722.6 Banner Rebuild Kit 2002-03, new and ready to install. Fits the 722.6. Ships fast from the USA.
A 2002 or 2003 Mercedes five-speed that slips when it gets warm, drops into gear late in the morning or leaves black, burnt-smelling fluid on the dipstick is usually telling you the clutch packs and piston seals are finished. This banner kit is built for 722.6 units of exactly those two model years, the transmission Chrysler and Jeep call the NAG1 and that is coded W5A 580 or W5J 400 on the identification plate. It goes a step past a basic banner kit: alongside the complete overhaul gasket and seal kit and a standard set of friction plates, it includes new B1 pistons and the pump housing gasket, two items that are easy to forget until the unit is already on the bench.
The 722.6 shifts by handing torque from one multi-disc clutch or brake to the next while the control unit trims working pressure and overlap pressure for each change. There are three clutches and three brakes, and every one of them depends on a piston seal holding pressure and a friction pack that grips without glazing. Once the lining wears or a molded piston lip hardens, the handoff takes longer, the control unit adapts until it runs out of room, and the clutch that is slipping overheats the fluid for every other pack. This kit renews the lined plates and all of the rubber and paper in one job. The B1 brake pistons are included because their bonded seals harden like the rest, and reusing them in an otherwise fresh unit is a common reason a rebuild comes back.
A flare on the 2-3 or 4-5 upshift with clean red fluid is a different problem. Transmission Digest and Sonnax both trace that symptom to wear in the working pressure regulator bore and the overlap sleeves in the valve body, which a soft-parts kit does not correct.
Read stored codes first and check the level at the specified temperature through the fill tube, using the method in the factory oil-level procedure. Speed sensor and conductor plate faults, and the pin-connector leak that wicks fluid into the harness, all produce shift complaints that look internal and cost far less to fix. Our 722.6 common problems and fixes guide walks through that sequence. If the pan shows heavy friction material and the unit slips in more than one gear, the overhaul is justified, and the 722.6 rebuild cost guide shows where the money goes so you can compare doing it yourself against a shop.
This kit is cataloged for 2002-2003 722.6 transmissions, including the W5A 580 and W5J 400 versions, and the catalog also references the European-market 2002-2003 Jeep Grand Cherokee. In North America the 722.6 of those years sat behind C-, E-, S-Class, CLK and ML engines. Friction sets for this family changed over production, so match the code on your transmission plate and give us your year and VIN before ordering if you are unsure. Steel plates are not part of this kit. If yours are heat-marked or warped, the 722.6 master overhaul kit with frictions and steels covers both. Every Mercedes part we carry is in the 722 transmission parts collection.
| Fits | 722.6 2002-03 |
| Part type | Banner Rebuild Kit |
| 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.
The kit is cataloged for 2002-2003 722.6 units, which includes the NAG1 versions coded W5A 580 and W5J 400. Read the code on your transmission plate and send us the year and VIN so we can confirm the friction set matches your unit before it ships.
A full transmission overhaul gasket and seal kit, a standard set of friction clutch plates, new B1 pistons and the pump housing gasket. Steel plates are not included.
Only if your original steels are blued, warped or scored. Clean flat steels can be reused. If they are damaged, the master overhaul kit with frictions and steels is the better buy.
Most 722.6 variants are specified for ATF approved to MB 236.14. Check the oil level at the specified temperature through the fill tube after the adaptation reset and drive cycle.
Not if the fluid is clean and the flare is the only symptom. That pattern usually comes from valve body bore and sleeve wear, so have the valve body checked or replaced alongside the overhaul.
