GENERAL MOTORS GM 9781678 Emergency Brake Switch 442

( Brand: General Motors Gm ), ( Manufacturer Part Number: 9781678 ), ( Items Included: Pedals ), ( Color: Black ), ( Material: Rubber, Stainless Steel, Steel ), ( Vintage Part: Yes ), ( Type: Emergency Brake Pedal ), ( Oe/oem Part Number: Oem, Factory Original Equipment ), ( Attachment Type: Bolt On ), ( Features: Easy Installation, Non-slip ), ( Universal Fitment: No ), ( Country Of Origin: United States )

Review GENERAL MOTORS GM Pontiac 442 Emergency Brake Switch Oe fits FIREBIRD CHEVELLE CUTLASS GTO GS 1965–1972

The **GM 9781678-1965 to 1972 Pontiac GTO, Firebird 442, Chevelle SS, Cutlass GS Emergency Brake Switch** is a meticulously crafted, high-performance replacement component designed to seamlessly integrate with the iconic muscle cars and performance-oriented General Motors vehicles of the mid-to-late 1960s. This switch is a direct-fit, no-compromise solution for the original emergency brake (or parking brake) lever mechanism, ensuring reliable operation while maintaining the classic styling and functionality that enthusiasts expect from these legendary machines. Engineered from durable, corrosion-resistant materials, the switch is built to withstand the demands of daily driving, track use, and restoration projects alike, offering a robust alternative to worn or failing factory units. Its precise fitment accounts for the unique wiring and mechanical linkages found in the **GTO s aggressive stance, the Firebird 442 s high-revving V8 powerplant, the Chevelle SS s aggressive muscle-car aesthetics, and the Cutlass GS s sporty handling**, ensuring compatibility without the need for extensive modifications. Whether restoring a show-quality classic or upgrading a daily driver, this switch delivers the confidence of a dependable emergency brake system, complete with a clean, factory-style appearance that complements the vehicle s heritage. Built to last, it eliminates the frustration of a malfunctioning brake lever while preserving the authenticity of these timeless American muscle cars.

### **Pros and Cons of Buying a 1965 1972 Pontiac GTO/Firebird 442, Chevelle SS, or Cutlass GS Emergency Brake Switch (General Motors Part #9781678)**

#### **Pros of Buying This Part**

1. **Compatibility** The GM 9781678 emergency brake switch is designed for a wide range of muscle cars and performance vehicles from the late 1960s and early 1970s, including:

- **Pontiac GTO** (1965 1972)

- **Pontiac Firebird 442** (1967 1972)

- **Chevrolet Chevelle SS** (1966 1972)

- **Chevrolet Cutlass GS** (1967 1972)

- Other GM models from the same era with similar brake systems.

This means you won t need to hunt for a rare or aftermarket replacement, as it fits stock applications.

2. **Reliability** GM s original parts were built to last, and this switch is no exception. If properly installed and maintained, it should function reliably for years, especially in classic cars where the brake system isn t subjected to extreme daily abuse.

3. **Ease of Installation** Being an OEM part, it should integrate seamlessly with the stock wiring and brake linkage. Most owners report that swapping it in takes less than an hour, especially if they have basic mechanical experience.

4. **Avoids Aftermarket Risks** Cheap or poorly made aftermarket switches can fail prematurely or introduce compatibility issues (e.g., incorrect wiring, poor fit). An OEM part eliminates these concerns.

5. **Preserves Originality** If you re restoring or maintaining a classic car, using an original or reproduction GM part helps retain authenticity, which is valuable for enthusiasts and collectors.

- Specialty classic car parts suppliers (e.g., Summit Racing, RockAuto, eBay, Craigslist)

- GM parts auctions or salvage yards

- Reproduction parts manufacturers (e.g., JEGS, Summit Racing)

This makes it easier to source than rare aftermarket alternatives.

7. **Cost-Effective for the Longevity** While not the cheapest part, it represents good value compared to aftermarket options that may fail sooner or require additional modifications.

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#### **Cons of Buying This Part**

1. **Age and Wear** If purchasing a used or salvaged part, it may be worn out or corroded, especially if the original car was driven hard or exposed to moisture. Inspecting the switch for rust, cracks, or resistance in the mechanism is crucial before buying.

2. **Potential for Counterfeit or Mismatched Parts** Some sellers on eBay or Facebook Marketplace may list this part incorrectly or sell knockoffs. Always verify the part number (9781678) and check for authenticity, especially if buying from an unknown source.

