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This custom CNC-machined brass adapter lets you connect a late-model LS power steering pump to 1979 and older GM-style 3/8-inch tubing eith inverted flare power steering line s. The thread size is 5/8-18.
The adapter threads directly into the high-pressure flow valve on 1980 and newer GM power steering pumps. This allows you to keep and use older factory-style inverted flare lines with your LS power steering setup.
A Viton O-ring is included for a secure seal.
Fits Gen III and Gen IV LS power steering pumps, including:
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Corvette
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Camaro
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GTO
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CTS-V
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Vortec truck applications
A simple solution for connecting older GM power steering lines to newer LS power steering pumps.
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Pressure |
Return |
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LS Power Steering Pump |
M16x1.5 O-Ring |
Hose Clamp |
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Before 1980 Gearbox (SAE) |
5/8"-18 |
11/16"-18 |
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After 1980 Gearbox (Metric O-Ring) |
M16x1.5 O-Ring |
M18x1.5 O-Ring |
 
If your O-ring is old and hard, use the following part number for replacements: GM 26001594
DO NOT use any O-ring you find at the parts store. The Metric O-Ring fitting requires an O-Ring made of Viton so the power steering fluid doesn't destroy them.
O-Ring Technical Info: 903 (7.65mm ID x 1.63mm C/S or .301 ID x .064 C/S) Viton
Make sure there isn't an O-ring already in the power steering pump from the old line!
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