Impco Model CA55M-500 Carburetor

The IMPCO CA55M-500 is a carburetor/mixer designed for LPG vapor or natural gas. It delivers reliable air/gas mixing for engines up to about 73 horsepower, offering flexibility in mounting and solid performance across a wide operating temperature range.

Key Features

• Designed for use with LPG vapor or natural gas

• Compatible with negative inlet pressure: -1.5″ water column (~-0.37 kPa)

• Operates reliably in harsh temperature conditions: −40°F to +250°F (≈ −40°C to +121°C)

• Mounting position: vertical orientation recommended

• Multiple mounting orientations possible in some configurations (updraft, downdraft, side draft) depending on CA55 model family

• Works with various air horn / flange options for tuning / fitment flexibility

Specifications

Applications

• Automotive, industrial or generator engines using propane vapor or natural gas

• Setups requiring flexible mounting and good mixing across a range of horsepower demands

• Engines that require stable flow and reliable performance in extreme temperature environments

Why Choose the IMPCO CA55M-500

This unit delivers solid performance for its size: adequate flow for midsize engines, durable temperature tolerance, and flexibility for different installation layouts. If you need reliable gas/air mixing up to ~73 HP with rugged service and flexibility, this carburetor is a good match.