Holley 550-443 Installation Manual

550-442 EFI Throttle Body w/ GM Trans Control - Polished
550-443 EFI Throttle Body w/ GM Trans Control – Hard Core Gray
550-445 EFI Throttle Body w/ GM Trans Control – Classic Gold Finish
FUEL INJECTION INSTALLATION MANUAL
Read this manual before using this product.
WARNING!
This instruction manual must be read and fully understood before beginning installation. If the instructions are not fully
understood, installation should not be attempted. Failure to follow the instructions may result in subsequent system failure and
could result in serious personal injury and/or property damage. Keep this manual.
For the safety and protection of you and others as well as your vehicle, only a trained mechanic having adequate fuel system
experience should perform the installation, adjustment, and repair.
While undertaking any work involving the fuel system, it is particularly important to remember one of the very basic principles of
safety: fuel vapors are heavier than air and tend to collect in low places where an explosive fuel/air mixture may be ignited by
any spark or flame resulting in property damage, personal injury, and/or death. Extreme caution must be exercised to prevent
spillage and thus eliminate the formation of such fuel vapors. All work involving this product and the fuel system generally
MUST be performed in a well-ventilated area. Do NOT smoke or have an open flame present near gasoline vapors or an
explosion may result.
Any components damaged due to failure to follow these instructions will not be covered by the warranty. Failure of any one
component does not constitute, nor does it justify, warranty of the complete system. Individual service items are available for
replacement of components. If assistance is required or if you need further warranty clarification, please call Holley Technical
Service at 1 (270) 781-9741 or (866) 464-6553.
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