Holley Throttle Body Injection Renew Kit | GBP Performance
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Holley

Holley | Throttle Body Injection Renew Kit

503-5
Holley | Throttle Body Injection Renew Kit 503-5 | 2 bbl replacement TBI, for PN 502-4/502-5/502-6/502-7/502-8, replacement parts included
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Holley – Throttle Body Injection Renew Kit

Description

The Holley Throttle Body Injection Renew Kit (503-5) is designed to restore 2-barrel replacement TBI fuel injection units for Holley part numbers 502-4, 502-5, 502-6, 502-7, and 502-8. The kit supplies the wear components needed to renew the TBI system at a fraction of the cost of a full replacement unit. Ideal for preventive maintenance or reconditioning an already-installed Holley TBI unit. Compatible only with the listed part numbers — verify the TBI unit's PN before purchasing.

Specifications

  • Brand: Holley
  • Part Number: 503-5
  • Type: TBI Renew Kit (2-barrel throttle body injection)
  • Compatibility: Holley PN 502-4, 502-5, 502-6, 502-7, 502-8
  • Application: 2 bbl replacement TBI units
  • Usage: Reconditioning / preventive maintenance
  • Contents: Wear parts and renew components (see included list)
  • Installation: Bolt-on for compatible Holley TBI units
  • Compatibility: Verify PN before purchase (See Application Section)
  • Condition: New
  • Sold and shipped by GBP Performance

 

Note:

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Compatibility (Application)

MakeModelYearsEngineNotes
Holley2 bbl Replacement TBI UnitsCompatible PN 502-4, 502-5, 502-6, 502-7, 502-8Verify TBI unit PN before purchase; renew kit only, not a replacement unit
Holley
503-5
90127105764

Data sheet

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