VC4015 AUTOLITE Nos Vacuum Advance Nash

Review AUTOLITE Nos Vacuum Advance 1946 Thru 48 6cyl for NASH

The Autolite VC4015 vacuum advance unit is a crucial component in the ignition system of certain 1946-1948 Nash cars equipped with a 6-cylinder engine. This vacuum advance unit, manufactured by Autolite, is designed to enhance the performance of your engine by improving the timing of the ignition.

The VC4015 is a mechanical vacuum advance unit, which means it utilizes engine vacuum to advance the timing of the ignition system. By advancing the ignition timing, the engine can burn its fuel more efficiently and effectively, leading to increased power and improved fuel economy.

This vacuum advance unit features a robust and durable design, with a high-quality vacuum diaphragm that provides reliable and consistent operation. The VC4015 is constructed from premium materials, ensuring it can withstand the rigors of regular use in your classic Nash vehicle.

The unit is designed to be easily installed, with clear markings and a straightforward design. It is important to note that the installation process may require some mechanical knowledge and experience, so it is recommended that the installation be performed by a qualified automotive professional or an experienced hobbyist.

When it comes to maintaining the performance and reliability of your vintage Nash car, using a high-quality vacuum advance unit like the Autolite VC4015 is a must. With its durable design and proven ability to enhance engine performance, this vacuum advance unit is an essential upgrade for any 1946-1948 Nash 6-cylinder engine.

In summary, the Autolite VC4015 vacuum advance unit is a vital component in the ignition system of certain 1946-1948 Nash cars. Its durable design, reliable operation, and proven ability to enhance engine performance make it an essential upgrade for any classic Nash vehicle owner.

Pros and Cons of Buying an Autolite VC4015 Vacuum Advance for a 1946-1948 Nash 6-Cylinder Engine

The Autolite VC4015 is a vacuum advance unit designed to improve the fuel-air mixture in internal combustion engines. This particular model is suitable for 1946-1948 Nash 6-cylinder engines. In this article, we will discuss the pros and cons of purchasing an Autolite VC4015 to help you make an informed decision.

1. Improved Engine Performance: The vacuum advance helps the engine achieve optimal performance by adjusting the ignition timing according to engine load. This results in smoother idling, better acceleration, and improved fuel efficiency.

2. Easy Installation: The Autolite VC4015 is a direct replacement for the original vacuum advance unit on 1946-1948 Nash 6-cylinder engines. This makes installation relatively straightforward, as no major modifications are required.

3. OEM Quality: Autolite is a well-known and trusted brand in the automotive industry, and the VC4015 is no exception. It is designed and manufactured to meet or exceed OEM specifications, ensuring reliable and consistent operation.

4. Affordable: The Autolite VC4015 is a cost-effective solution for improving engine performance in older vehicles. Compared to other performance upgrades, it is a relatively affordable option.

1. Potential for Vacuum Leaks: During installation, it is crucial to ensure that the vacuum lines are properly sealed and secured to prevent vacuum leaks. If left unchecked, vacuum leaks can lead to poor engine performance and increased fuel consumption.

2. Requires Regular Inspection: The vacuum advance unit is a critical component in the engine's ignition system and should be inspected regularly. This includes checking for vacuum leaks, worn or damaged parts, and proper operation.

3. May Not Suit All Applications: While the Autolite VC4015 is suitable for most 1946-1948 Nash 6-cylinder engines, it may not be the best option for vehicles with significant modifications or unique requirements. In such cases, it is recommended to consult with a professional mechanic or the vehicle's manufacturer.

The Autolite VC4015 vacuum advance unit offers several advantages for the 1946-1948 Nash 6-cylinder engine, including improved engine performance, easy installation, OEM quality, and affordability. However, it also comes with some drawbacks, such as the potential for vacuum leaks and the need for regular inspection. Ultimately, the decision to purchase an Autolite VC4015 depends on your specific needs, budget, and technical expertise. If you are comfortable with the installation process and understand the maintenance requirements, this vacuum advance unit can be an excellent investment for enhancing the performance of your vintage Nash.

For those who are interested in purchasing an Autolite VC4015 vacuum advance unit for their 1946-1948 Nash 6-cylinder engine, it is recommended to do the following:

1. Ensure that you have the necessary tools and knowledge to install the unit properly.

2. Inspect the existing vacuum advance unit and vacuum lines for any signs of damage or leaks.

3. Purchase the Autolite VC4015 from a reputable supplier to guarantee authenticity and quality.

4. Follow the installation instructions carefully and take the necessary precautions to prevent vacuum leaks.

5. Regularly inspect the vacuum advance unit and vacuum lines to maintain optimal engine performance.

Details:

This is a new, old stock Autolite vacuum advance which my books show to be original equipment on 1946 thru 48 Nash series 4640, 4740 and 4840 with six cylinder engine. You are buying on one piece. These units came to me in the original open box. Looking for a hard-to-find part your antique vehicle.

Domestic buyers to pay $7.50 shipping. Nos Autolite vacuum advance - 1946 thru 48 Nash 6cyl.

specifications ignitioncomp:

• for models: Nash
• brand: Autolite
• mpn: Vc4015
• part type: Vacuum
• manufacturer warranty: No
• vintage part: Yes
• country of origin: United States

payments ignitioncomp:

• credit card: mastercard
• other
• wallet: apple-pay

seller ignitioncomp:

• # reviews: 7862
• city: frankfort, illinois
• rating: 99.5%

shipping ignitioncomp:

• carrier: usps
• class: standard
• service: usps first class
• transit: 5-9 days
• type: fixed

returns ignitioncomp:

• paid by: seller
• policy: returns accepted
• time: 30 days

general ignitioncomp:

• category: Auto Parts > Car Truck Accessories > Ignition Systems Components

offer ignitioncomp:

• availability: in stock
• options: ship-to-home
• in stock #: 2
• sold #: 8
• started: february 12, 2026
• prices: $50.00–$95.00
• item condition:
  • New other (see details)
  • New