i have a few if you need some but try this first. pull the hose off, then grab the end of the threaded part with small channel locks and spin the whole clamping part with your other hand. this broke mine free and did not damage the threads.

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-Trevor

OBK #12
1980 300SD 333,XXX miles - Totaled
1986 Mazda RX-7 212,XXX miles - impounded and auctioned off
2005 Jeep Liberty CRD Limited 33,000- SEGR, Provent, Fumoto