is a **highly recommended replacement** for any Supra MK3 automatic transmission experiencing neutral-related issues. Its OEM quality ensures reliability, safety, and proper functionality. While there are minor drawbacks such as potential counterfeit risks or limited availability, these can be mitigated by purchasing from a trusted supplier and verifying the part s authenticity.

For most Supra owners facing neutral switch problems, this is a **cost-effective and necessary upgrade** that prevents further transmission damage and ensures safe operation. If budget is a concern, always compare prices from reputable suppliers to avoid overpaying for an essential component.

Buy the **Toyota 84540-30240 neutral safety switch** from a trusted parts dealer (such as Toyota-authorized suppliers, eBay with verified sellers, or reputable online marketplaces like RockAuto or JEGS). If unsure about installation, consult a mechanic familiar with Supra transmissions. This part is a **practical investment** in maintaining your vehicle s reliability.

Details:

In working Condition - Will fit all Years Mk3, 1986 1992 A70 Supra MK3 NEUTRAL SAFETY SWITCH FOR AUTOMATIC TRANSMISSION TURBO NON SUPRAS Comes with Harness Plugs shown in pictures.

part #: 8454030240 prices

• $258.54-$279.00

specifications autotransmissionsgo:

• for models: Supra
• for makes: Toyota
• mpn: 84540-30240
• type: Automatic Transmission
• vintage part: Yes

payments autotransmissionsgo:

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

offer autotransmissionsgo:

• availability: In Stock
• best offers: True
• started: June 10, 2026
• options: Ship-to-home
• sold: 0
• quantity: 1

returns autotransmissionsgo:

• policy: No Returns

seller autotransmissionsgo:

• # reviews: 10
• city: Huntington Beach, California
• rating: 91.7%

shipping autotransmissionsgo:

• service: UPS Ground
• transit: 5-12 Days
• cost: $13.00
• type: Fixed
• class: Standard
• carrier: UPS

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

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