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Steel Weld-On Male AN Fitting -12AN
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When installing a GM TH350 or TH400 transmission behind an LS series engine while using a curved flexplate you'll need this adapter spacer
25:1 RATIO
the better it seals)
GM LS WATER CROSS OVER BLOCK OFF - SILVER Category_450 SERIES NYLON BRAID Steel Weld-On Male AN FittingGM LS Water Cross Over Block Off Silver Suit GM LS Series Engines, Sold Individually Aeroflow Performance steam vent block off plugs are specifically designed for the GM LS series engine, these cross over adapters will allow you to delete or block off the water cross over tubes on the factory or aftermarket cylinder heads. The low profile design gives extra clearance and does not require removal of the block off when removing the cylinder head bolts.