Improved Racing EGM-116 Oil Accumulator Adapter for GM LS Engines, 10AN 100% bolt-on in place of the factory oil bypass cover, just above the oil filter, low-profile design clears most long tube headers Single female -8AN straight O-ring boss port for adapter fitting and two 1/8" NPT ports for sensors or turbo oil feed line Supplied with -10AN adapter fitting for plumbing an oil accumulator to your LS-series engine Constructed from 6061-T6 billet aluminum via CNC mill, MIL-A-8625 Type II black anodized finish Made in the USA, Lifetime Warranty