- Reproduction parts (which may not be identical in feel or durability)

- Salvaged parts (which may have hidden damage)

- Aftermarket alternatives (which may not fit perfectly)

This can make sourcing more difficult than for modern vehicles.

4. **Installation Challenges** While generally straightforward, some owners report that the wiring harness or mounting bracket may not align perfectly with modern or heavily modified brake systems. A little patience or minor adjustments may be needed.

5. **Cost Compared to Aftermarket Options** A new or reproduction GM switch typically costs between **$20 $50**, depending on the source. While reasonable, some aftermarket switches (e.g., from Spal, ACDelco, or Summit Racing) may offer similar performance at a lower price. However, these may lack the exact fit of an OEM part.

6. **Rust and Corrosion Risks** If the part comes from a car that sat in a damp environment, rust can compromise the internal mechanism. Always test the switch for smooth operation before installing it.

7. **Limited Lifespan in Modern Conditions** While durable, these switches are not designed for extreme use (e.g., daily driving, heavy towing, or aggressive braking). If the car sees heavy use, the switch may wear out faster than expected.

---

### **Conclusion**

The **GM 9781678 emergency brake switch** is a solid choice for restoring or maintaining a **1965 1972 Pontiac GTO/Firebird 442, Chevelle SS, or Cutlass GS** due to its **reliability, compatibility, and ease of installation**. It avoids the pitfalls of aftermarket parts that may not fit or last as long. However, buyers should be cautious about **sourcing authentic parts, inspecting for wear, and ensuring proper installation** to maximize longevity.

For most enthusiasts, the **pros outweigh the cons**, especially if you prioritize **originality, durability, and ease of replacement**. If budget is a concern, a **high-quality aftermarket alternative** (e.g., from Spal or Summit Racing) could be a viable substitute, but it may not match the exact fit of an OEM part.

---

### **Recommendation**

1. **Buy from a Reputable Source** Purchase from **Summit Racing, JEGS, or a trusted classic car parts dealer** to ensure authenticity. Avoid unknown sellers unless the part has been thoroughly inspected.

- Smooth operation (no grinding or resistance)

- No rust or corrosion inside the housing

- Proper fit with the brake pedal linkage

3. **Consider a Reproduction Part** If an OEM part is unavailable, a **reproduction GM switch** (e.g., from Summit Racing) is a good alternative, as it s designed to match the original specifications.

4. **Install Properly** Follow the wiring diagram carefully, especially if modifying the harness. A miswired switch can cause **brake failure or electrical issues**.

5. **Maintain Regularly** Lubricate the switch periodically (with brake grease) to prevent stiffness, and check for wear if the car sees heavy use.

**Final Verdict:** **Buy the GM 9781678 switch if you want a reliable, original-fit replacement.** If cost is a concern, a **high-quality aftermarket version** is a reasonable alternative. Always prioritize **quality sourcing and proper installation** to ensure long-term performance.

Details:

Assembly line correct genuine GM e-brake switch not a cheap aftermarket. The factory correct attachment nut is also included. Real nice condition working original factory emergency brake pedal switch for numerous 65-72 GM passenger cars.

part #: 9781678 price

• $16.95

specifications pedalspadsaz:

• for models: Gto, Gs, Firebird, Chevelle, Cutlass
• for makes: Pontiac
• for years: 1965-1972
• brand: General Motors Gm
• mpn: 9781678
• items included: Pedals
• color: Black
• material: Rubber, Stainless Steel, Steel
• vintage part: Yes
• type: Emergency Brake Pedal
• oe/oem part number: Oem, Factory Original Equipment
• attachment type: Bolt On
• features: Easy Installation, Non-slip
• universal fitment: No
• country of origin: United States

general pedalspadsaz:

• condition: Used
• Car Truck Parts Accessories > Interior Parts Accessories > Pedal Assemblies, Pads Parts

offer pedalspadsaz:

• started: April 2, 2026
• quantity: 1
• sold: 0
• best offers: True
• options: Ship-to-home
• availability: In Stock

returns pedalspadsaz:

• policy: No Returns

shipping pedalspadsaz:

• carrier: USPS
• cost: $9.80
• class: Standard, Expedited
• transit: 5-11 Days
• service: USPS Ground Advantage, USPS Priority Mail
• type: Calculated

seller pedalspadsaz:

• city: Algona, Iowa
• rating: 98.5%
• # reviews: 6707

payments pedalspadsaz:

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

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