Holley Accelerator Pump Discharge Nozzle 121-137 | 0.037" Maximum Flow Pair

Holley Accelerator Pump Discharge Nozzles - Part #121-137

Fine-tune your Holley carburetor's accelerator pump fuel delivery with these precision discharge nozzles. The 0.037" orifice size provides maximum fuel delivery volume, ideal for extreme high-performance and racing applications requiring the richest pump shot available to eliminate any lean conditions during aggressive acceleration. Sold as a pair with gaskets included for immediate installation.

What's Included:

• 2x accelerator pump discharge nozzles (0.037" orifice)
• 4x nozzle gaskets for leak-free installation

Key Features:

• Maximum Orifice Size: 0.037" hole size for richest fuel delivery available
• Straight Design: Direct spray pattern for optimal fuel distribution
• Genuine Holley Quality: OEM-grade components for reliable performance
• Complete Kit: Includes gaskets for professional installation
• Pair Included: Two nozzles for dual-feed or replacement applications

Performance Benefits:

• Delivers maximum accelerator pump shot volume for extreme applications
• Completely eliminates lean stumbles during hard acceleration
• Ideal for supercharged, turbocharged, and nitrous applications
• Provides aggressive throttle response for racing and drag strip use
• Perfect for engines with extreme airflow demands

Ideal Applications:

• Drag racing and competition applications
• Supercharged and turbocharged engines
• Nitrous oxide systems requiring rich pump shot
• Heavily modified engines with aggressive camshafts and cylinder heads
• Engines experiencing severe lean acceleration stumbles
• Maximum performance street/strip combinations

Technical Specifications:

• Part Number: 121-137
• Orifice Size: 0.037 inches (maximum available)
• Type: Straight discharge nozzle
• Quantity: 2 nozzles, 4 gaskets
• Application: Holley Performance Carburetors

Fast dispatch from our Perth warehouse. In-store pickup available for local customers.