This adapter makes it easy to attach oil lines for an auxiliary oil cooler on your 1970-76 914-4 or 1976-83 924. Machined for 3/8" pipe thread fittings, our adapter allows you to connect 10AN (5/8") oil line fittings. If you plan to use our 19-row or 25-row oil cooler or our oil thermostat to protect your auxiliary oil cooler, you'll need both the 912282 and 912283 fittings. 924 owners who install this adapter should switch to the 903122 oil filter for better clearance.