48RE Overhaul Kit 1994-99, new and ready to install. Fits the 48RE. Ships fast from the USA.
Owners of 1994-99 Dodge Ram trucks often search for a 48RE kit because the later name is the one everyone knows, but trucks from these years carry the A518 four-speed or its heavy-duty sibling, the A618, which Chrysler later renamed 46RE and 47RE. This heavy-duty kit is an electrical and governor package for those units, not a seal-and-gasket overhaul. It is the right purchase when a truck that tows or hauls has started dropping out of overdrive, running hot because the converter never locks, or setting governor codes after years of heat.
You get the overdrive/lockup solenoid assembly on its harness with the round multi-pin case plug, a governor pressure solenoid, a governor pressure transducer, a threaded speed sensor, a governor body gasket, a pan gasket and a felt filter. The upgrade side of the kit is two replacement springs described as a 3-4 accumulator spring and a lock-up spring, and a bent steel retainer that holds the boost valve spring in place. Clutch packs, bands and rubber seals are not included.
The A618 behind a Cummins or V10 sees more load than the light-duty A518, and every part in this kit sits in the pan, bathed in the hottest fluid in the transmission. Coil insulation breaks down, the transducer drifts, and the solenoid pack connector loosens with years of heat cycles. On an electronic-governor unit, the truck's computer depends on that transducer to know what governor pressure it is commanding. When the reading drifts, the 1-2 and 2-3 shifts land in the wrong place. When the lockup coil weakens, the converter slips at cruise and the fluid gets hotter still, which speeds up everything else.
Confirm the overdrive switch is on, read codes, and look at the fluid. Burnt fluid with clutch material in the pan means the problem is beyond solenoids. Our heavy-duty Ram common problems guide covers what fails under towing loads, and the speed sensor guide explains how to tell a bad sensor from a wiring fault.
Sold for 1994-99 A518/A618 units, the same family as the 46RE, 47RE and later 48RE. Two checks matter. First, the governor solenoid and transducer only fit transmissions that have the electronic governor body under the valve body; earlier units with a mechanical governor on the output shaft cannot use them. Second, Sonnax notes that 1999-and-earlier RE units use the early pressure sensor with an oval connector, while 2000-and-later units use a rectangular plastic one, so a 2000-up truck needs a different kit. If you are unsure, send your year and VIN. More parts for this family are on the 48RE family collection.
| Fits | 48RE 1994-99 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Reference | A518 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. A 1997 heavy-duty Ram uses the A618, later called the 47RE. The 48RE arrived in 2003. This kit is listed for the 1994-99 A518/A618 family.
No. It is solenoids, the governor solenoid and transducer, a speed sensor, filter, gaskets, two upgraded springs and a steel boost valve retainer. Seals and clutches are not included.
If the cause is the overdrive solenoid or a governor sensor fault, yes. If the overdrive clutch is worn, the fluid will usually be burnt and the unit needs a rebuild.
Not as listed. Units from 2000 on use the later rectangular pressure sensor. Send your VIN if your build date is close to the changeover.
Use ATF+4 or a licensed equivalent. Check it hot with the engine idling, the truck level and the selector in Neutral.
