722.6 Sprag Clutch 2004, new and ready to install. Fits the 722.6. Ships fast from the USA.
Before anything else: this listing is titled as a sprag clutch, but the part in the box is an Alto friction clutch module, part number 141752C, made in the USA for the Mercedes-Benz 722.6 five-speed automatic (Chrysler calls it the NAG1) in its smaller W5A 330 form, listed for 2004 and later. Shoppers usually land here after a 2004-or-newer Mercedes C-Class, E-Class or CLK with the six-cylinder five-speed starts flaring on upshifts, slipping when hot, or dropping into limp-home mode with a gear ratio code. If a teardown or a pan full of lining material says the clutch packs are done, this module replaces the lined plates in one purchase.
The 722.6 uses three planetary gearsets, three multi-plate brakes and three multi-plate clutches, and it has no bands, so every ratio change is one pack releasing while another applies. The control unit times those overlaps through the solenoids on the conductor plate and expects each pack to lock within a set window. Friction plates are the half of each pack that carries the lining. As the lining glazes, burns or thins out, the pack takes longer to grab, the control unit sees the ratio change run long, and it either raises pressure (harsh shifts) or gives up and holds a limp gear. Mercedes built two cores: the W5A 330, rated at 330 Nm for four-, five- and six-cylinder engines, and the W5A 580 for V8, V12 and later turbo-diesel cars. Plate diameters and counts differ between them, so this module is for the W5A 330 only.
Several 722.6 faults look like worn clutches but are not. A failing conductor plate speed sensor sets P0715 and drops the car into limp mode with perfectly good plates, and the febi technical bulletin lists the solenoid codes P0748 through P0753 that do the same. Transmission Digest and Sonnax both document wear in the working-pressure regulator valve bore that causes 2-3 and 4-5 flare; a valve body leaking that way will burn new frictions too, so a vacuum test of the valve body belongs in any rebuild. Scan for codes, check fluid level hot, then drop the pan. Our 722.6 common problems guide and the E-Class slipping fix lay out that order.
This module is listed for the 722.6 / NAG1 W5A 330 from 2004 onward. That points to Mercedes four-, five- and six-cylinder applications of those years, not V8, V12 or the large-core diesel units, which use the W5A 580. Many Chrysler and Dodge NAG1 applications are large-core units, so Chrysler owners in particular should confirm the core before ordering. Earlier small-core units used different clutch configurations, so a 1996 to 2003 transmission may need a different module. Read the full transmission number from the tag on the case and confirm it before ordering, or send us your year, model and VIN and we will check it. For other parts in this family, visit the Mercedes 722 transmission page.
A friction module renews only the lined plates. Inspect every steel plate for blueing, heat spots and warp, and replace any that are marked. New piston seals, sealing rings and gaskets come in a separate overhaul kit such as the 722.6 overhaul kit. Soak the frictions in the correct fluid before assembly, set each pack clearance to specification, and air-check every clutch and brake. Fill with an MB 236.14 approved ATF; a Mercedes Star Bulletin warns against mixing 236.14, 236.15 and 236.16 oils. If the old packs burned because of a leaking solenoid, renew the 2004-2005 solenoid kit while the valve body is apart, and reset the transmission adaptations with a scan tool before the first drive.
| Fits | 722.6 2004 |
| Part type | Sprag Clutch |
| Condition | New |
| Brand | Alto |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. Despite the listing title, this is an Alto friction clutch module, part 141752C, for the 722.6 / NAG1 W5A 330 from 2004 on. It contains friction plates for the clutch and brake packs, not a one-way clutch.
Not if the transmission is the large W5A 580 core, which Mercedes fitted behind V8, V12 and later turbo-diesel engines and which many Chrysler NAG1 applications use. This module is for the smaller W5A 330. Check the transmission tag or send us your VIN.
No. It is the friction plate set only. Reuse steels only if they are flat and unmarked, and pair the module with an overhaul gasket and seal kit for a complete soft-parts rebuild.
Use an ATF approved to MB 236.14 for the 722.6. Mercedes' own bulletin warns against mixing it with 236.15 or 236.16 oils.
Not necessarily. Conductor plate speed sensor and solenoid faults (P0715, P0748-P0753) cause limp mode with healthy packs. Scan the codes and inspect the pan before buying plates.
