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Radiator Hose Part numbers

For the the 86 Firebird T/A with a 305 TPI (Vin F):

  • Top Radiator hose
    • OEM 10120056
    • Gates 21675
    • Dayco 71203 (On Rock auto, $13.22)
  • Bottom Radiator Hose
    • OEM 10120070
    • Gates 21324 (Rock Auto, $15.97)
    • Dayco 71131 (Rock Auto, $16.01)
  • Heater Hose 1
    • OEM: 10135312
    • Gates 19605
    • Dayco 88353 (Rock Auto, $13.42) 
  • Heater Hose 2
    • OEM: 14081308
    • Dayco  87703 (Rock Auto, $15.12)
  • Heater Hose 3 (3/4" Some length)
    • OEM: 12322343
    • Gates 28412 (Rock Auto, $1.18 per ft)

Hose Diagram: 

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Numbers:

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Heater hoses: 

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