Yeah you just unscrew the old one and put the new one on, no fluid loss. If you need one and can wait a few days I got one that I bought offline new for $10 you can have it for the cost of shipping (should be really cheap), depending on what store you go to depends on how much they cost, I got the one that's in the jeep at carquest for $16.
'89 Wrangler 4.2 .....Sold......
'08 Grand Prix GXP 5.3 V8 303 hp 323 ft-lb tq, my baby =D ..... SOLD.......
'94 wrangler 4.0, parted out/traded off
'94 Wrangler 4.0 K&N cold air, bored throttle body, head polished, Comp cam, 4.5" RE extreme duty, ubolt flip, 1" booms, 1" daystar body, M.O.R.E shock mount extenders rear, shock mount extenders on front, D35 W/ Richmond Lunchbox, 4.56 Gears, 35/12.5/15 Pro Comp M/T, Black D steelies, Front bumper W/ Stinger and winchplate (Armorology), Warn XD9000I, Dakota seats,Kenwood KDC-MP342U head unit, Soundbar with Kicker DS65's, Kicker DX200.4 Amp, Kenwood 6X9 on bottom of rollbar, Infinity 4X6's in dash, Tuffy Glovebox, 4 100W Daylighters, and a CJ hardtop.
2012 HD Night Rod Vivid black stock =D
R.I.P. Chad Daniel French 29 July 1982 - 25 Oct 2010 I'll Miss you Bro