HOLLEY 12R-5252A Throttle Body Box Barrel

( Brand: Holley ), ( Part Type: Throttle Box ), ( Manufacturer Warranty: Yes ), ( Fitment Type: Performance/custom ), ( Manufacturer Part Number: 12R-5252A ), ( Country Of Manufacture: United States )

Review HOLLEY Throttle Body New In Box Old Stock Barrel fits QUAD

The Holley 12-5252A Throttle Body Box is a high-performance solution for quad-barrel carburetor applications in racing and hot rod engines. This throttle body box is engineered to deliver precise fuel delivery and smooth throttle response for optimal engine performance.

The Holley 12-5252A Throttle Body Box is designed to accommodate four 2-gallon Holley Quad Avenger or 600 CFM Holley Double Pumper carburetors. It features a robust cast aluminum construction, ensuring durability and reliability even in the most demanding racing conditions.

One of the standout features of this throttle body box is its integrated electric choke system, which provides quick and reliable choke operation. This feature is especially beneficial for cold-weather racing or hot rod applications where a reliable choke is crucial.

The Holley 12-5252A Throttle Body Box also incorporates a unique venturi design, which facilitates excellent idle quality and smooth transition between idle and wide-open throttle. This design also allows for precise fuel metering and optimal engine tuning.

The throttle shafts on this Holley throttle body box are designed to provide precise throttle control, allowing for precise engine tuning and optimal power delivery. They are also constructed from high-strength materials to ensure durability and reliability.

The Holley 12-5252A Throttle Body Box is also designed with ease of installation in mind. It includes mounting brackets for easy installation on most popular engine applications, as well as pre-drilled mounting holes for quick and easy carburetor installation.

In summary, the Holley 12-5252A Throttle Body Box is a high-performance, durable, and reliable solution for quad-barrel carburetor applications in racing and hot rod engines. Its integrated electric choke system, unique venturi design, and precise throttle control make it an excellent choice for those seeking optimal engine performance and reliability.

The Holley 12-5252A Throttle Body Box Quad Barrel is a popular aftermarket throttle body solution for muscle cars and hot rods. This product offers several advantages, but it also comes with some potential drawbacks. Here's a brief analysis of each.

1. Quad-bore throttle bodies: The 12-5252A features four 2.0-inch bore throttle bodies, which can provide better airflow and more efficient fuel delivery than stock throttle bodies.

2. Improved power: By improving airflow and fuel delivery, the Holley throttle body can help increase horsepower and torque.

3. Adjustable idle: The throttle body comes with built-in idle adjusters, allowing you to fine-tune the idle speed to your engine.

4. Improved throttle response: The Holley throttle body can help reduce throttle lag, making your engine more responsive and fun to drive.

5. Easy installation: The throttle body is designed to be a direct replacement for many stock applications, making installation relatively straightforward.

1. Cost: The Holley 12-5252A is a premium aftermarket part and can be more expensive than stock throttle bodies or some other aftermarket alternatives.

2. Complexity: While the installation is relatively simple, some users may find the adjustment process for things like idle and fuel mixture to be more complex than stock systems.

3. Compatibility: The Holley 12-5252A is designed for specific engine applications, so it may not be a direct fit for all vehicles. Be sure to check Holley's compatibility chart before making a purchase.

The Holley 12-5252A Throttle Body Box Quad Barrel offers several advantages for muscle car and hot rod enthusiasts, including improved power, better throttle response, and adjustable idle. However, it comes with some potential drawbacks, such as cost, complexity, and compatibility. Ultimately, if you're looking for a high-performance throttle body solution and are willing to pay the premium, the Holley 12-5252A could be an excellent choice for your vehicle.

If you're in the market for a high-performance throttle body and are confident that the Holley 12-5252A is compatible with your vehicle, it's definitely worth considering. Make sure to do your research and understand the installation process before making a purchase. Additionally, consider checking with local performance shops or online forums to see if anyone has experience with the product and can offer insights or tips.

part # 12r5252a price

• $375.00

specifications carbcaddie:

• for models: Quad
• brand: Holley
• part type: Throttle Box
• manufacturer warranty: Yes
• fitment type: Performance/custom
• manufacturer part number: 12R-5252A
• country of manufacture: United States

seller carbcaddie:

• rating: 99.9%
• # reviews: 15724

general carbcaddie:

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

offer carbcaddie:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0
• started: May 3, 2026
• quantity: 1

payments carbcaddie:

• credit card: Visa
• other
• wallet: Google-pay

shipping carbcaddie:

• service: USPS Ground Advantage
• class: Standard
• type: Fixed
• transit: 4-10 Days
• cost: $10.00
• carrier: USPS

returns carbcaddie:

• policy: No Returns

Holley 12R-5252A Is Similar To:

• Holley 12r-5204b Carburetor Throttle Base Plate #0559 (50.8% similar) $25.00–$40.00. (August 23rd, 2024)
• Holley 12r-4251b Carburetor Throttle Base Plate #0574 (50.8% similar) $24.95–$60.14. (August 23rd, 2024)
• Holley 37-119 Model 4160 4 Barrel 600 Cfm Carb Rebuild Kit (34.6% similar) $43.42–$48.24. (August 25th, 2024)
• Holley 80457-2 List Carburetor 600cfm 4bbl 4160 Main Body Only With New Gasket (35.4% similar) $8.35–$22.81. (August 26th, 2024)
• Holley 6r-3760b 4777 650 Double Pumper Main Body Vintage 1974 (35.4% similar) $34.19–$699.95. (August 26th, 2024)
• Holley Shs4 4-barrel Carb Carburetor Secondary Side Hung Fuel Float Bowl (19.9% similar) $17.25. (August 26th, 2024)
• Holley 10959 9834 4-barrel Carburetor Carb Primary Metering Block 600 Cfm (22.5% similar) $14.95–$31.95. (August 27th, 2024)
• Holley Shs2 4-barrel Carb Carburetor Secondary Side Hung Fuel Float Bowl (19.9% similar) $17.00. (August 27th, 2024)
• Holley 1a34r9716b39 4160 4-barrel Carburetor Vacuum Secondary Metering Plate 1a 34r-9716-b 39 (21% similar) $9.95–$13.95. (August 27th, 2024)
• Holley Shp3 4-barrel Carb Carburetor Primary Side Hung Fuel Float Bowl (20.1% similar) $31.05. (August 27th, 2024)
• Holley Shp2 4-barrel Carb Carburetor Primary Side Hung Fuel Float Bowl (20.1% similar) $35.00. (August 27th, 2024)