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This Peterson Fluid Systems oil inlet fitting (-12AN x 1/2 NPT x 3.1") adapts oil input at the front of the block over the water pump on small-block Chevy engines. The aluminum -12AN to 1/2 NPT adapter with a 3.1-inch length is intended to route oil supply into the block in installations that require a front-mounted feed location.
Peterson Fluid Systems Oil Inlet Fitting -12AN x 1/2 x 3.1
