Retno Phenolic Insulator Carburetor Riser – 48 DDA / IDA / IDF

Improve your carburetor installation with the Retno Phenolic Insulator Carburetor Riser, precision-engineered to provide a reliable seal while helping reduce heat transfer from the intake manifold to the carburetor. Manufactured for a precise fit, this insulator features dual O-ring grooves—one on each side—for enhanced sealing and dependable performance.

Designed for carburetors compatible with 48 DDA, 48 IDA, and 48 IDF applications, this riser has a 48 mm internal diameter and a 0.475" (12.06 mm) thickness, making it an excellent choice for performance engines, vintage race cars, and custom builds.

Features

• Precision-machined phenolic carburetor insulator/riser
• Compatible with 48 DDA, 48 IDA, and 48 IDF carburetors
• 48 mm internal diameter
• 0.475" (12.06 mm) thick
• Dual O-ring grooves (one on each side) for improved sealing
• Helps reduce heat transfer from the intake manifold to the carburetor
• Ideal for performance, racing, and restoration applications

Specifications

• Product: Phenolic Insulator Carburetor Riser
• Brand: Retno
• Thickness: 0.475" (12.06 mm)
• Internal Diameter: 48 mm
• O-Ring Grooves: Two (one per side)
• Compatibility: 48 DDA, 48 IDA, and 48 IDF carburetors
• Quantity: 1