Interesting. In fact, bizarre!
Your part has ID# E1TA 5A041-BB, which cross ref's to PN E
1TZ 5A041-A. But that part number does not appear in the master parts catalog.
As we've discussed, the MPC shows the trucks should have come out with E
0TZ 5A041-A, and if you wanted to replace them later they'd sell you F2TZ 5A041-A, which came out in '92. But no where is listed E1TZ.
I think the line that shows 81/85 U150 * E0TZ 5A041-A r/b F2TZ 5A041-A should actually be 81/85 U150 * E
1TZ 5A041-A r/b F2TZ 5A041-A. That's the only thing I can think of that makes sense.
Saying it another way, I wonder if 1981 and later Broncos came with the E1 mount and all the other trucks came with the E0 mount.
Does that make sense? Anyone have info otherwise?
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI