When using a Heavy Duty Aircraft oil cooler, this Gold Sandwich Adapter is added between the oil filter and the Gold oil filter housing. It is internally equipped with a bypass for the oil cooler, to allow much quicker oil warm ups in cool weather. Comes complete with a square O-ring gasket, AN-6 fittings, and a special CNC mounting bolt with also serves as the new oil filter threaded nipple.
Made in the USA.
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