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CALFLOW
CALFLOW

Calflow LS LS1 LS2 LS3 LSX Water Pump Heater Core Bypass/Delete Hose

I/N: 1221511

Marketplace | Online only

$27.05

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Marketplace | Online only

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  • Moulded with a precise 180-degree bend to cleanly loop water pump heater ports without kinking.
  • Compatible with all mechanical water pumps on gm ls1, ls2, ls3, and lsx engines.
  • Manufactured from high-temperature reinforced epdm rubber resistant to engine coolants.
  • Simplifies under-bonnet plumbing during heater core bypasses or race prep.
  • Prevents coolant restrictions and maintains proper internal water pump circulation.
Specially pre-moulded with a smooth 180-degree bend, this heavy-duty reinforced rubber bypass hose allows quick loop removal of heater core lines from the mechanical water pump on GM LS-series engines. Ideal for race vehicles, kit cars, or summer cruisers where heater matrix plumbing is deleted, it connects the 5/8-inch and 3/4-inch water pump outlets securely without kinking.