-8AN Male to -8AN Female1/8" NPT in Hex

Oil-filled - 1.5" - 0 to 15 PSI - 1/8 NPT male thread,

Earl's Oil Pressure Adapter Male AN -4 to 1/8" NPT 1" Longer

-3AN Male to 1/8" NPT – Straight

-4AN Male to 1/8" NPT – Straight

Earls Straight Male AN -4 to M16 x 1.5mm w/ Crush Washer

Earls - 1/8" NPT in Hex-4AN Male to -4AN Female

Earl's GM LS Oil Pressure Gauge Adapter Fittings

Earls Straight 1/8" NPT Female to M16 x 1.5mm w/ Crush Washer.