HOLLEY 12-842 Billet Carbureted Idle Bleed Fuel Pressure 090127670477 Regulator

( Brand: Holley ), ( Manufacturer Part Number: 12-842 ), ( Part Type: Fuel Pressure Hp Regulator ), ( Color: Black Anodized ), ( UPC: 090127670477 ), ( Material: Aluminum )

Review HOLLEY Hp Billet Carbureted By Pass Idle Bleed Fuel Pressure Regulator

The Holley 12-842 HP Billet Idle Bleed Fuel Pressure Regulator is a high-performance component designed to deliver precise fuel pressure control for your carbureted hot rod, muscle car, or race engine. This regulator is engineered with a billet aluminum construction, ensuring durability and a sleek, custom look that complements the unique character of your high-performance vehicle.

At its core, this Holley fuel pressure regulator is built to provide consistent and reliable fuel pressure for your carbureted engine. It uses a robust, 3/8 NPT threaded design for easy installation and compatibility with a wide range of fuel systems. The regulator features a unique idle bleed design, which allows you to fine-tune your engine's idle quality by manually adjusting the fuel pressure while the engine is running. This can be particularly useful during engine tuning sessions or when dealing with specific fuel system challenges.

The Holley 12-842 HP Billet Idle Bleed Fuel Pressure Regulator offers versatile fuel pressure adjustment capabilities. It can be set to maintain fuel pressures ranging from 2 to 12 psi (0.14 to 0.83 bar), allowing you to optimize your engine's performance for various driving conditions and fuel system configurations. The regulator's adjustment range is clearly marked on the body, making it easy to set the desired fuel pressure.

The regulator also comes with a 1/8 NPT fuel inlet and a 1/4 NPT fuel outlet. This configuration is suitable for most fuel system applications, including those with filters or other accessories. The regulator's fuel inlet is equipped with a 5-micron filter to help protect against fuel contaminants and maintain cleanliness within your fuel system.

The Holley 12-842 HP Billet Idle Bleed Fuel Pressure Regulator is not only a functional upgrade for your carbureted engine but also an aesthetically pleasing one. Its billet aluminum construction is not only strong and durable but also adds a touch of elegance and customization to your engine bay. Additionally, the regulator's black anodized finish helps protect against corrosion and ensures a long service life.

In summary, the Holley 12-842 HP Billet Idle Bleed Fuel Pressure Regulator is a high-performance, customizable, and durable component designed to provide precise fuel pressure control for your carbureted engine. Its unique idle bleed design, versatile adjustment range, and sleek billet aluminum construction make it an excellent choice for hot rods, muscle cars, and race engines that demand the best in fuel system performance and appearance.

The Holley 12-842 HP Billet Carbureted Idle Bleed Fuel Pressure Regulator is a performance-grade fuel pressure regulator designed for high-performance applications. Here are some pros and cons of buying this regulator:

1. High-performance design: The Holley 12-842 is engineered to deliver consistent fuel pressure for optimal engine performance, especially in high-performance applications.

2. Billet construction: The regulator is made from billet aluminum, which makes it strong, lightweight, and durable.

3. Adjustable fuel pressure: The regulator allows you to adjust fuel pressure from 2 to 18 psi, providing flexibility to fine-tune your engine's performance.

4. Easy installation: The regulator comes with all necessary hardware for installation, and it is relatively easy to install compared to other high-performance fuel pressure regulators.

1. Price: The Holley 12-842 is more expensive than stock fuel pressure regulators, which can be a drawback for some buyers.

2. Requires bleed process: Like all fuel pressure regulators, the Holley 12-842 requires a bleed process to remove air bubbles from the fuel system. This can be time-consuming and messy.

3. Not suitable for all applications: The Holley 12-842 is designed for high-performance applications, and it may not be necessary for stock or mildly modified engines.

The Holley 12-842 HP Billet Carbureted Idle Bleed Fuel Pressure Regulator is a high-quality, performance-grade fuel pressure regulator that offers consistent fuel pressure, adjustability, and easy installation. However, it comes with a higher price tag and requires a bleed process. If you are building a high-performance engine or looking for improved fuel system performance, this regulator is a worthwhile investment. Otherwise, a stock regulator may be sufficient for your needs.

If you are building a high-performance engine or looking for improved fuel system performance, the Holley 12-842 HP Billet Carbureted Idle Bleed Fuel Pressure Regulator is a solid choice. Its billet construction, adjustable fuel pressure, and easy installation make it a valuable addition to any performance build. However, if you are working on a stock or mildly modified engine, a stock fuel pressure regulator may be a more cost-effective option.

Details:

A signature is required on all UPS orders over $750. They feature a black bright dip anodized body and clear top for corrosion resistance good looks. They are precision machined from 6061-T6 billet aluminum for strength and durability. The Holley 12-842 fuel pressure regulator features 3/8 NPT in/out ports and a return port.

Buyer pays return shipping. Holley Billet Fuel Pressure Regulators are part of a complete line fuel system products from. 12-842 HP Billet Carbureted By Pass w/ Idle Bleed Fuel Pressure Regulator: Street/Strip Applications x000D Two Port Adjustable from 4.5 to 9 PSI with bleed.

part #: 12842 prices

• $193.95-$199.99

specifications airfueldepo:

• brand: Holley
• mpn: 12-842
• part type: Fuel Pressure Hp Regulator
• color: Black Anodized
• upc: 090127670477
• material: Aluminum

general airfueldepo:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Other Air Fuel Delivery

offer airfueldepo:

• availability: In Stock
• sold: 0
• quantity: 10
• options: Ship-to-home
• started: June 4, 2025

payments airfueldepo:

• credit card: Discover
• other
• wallet: Apple-pay

returns airfueldepo:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

seller airfueldepo:

• city: Bowling Green, Kentucky
• # reviews: 14992
• rating: 98.9%

shipping airfueldepo:

• type: Fixed
• transit: 2-6 Days
• service: UPS Ground
• class: Standard
• cost: $0.00
• carrier: UPS

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