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LT4 Stanadyne 7.45mm High-Flow Direct Fuel Injector 611661 Single

LT4 Stanadyne 7.45mm High-Flow Direct Fuel Injector 611661 Single
   
$289.00 
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LT4 Stanadyne 7.45mm High-Flow Direct Fuel Injector 611661 Single

Extreme Fuel Delivery for
High-Horsepower LT Applications

Stanadyne’s LT4 Gen 1 direct injection injector delivers the additional fuel flow required for high-performance while preserving the factory spray pattern and targeting.

Not a modified OEM injector, each unit is manufactured using precision laser-drilled nozzle technology for significantly increased flow capacity while maintaining the combustion characteristics engineered by GM.

Features

  • All new injector design; not a modified OEM injector
  • Maintains OEM spray targeting
  • Finite Element Analysis (FEA) validated design
  • OE-quality idle and drivability after proper calibration
  • Direct replacement for OEM fuel rail

    and cylinder head
  • Designed for naturally aspirated, supercharged,

    and turbocharged engines
  • Compatible with gasoline and E85 fuel
  • Injector Tip Diameter7.45 mm (OE)
  • Number of Nozzle Holes6 (OE)
  • Nozzle TechnologyPrecision laser drilledSpray PatternSame as OE
  • Operating Pressure220 bar
  • Maximum Fuel Pressure280 bar
  • Flow Increase+61% vs OEM LT4 injectors, +88% vs ‘20-’23 LT2 injectors+116% vs 2023+ LT2 small-stem injectors
  • InstallationDirect drop-in
This product was added to our catalog on Thursday 24 September, 2026.
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