I did a little checking on the price of Bosch O2 sensors. Part #13133 downstream. Bosch4less.com $48.05 O'Reilly $48.69 Checker (sister comp. to Advance) $59.99. Part #13115 upstream. Bosch4less.com $55.85 O'Reilly $56.50 Checker $66.99. These are all OE direct fit. (correct wire harness no splicing). Bosch for less has free shipping over $35.00. O'Reilly has local stock with free use of O2 sensor sockets. I will buy from O"Reilly. O'Reilly had the motorcraft AGSF32FM plat. plugs at $3.99 ea. Autolight XP104 at checker $7.59. I have found locally that if you do not shop checker's price that some items are well priced and others run about double of anywhere else. The above parts are for '96 SE with 2.5 V-6. The reason I shopped the price is that there are 2 of each sensor on the car. $10.00 overcharge adds up. (free oil change) Thanks Dan