Advanced Engine Design 5115X Adjustable .125-Inch Viton Needle and Seat Set for Holley and Quick Fuel Carburetors, 10-Pack

The Advanced Engine Design 5115X adjustable needle and seat set is designed for Holley and Quick Fuel carburetors requiring dependable fuel-level control. Each assembly features a .125-inch orifice and Viton construction to support reliable sealing and consistent carburetor performance in a range of high-performance applications. This convenient 10-pack is well suited for carburetor rebuilds, tuning work, service shops, and performance enthusiasts who want replacement components readily available.
The adjustable design allows precise fuel-level setup to help optimize carburetor operation and maintain stable fuel delivery. Viton material provides resistance to fuel exposure and helps the needle and seat maintain a dependable seal during regular use. The components are suitable for replacement or service applications where compatibility with Holley or Quick Fuel carburetors is required.
Use the Advanced Engine Design 5115X set when replacing worn, damaged, or inconsistent needle and seat assemblies. The parts are supplied as a 10-piece set for efficient maintenance across multiple carburetors or for keeping spares on hand. Verify carburetor compatibility and required orifice size before installation to ensure proper fit and tuning results.

Features:

• Brand: Advanced Engine Design

• Part Number: 5115X

• Application: Holley and Quick Fuel carburetors

• Design: Adjustable needle and seat assembly

• Orifice Size: .125 inch

• Material: Viton

• Quantity: 10-piece set

• Use: Carburetor replacement, rebuilding, and tuning