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Coolant Bypass Seal/Steam Vent Gasket Replaces 56390 12551933

Free shipping on orders over $29.99

$9.95

$ 4 .99 $4.99

In Stock

About this item

  • Engine Coolant Water Bypass Steam Vent Gasket
  • Replaces 56390 / 12551933


This is a set of 4 gaskets - enough for one engine. Compatible with all LS engines. Hard to find and always in demand for LS Swappers. These Steam Vent Tube seals are a direct replacement for the leaky, aged factory parts. Or you can carry a spare set just in case; nothing ruins a race weekend like a coolant leak. Be sure to check out our other items for other great LS parts.


Derrick Johnson
2025-07-23 14:19:30
Lost my oem ones during engine swap but these saved the day
Dustin Howell
2025-07-22 11:45:35
No leaks so far and was a direct replacement for the coolant cross over under the intake manifold. Installed in 2001 Silverado 2500hd with 6.0.
Raymond M. Musgrave
2025-04-08 15:16:12
These fit my 2001 Camaro SS. no issues so far.
ted
2025-03-18 10:19:07
Gasket fit like factory
P.S268
2025-01-29 13:45:41
Work perfect
Snot Rocket
2025-01-13 10:33:38
Quick shipper fair price
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