• Quick Fuel Carburetor Kits BFX-4700 Item Image
1 1
Quick Fuel Technology

Quick Fuel Black Diamond FX 4700

Quick Fuel Black Diamond FX 4700

$1,260.39
$1,262.95 $1,260.39
Sale Sold out

Out of stock

Need this part?

This item is currently unavailable. Ask us about availability or help finding a suitable replacement.

Ask about availability or fitment

Year, make, model and engine help us check fitment.

We'll reply to your inquiry by email. This is not an automatic restock alert.

Shipping & returns

This selection is unavailable. Ask us to confirm availability and timing.

Shipping details

In-stock orders are processed within 48 hours; transit time is additional.

International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.

Read the shipping policy

Returns

Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.

Read the full return policy
Return details & how to start

Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.

Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.

Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.

Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.

After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.

Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.

For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.

Specifications

Product details shared across all variants.

Product type
Carburetor
Category
Carburetors
Shipping weight
12.5 lb
Barcode
00849804000119

Billable shipping weight; may include dimensional weight.

Serious drag racing demand a serious drag racing carburetor, and the QFX-Series stands as the flagship model in QFT's lineup. Raised air horns improve entry angle into the venturi while ensuring undisrupted flow over the air bleeds. Annular boosters with CNC-machined billet aluminum inserts provide increased air flow, a stronger signal, and less turbulence. QFX carbs offer unparalleled fuel atomization with annular boosters specific for either gas, methanol, or E85 fuels. Five-emulsion billet metering blocks and four-corner idle circuits offer flexible tunability that today's high-horsepower engines demand. To cover a broad range of applications, methanol- and E85-compatible models, as well as two- and three-circuit fuel systems, are available. Ready to run out of the box, the QFX-Series carburetor will help you get to the winner's circle. Even a carburetor that performs great can still be an eyesore, but it doesn't have to be that way. Quick Fuel Technology's proprietary Black Diamond® coating offers excellent corrosion resistance as well as a durable finish that easily stands up to dirt and oil. In addition to great looks, the PTFE coating reduces fuel temperature by six percent for improved performance.

Specifications

Barrels: 4

Billet Color: Black

Booster: Annular

Brand: Quick Fuel

CFM: 1050

Choke: None

Circuit: 2

Emission Code: 3

Finish: Black

Fuel: Gasoline

Fuel System: Carbureted

High Speed Air Bleed: 31

Idle Air Bleed Size: 63

Material: Aluminum

Model: FX Series

Primary Main Jet: 84

Primary Power Valve: 35

Primary Pump Nozzle Size: 35

Product Type: Carburetor

Secondaries: Mechanical

Secondary Main Jet: 92

Supercharged Application: No

Throttle Bore: 2.000 inch

Features:

  • QFX aluminum main body w/raised venturi
  • Billet aluminum metering blocks with screw in restrictions
  • Aluminum fuel bowls with dual sight windows and fuel inlets
  • Nitrophyl® Floats (notched rear) and jet extensions
  • Viton .130" Needles and Seats
  • Billet Aluminum annular booster inserts
  • QuickLink™ adjustable secondary opening adjustment
  • Hand assembled and engine tested
View full details

Vehicle fitment