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Rich/Lean Indicator | Holley Performance (534-50)


w/o Oxygen Sensor

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Holley Performance - Rich/Lean Indicator P/N 534-50 Features:

  • Mounts On Dash
  • Monitor Air/Fuel Ratio Of Your Engine
  • Enables More Exact Tuning

Product Documents:

Below is an abbreviated list of applications for the Rich/Lean Indicator.


Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.


Shipping Information

  • Item Requires Shipping
  • 0.3 lbs.
  • W3.4000” x H3.3000” x L6.7000”

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