HOLLEY 80842HBX Ultra Cfm Carburetor Fuel Log

( Brand: Holley ), ( Manufacturer Part Number: 80842HBX ), ( Type: Carburetor ), ( Material: Aluminum ), ( Universal Fitment: Yes ), ( Vintage Part: No ), ( Country Of Origin: United States )

Review HOLLEY Ultra Cfm Carburetor Fuel Log fits E85 XP 650

The Holley 80842HBX Ultra XP E85 Carburetor is a high-performance fuel system solution for racers and enthusiasts seeking maximum power and efficiency from their E85-fueled engines. This carburetor is part of Holley's Ultra XP series, which is renowned for its advanced design and capabilities.

The Ultra XP E85 Carburetor features an innovative internal design that allows for precise fuel metering and delivery, making it ideal for the unique characteristics of E85 ethanol fuel. The carburetor's metering rods are made from a special high-strength stainless steel alloy, which ensures durability and resistance to the corrosive effects of E85. The fuel bowls are also vented, eliminating the need for a separate venturi and reducing the potential for fuel spills.

The Ultra XP E85 Carburetor comes with a 650 CFM (cubic feet per minute) airflow rating, providing ample fuel delivery for high-performance applications. It is also compatible with Holley's Ultra Lite throttle bodies, allowing for a lightweight and efficient powertrain configuration.

This carburetor is designed to be easy to tune and adjust, with a number of features that make fine-tuning simple and effective. It comes with a removable power valve, which allows for quick adjustments to fuel pressure and fuel distribution. The carburetor also includes a removable power jet, which can be adjusted to optimize fuel delivery for different engine configurations and operating conditions.

The Ultra XP E85 Carburetor is built with the highest quality materials and components, ensuring long-lasting performance and reliability. It features a billet aluminum base and float bowls, as well as a high-quality brass fuel bowl gasket. The carburetor also includes a set of adjustable fuel pressure regulators, which allow for precise fuel pressure control.

Overall, the Holley 80842HBX Ultra XP E85 Carburetor is a top-performing and advanced fuel system solution for E85-fueled engines. Its innovative design, precise fuel metering capabilities, and ease of tuning make it an ideal choice for racers and enthusiasts seeking maximum power and efficiency from their engines.

The Holley 80842HBX Ultra XP 650 CFM E85 Carburetor is a popular choice for racers and enthusiasts who use ethanol fuel in their high-performance applications. Here are some pros and cons that may help you make an informed decision about purchasing this carburetor.

1. Designed for Ethanol Fuel: The Holley Ultra XP E85 carburetor is specifically designed to work with ethanol fuel, making it an excellent choice for those who prefer or need to use this type of fuel.

2. Large CFM Rating: With a 650 CFM rating, this carburetor can deliver a significant amount of air and fuel to high-performance engines, helping to ensure optimal power and performance.

3. Advanced Features: The Ultra XP E85 carburetor comes with several advanced features, including a unique fuel pressure regulator, adjustable power valves, and a vacuum secondary circuit.

4. Durable Construction: This carburetor is built to withstand the demands of high-performance applications, with a robust cast aluminum housing and heavy-duty components.

5. Easy-to-Tune: The Holley Ultra XP E85 carburetor is known for its ease of tuning, with a simple and intuitive adjustment process that allows users to fine-tune their engine's performance.

1. Higher Cost: Compared to some other carburetors on the market, the Holley Ultra XP E85 carburetor is relatively expensive, which may be a deterrent for some buyers.

2. Complexity: With its advanced features and adjustability options, the Holley Ultra XP E85 carburetor can be more complex to install and tune than some other carburetors.

3. Requires Specific Fuel System: To use this carburetor, you'll need to have a compatible fuel system, which may require additional investment and installation time.

The Holley 80842HBX Ultra XP 650 CFM E85 Carburetor is an excellent choice for those who use ethanol fuel in their high-performance applications and require a large CFM rating. Its advanced features, durability, and ease of tuning make it a popular choice among racers and enthusiasts. However, its higher cost and complexity may be a deterrent for some buyers. Ultimately, if you're looking for a high-performance carburetor that can handle ethanol fuel and deliver excellent power and performance, the Holley Ultra XP E85 carburetor is definitely worth considering.

If you're in the market for a high-performance carburetor that can handle ethanol fuel and deliver excellent power and performance, the Holley 80842HBX Ultra XP 650 CFM E85 Carburetor is an excellent option to consider. While it may be more expensive and complex than some other carburetors, its advanced features, durability, and ease of tuning make it a worthwhile investment for those who demand the best from their high-performance applications.

Details:

This particular carburetor is not available to purchase through Holley anymore. Does not include air cleaner stud. I have my Holley Ultra XP 650 cfm E85 carburetor for sale, includes adjustable aluminum fuel log with AN8 connection. Holley part number is 80842HBX Works great and has served me well on my truck for 5,000 miles, just switching to EFI.

part #: 80842hbx prices

• $69.95-$79.99

specifications carbcoon:

• for models: E85, Xp, 650
• brand: Holley
• mpn: 80842hbx
• type: Carburetor
• material: Aluminum
• universal fitment: Yes
• vintage part: No
• country of origin: United States

payments carbcoon:

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

offer carbcoon:

• sold: 0
• availability: In Stock
• started: October 24, 2025
• options: Ship-to-home
• quantity: 1

shipping carbcoon:

• service: USPS Priority Mail
• transit: 4-10 Days
• cost: $18.68
• type: Calculated
• carrier: USPS
• class: Expedited

general carbcoon:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Carburetors

returns carbcoon:

• policy: No Returns

seller carbcoon:

• rating: 100.0%
• city: Dundas, Minnesota
• # reviews: 364

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