On a 6.0 that is??
On a 6.0 that is??
89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears
1-1/16"
Be sure you buy an oil pressure sending unit socket, not just a plain hex socket.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
yeah, autozone, orielly, napa... even sears if you have one near you.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709