Holley EFI 300-248BK Black Cast Aluminum 4500 Throttle Body Intake Elbow for LS Engines

The Holley EFI 300-248BK is a high-quality cast aluminum intake elbow designed to connect 4500-style flanged intakes to GM LS throttle bodies. Finished in durable black cast aluminum, this elbow features a 105mm throttle body opening with a 100-degree mounting angle, providing excellent airflow and flexible installation options.

Key Features:

• Black cast aluminum construction for durability and heat resistance
• 4500 square flange pattern allows forward, sideways, or rearward throttle body mounting
• 105mm throttle body opening with 100-degree mounting angle
• Compatible with GM LS throttle bodies
• LS3-style MAP sensor mounting provision
• Two throttle linkage mounting bosses for versatile setup
• Four vacuum ports: one 1/4" NPT, one 3/8" NPT, and two 1/8" NPT
• Includes O-ring for proper sealing with 4500 flanged intakes
• Overall height: 6.4 inches

This intake elbow is ideal for LS engine swaps and custom intake manifold applications where a 4500 flange intake is used. The multiple vacuum ports provide convenient connections for boost reference, brake boosters, and other accessories, while the versatile mounting pattern allows you to orient the throttle body to best fit your application.