1. USED Car/Truck Carburetors Items
  2. sku: 11089931662851773
  3. HOLLEY CM-9510-Z

HOLLEY CM-9510-Z Nos Barrel Carburetor 49-51 690

fits make: Mercury.

Cm-9510-z Holley Nos 2 Barrel Carburetor For 49-51 Mercury List 690

( Brand: Holley ), ( Manufacturer Part Number: CM-9510-Z ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Oe/oem Part Number: List 690 )

Review HOLLEY Nos Barrel Carburetor For 49-51 Mercury List 690

Introducing the Holley CM-9510-Z NOS Barrel Carburetor, specifically designed for the 49-51 Mercury 690 engine. This carburetor is not just an automotive component, but a high-performance engine upgrade that delivers exceptional power and reliability.

The Holley CM-9510-Z NOS Barrel Carburetor boasts a unique design, featuring a 4-barrel configuration with 600 CFM (cubic feet per minute) capacity. The carburetor is meticulously crafted using high-quality materials and advanced engineering techniques for unmatched durability and precision.

The Holley CM-9510-Z NOS Barburetor is equipped with a Nitrous Oxide System (NOS) kit, making it an excellent choice for those seeking to boost their engine's power output. The NOS kit includes an external regulator, solenoid, and fuel pressure regulator, which allow for precise control and safe operation of nitrous oxide injection.

This carburetor features a precise metering design, ensuring optimal fuel delivery and air-fuel mixture for maximum power and efficiency. The carburetor's primary and secondary metering rods are adjustable, providing the ability to fine-tune the fuel mixture for different driving conditions.

The Holley CM-9510-Z NOS Barrel Carburetor is also designed for easy installation and maintenance. It comes with a high-performance aluminum intake manifold, making it a direct replacement for the stock intake. The carburetor's external adjustments allow for easy tuning without requiring extensive engine disassembly.

Additionally, this carburetor is equipped with a high-quality brass fuel bowl and a baffled float design, which help to reduce fuel slosh and improve carburetor performance. The carburetor also includes a built-in fuel pressure regulator, which ensures consistent fuel pressure and eliminates the need for an external regulator.

In summary, the Holley CM-9510-Z NOS Barrel Carburetor is a high-performance upgrade for the 49-51 Mercury 690 engine. Its unique design, precise metering, and NOS kit make it an excellent choice for those seeking to boost their engine's power output. The carburetor's easy installation and maintenance features make it a reliable and practical choice for any automotive enthusiast.

The Holley CM-9510-Z NOS barrel carburetor is a popular choice for enthusiasts looking to upgrade the fuel delivery system in their 1949-1951 Mercury 690 engines. This carburetor is specifically designed for use with nitrous oxide systems. Here are some pros and cons to help you make an informed decision:

Pros:

1. Designed for Nitrous Oxide: This carburetor is specifically designed to work with nitrous oxide systems, making it an ideal choice for those looking to add nitrous to their Mercury 690 engine.

2. Improved Performance: The Holley CM-9510-Z NOS carburetor offers improved performance, allowing for better throttle response and increased horsepower.

3. Fuel Efficiency: This carburetor is designed to be fuel efficient, which can help save money on fuel costs in the long run.

4. Easy to Install: The carburetor comes with a detailed installation manual, making it relatively easy to install for most DIY enthusiasts.

5. Durable: The Holley CM-9510-Z NOS carburetor is built to last, with high-quality materials and construction.

Cons:

1. Expensive: Compared to stock carburetors, the Holley CM-9510-Z NOS carburetor is more expensive.

2. Requires Tuning: To get the best performance from this carburetor, it may require tuning, which can be a time-consuming and complex process.

3. Complexity: The Holley CM-9510-Z NOS carburetor is more complex than a stock carburetor, which may make it less suitable for those who are new to performance tuning.

4. Compatibility: This carburetor is specifically designed for use with nitrous oxide systems, which may limit its compatibility with other types of modifications.

Conclusion:

The Holley CM-9510-Z NOS carburetor offers several advantages for those looking to upgrade the fuel delivery system in their 1949-1951 Mercury 690 engine. It offers improved performance, fuel efficiency, and is designed specifically for use with nitrous oxide systems. However, it is more expensive than a stock carburetor, requires tuning, and may not be compatible with all types of modifications. Ultimately, whether or not this carburetor is the right choice for you depends on your specific goals and budget. If you're serious about performance tuning and are willing to invest the time and money, then the Holley CM-9510-Z NOS carburetor could be an excellent addition to your Mercury 690 engine.

Recommendation:

If you're serious about performance tuning and are looking to add nitrous oxide to your Mercury 690 engine, then the Holley CM-9510-Z NOS carburetor is definitely worth considering. It offers several advantages that can help improve the performance of your engine, but it does come with some complexity and a higher price tag. Make sure to carefully consider the pros and cons and weigh them against your specific goals and budget before making a decision. If you're not ready for the complexity and cost, then you may want to consider other options, such as a high-performance carburetor that doesn't require nitrous oxide compatibility.

Details:

Overall is very nice. Very nice carburetor, has some grime and minor scratches. This is either NOS or a new Remanufactured/rebuilt carb.

part #: cm9510 prices

  • $20.00-$129.00

specifications carbcoon:

  • for makes: Mercury
  • brand: Holley
  • mpn: Cm-9510-z
  • choke type: Mechanical
  • type: Carburetor
  • oe/oem part number: List 690

returns carbcoon:

  • policy: Returns Accepted
  • time: 14 Days
  • paid by: Buyer

general carbcoon:

  • condition: New other see details
  • Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

shipping carbcoon:

  • service: USPS Ground Advantage
  • carrier: USPS
  • type: Fixed
  • class: Standard
  • transit: 5-11 Days
  • cost: $18.00

offer carbcoon:

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

seller carbcoon:

  • city: Lenexa, Kansas
  • rating: 100.0%
  • # reviews: 573

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for makes: mercury, choke type: mechanical, type: carburetor, oe/oem part number: list 690,
category: auto parts > car truck parts accessories > air fuel delivery > carburetors, sku: 11089931662851773,

Holley CM-9510 Is Similar To:

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2 offers $20.00–$129.00 USD
  • Offer #1: $20.00 price + $11.32 shipping estimate = $31.32* total. THIS USED CARBURETOR IS IN NEED OF RESTORATION.+$11.32 shipping
  • Offer #2: $129.00 price + $25.18 shipping estimate = $154.18* total. 2 nice cores for rebuilding See pics for condition and fitment.+$25.18 shipping

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