4L30E Banner Rebuild Kit 1990-1997, new and ready to install. Fits the 4L30E. Ships fast from the USA.
A 1990-1997 BMW 3 or 5 Series six-cylinder automatic, an early Isuzu Trooper or Rodeo, or a Honda Passport that slips on the upshifts, picks up reverse late or not at all, and leaves friction dust in the pan is usually a 4L30E ready for an overhaul. This banner rebuild kit covers the early half of the 4L30E's production. It contains everything in the overhaul kit, meaning the gaskets, seals and sealing rings, plus a full set of fiber clutch frictions.
The 4L30E is a light-duty four-speed built by GM in Strasbourg, France, rated for about 350 Nm of input torque. It is split into an adapter case at the front, which carries the pump, the overdrive roller clutch and the overrun clutch, and a main case with the reverse, second, third and fourth clutches, a band and a second valve body. Every one of those clutches uses frictions this kit replaces, and every joint between the two cases and the two valve bodies is sealed by a gasket in the kit. On these early units the frictions and lip seals are usually tired at the same time, so renewing them together is the reliable fix.
Do the cheap checks first. Check the fluid level hot and look at what is in the pan. Transmission Digest documents a leaking TCC solenoid causing a cold no-reverse that clears up warm, so test the 1990-1999 TCC solenoid before condemning the clutches. Our transmission slipping diagnosis guide shows the line pressure and stall checks that separate a hydraulic fault from worn frictions. If the unit is badly burnt, compare the cost against a swap with our rebuild vs replace vs reman breakdown.
This kit is listed for 1990-1997 4L30E transmissions. Wikipedia lists the 4L30E in that window behind the 1990-1996 BMW 525i and 518i, the 1992-1995 325i, the 1992-1998 318i, the early 328i, 528i and Z3, the 1990-up Isuzu Trooper, the 1991-up Rodeo, the 1994-up Honda Passport, and the 1997 Cadillac Catera. Two things vary within those years. First, the adapter case, center support and spacer plate differ by maker and do not interchange, so gaskets must match your case. Second, Transmission Digest notes that 2000-up Trooper and BMW units switched to a PWM converter clutch with a different pump, so 1990-1997 units are the earlier on-off design. Read the identification tag, note the vehicle maker, and send us your year and VIN to confirm. Later-year kits are on our rebuild kits page, including the 1994-2002 4L30E banner kit.
| Fits | 4L30E 1990-1997 |
| Part type | Banner Rebuild Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
The 4L30E in that window was used in BMW 3 and 5 Series six-cylinders and the early Z3, the Isuzu Trooper and Rodeo, the Honda Passport and the 1997 Cadillac Catera. Check your transmission tag or send us your year and VIN to confirm.
Everything in the overhaul kit, meaning gaskets, seals and sealing rings, plus a set of fiber clutch frictions. Steels, the band and the filter are not listed, so buy those separately if your teardown calls for them.
Transmission Digest traces this to adapter cases, center supports or spacer plates mixed between makers, since they do not interchange, and to a worn reverse piston seal surface. Match parts to your vehicle maker and inspect that surface.
This listing is for 1990-1997. Units from 2000 on in the Trooper and BMW went to a PWM converter clutch with a different pump, so look at our later-year kits and confirm with your VIN.
GM's specification sheet lists Dexron III, about 7 quarts dry with the 245 mm converter. Check the level hot after the rebuild.
