4R70W Clutch Module 1996, new and ready to install. Fits the 4R70W. Ships fast from the USA.
This is the steel side of a 4R70W or 4R75W clutch rebuild. The listing photo shows Raybestos Powertrain's STMFORD09 steel clutch pack, labeled for the 4R70W/4R75W from 1996 on: new steel plates for the intermediate, direct, forward and reverse clutches in one box. If you are rebuilding a 1996-or-later F-150, Expedition, Crown Victoria, Grand Marquis, Town Car, Mustang or Navigator transmission and the old steels came out blue, warped or polished, this replaces them as a set.
Every clutch pack in the 4R70W alternates lined frictions with flat steel plates. The steels are the hard working surface the friction grips, and they carry the heat away when the clutch applies. A steel that has overheated turns blue and can warp; a steel that has been slipped on for thousands of miles glazes smooth. Either way, new frictions stacked against it will not hold, so a rebuild that reuses bad steels often comes back with the same slip.
Raybestos lists exactly what STMFORD09 holds:
Lay each old steel on a flat surface and check for rock and heat color. If the frictions burned, find out why before reassembly: Sonnax and Transmission Digest have both documented low line pressure and valve body gasket faults that burn the direct and forward clutches on 2001-later units. Our 4R70W 3-4 clutch failure guide lays out each cause, and the F-150 common problems guide covers the truck side.
Raybestos catalogs STMFORD09 for the 4R70W and 4R75W from 1996 on. Two details matter. The direct steels are for the Grob-style Mark Series drum, and the forward/reverse steels are for the stamped steel drum, so a unit with a different drum style may need other plates. Compare plate count, OD and tooth count against the specs above, and if you are unsure, send us your year and VIN. The listing title says 1996 because that is where this pack starts; it is not a 1996-only part. See all parts on the 4R70W/4R75W collection page.
| Fits | 4R70W 1996 |
| Part type | Clutch Module |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a steel module. The photo shows Raybestos STMFORD09, which Raybestos lists as the 4R70W/4R75W 1996-on steel clutch pack. Buy frictions separately.
No. Raybestos catalogs it for the 4R70W and 4R75W from 1996 on. The direct steels are for the Grob Mark Series drum and the forward/reverse steels for the stamped steel drum, so confirm your drums.
Raybestos lists 18: 4 intermediate, 6 direct, 5 forward/reverse and 3 reverse steels.
Only if they are flat, have no heat bluing and still have a light crosshatch texture. Glazed or warped steels will make new frictions slip.
MERCON V. Ford warns not to use MERCON LV or ULV where MERCON V is specified.
