Coolant Reservoir Adapters

  • Cooling system adapter for the 2017 and newer Chevrolet® Silverado and GMC® Sierra with Duramax engines
  • Due to the configuration of the expansion tank, this adapter is recommended for vacuum filling only
  • Left-handed threading.
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Product Line

SKU Product Name Price
Cooling System Pressure Test Adapter - 48mm x 3mm RA10022 Cooling System Pressure Test Adapter - 48mm x 3mm
$40.99
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Cooling System Pressure Test Adapter - 45mm x 3mm RA10025 Cooling System Pressure Test Adapter - 45mm x 3mm
$40.99
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Cooling System Pressure Test Adapter - 56.5mm x 3mm RA10031 Cooling System Pressure Test Adapter - 56.5mm x 3mm
$39.99
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Radiator Pressure Test Adapter 52mm x 2.5mm RA10032 Radiator Pressure Test Adapter 52mm x 2.5mm
$39.99
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Cooling System Pressure Test Adapter - 52mm x 3mm RA10034 Cooling System Pressure Test Adapter - 52mm x 3mm
$39.99
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Cooling System Pressure Test Adapter - 52mm x 2.5mm RA10036 Cooling System Pressure Test Adapter - 52mm x 2.5mm
$38.99
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Cooling System Pressure Test Adapter - 63mm x 3mm RA10041 Cooling System Pressure Test Adapter - 63mm x 3mm
$39.99
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Cooling System Pressure Test Adapter - 62mm x 4mm RA10044 Cooling System Pressure Test Adapter - 62mm x 4mm
$38.99
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Cooling System Pressure Test Adapter - 52mm x 3mm RA10046 Cooling System Pressure Test Adapter - 52mm x 3mm
$39.99
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Cooling System Pressure Test Adapter - 34mm x 3mm RA10048 Cooling System Pressure Test Adapter - 34mm x 3mm
$39.99
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Cooling System Pressure Test Adapter - 50mm x 2.5mm RA10052 Cooling System Pressure Test Adapter - 50mm x 2.5mm
$38.99
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Cooling System Pressure Test Adapter - 40mm x 2mm RA10056 Cooling System Pressure Test Adapter - 40mm x 2mm
$37.99
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Cooling System Pressure Test Adapter - 52mm x 3mm RA10245 Cooling System Pressure Test Adapter - 52mm x 3mm
$36.99
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Cooling System Pressure Test Adapter - 52mm x 4mm RA10345 Cooling System Pressure Test Adapter - 52mm x 4mm
$39.99
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Radiator Pressure Test Adapter 52mm x 3mm RA10445 Radiator Pressure Test Adapter 52mm x 3mm
$39.99
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Cooling System Pressure Test Adapter - 32mm x 15mm Deep RA10128 Cooling System Pressure Test Adapter - 32mm x 15mm Deep
$39.99
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Cooling System Pressure Test Adapter - 32mm x 9.5mm Deep RA10138 Cooling System Pressure Test Adapter - 32mm x 9.5mm Deep
$39.99
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Cooling System Pressure Test Adapter - 2-11/16" O.D. RA14503 Cooling System Pressure Test Adapter - 2-11/16" O.D.
$37.99
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Duramax® Left-Hand Thread Radiator Adapter RA10092 Duramax® Left-Hand Thread Radiator Adapter
$52.99
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Duramax® Cooling System Vacuum Testing Adapter 52mm x 2.5mm RA10093 Duramax® Cooling System Vacuum Testing Adapter 52mm x 2.5mm
$49.99
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Limited quantity, orders subject to availability.