Earl's GM LS Oil Pressure Gauge Adapter Fittings - LS0021ERL vacuum-modulator-lines Other four-bolt intakes with routing

Other four-bolt intakes with routing issues can also benefit from this adapter

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Adapter NPT Size ( A ) 1/8 NPT FEMALE Adapter NPT Size ( B ) 1/8 NPT MALE Adapter Type NPT Male Female 90 Deg

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Earl's GM LS Oil Pressure Gauge Adapter Fittings - LS0021ERL vacuum-modulator-lines Other four-bolt intakes with routingOverview: Earl's new adapter fittings are ideal for installing an after market oil pressure gauge on GM LS engine swaps. These fittings screws directly into the M16 x 1. 5mm oil passage on the rear china wall of the GM LS engine block. Options are available to fit most after market sending units or mechanical gauge hoses (1 8" NPT female, 3 AN male, or 4 AN male). Black anodized 2024 T8 aluminum construction. Made in the USA. Features: M16 x 1. 5mm