Arrow76R
Pre-takeoff checklist
I messed up! I ordered 4 Tempest URHM 38S Fine Wire spark plugs from Aircraft Spruce and installed them in my '69 Arrow's IO-360 C1C engine BUT when I started to attach the plug leads I discovered (to my dismay) that I had ordered the wrong plugs and should have ordered Tempest UREM 38S plugs!! The plug caps on the wiring harness are 5/8 inch but the plugs are 3/4 inch!! But, having installed the plugs, neither Aircraft Spruce nor Tempest will take them back 
I had to order 4 new plugs so I need to sell the 4 UHRM 38S plugs. Obviously they have NEVER been run or dropped. The original cost was $85 each and I will sell all 4 for $200 including shipping. The plugs are still in their (opened) envelopes.
I had to order 4 new plugs so I need to sell the 4 UHRM 38S plugs. Obviously they have NEVER been run or dropped. The original cost was $85 each and I will sell all 4 for $200 including shipping. The plugs are still in their (opened) envelopes.