Direct-replacement filter and pan gasket for the GM 4L80E automatic on 1997-2000 trucks and vans, so a pan-drop fluid service seals back up clean without RTV.
The ATP TF-174 is the routine-maintenance kit for a GM 4L80E (RPO MT1): one pickup filter and one pan gasket, built to OE dimensions for the 1997-2000 4L80E application. It is the part to buy when a 3/4-ton or 1-ton Chevy or GMC pickup, Suburban, box van, cutaway or Hummer H1 is due for a fluid service, or when a towing truck has started to whine, engage late or run hot and the filter has never been changed.
Everything the 4L80E pump delivers, to the valve body, the clutch packs and the converter, comes through this filter first. It traps clutch lining, bushing material and the fine grey wear metal every automatic sheds. As it loads up, the pump has to pull harder, inlet flow drops, and the first thing you notice is noise and slow engagement when the fluid is hot. Left long enough, low flow becomes low line pressure, and that is how clutches start burning. On a transmission that lives behind big-block gas engines and diesels, often towing, the filter loads faster than the mileage suggests.
Check fluid level and condition hot first. Dark fluid that still smells like oil and a pan with grey fuzz on the magnet means a normal service will help. Black lining material on the pan floor or metal chips you can feel means something inside is failing and a filter will not save it. The 4L80E filter and pan service guide shows how to read the pan, and the 4L80E shift solenoid guide covers the shift complaints that point beyond the filter.
ATP lists the TF-174 for the 1997-2000 4L80E application. The 4L80E was produced from 1991 to 2013 with two families of filter, a shorter shallow-sump design and a taller deep-sump design with dimples on the bottom that hold it against the pan floor, and they do not interchange. Put the wrong height in and the pickup either sits above the oil or gets crushed against the pan. Before installing, set the old filter next to this one and compare overall height and neck length. If you are not sure what your truck has, send us the year and VIN. For trucks from 1999 on with the deeper pan, see our deep-pan 4L80E filter and gasket kit, and browse everything else on the 4L80E parts page.
If your pan is dented or leaking at the flange, replace it at the same time with the 4L80E pan with drain plug. If the pan shows heavy wear, the 4L80E overhaul gasket and seal kit is the next step.
| Fits | GM 4L80E (THM4L80E, RPO MT1), 1997-2000 OE application |
| Includes | Transmission pickup filter and pan gasket |
| Part number | ATP TF-174 |
| Brand | ATP (aftermarket, since 1955) |
| Fluid | Service with Dexron-VI |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
ATP lists it for the 1997-2000 4L80E. Later trucks may use a deep-pan filter of a different height. Compare it against your old filter or send us your year and VIN.
No. Install it dry on clean surfaces. Because it is a little thinner than the factory gasket, clean the bolt threads and flange so the pan pulls down evenly.
For trucks that tow, plow or haul, every 30,000 to 50,000 miles is a sensible interval for a pan and filter service.
The listing covers the filter and the pan gasket. Check the filter neck for a seal on arrival, and always make sure the old seal is out of the case bore.
There is a second, smaller AFL filter in the valve body that feeds the shift solenoids. A broken AFL filter or leaking end plug can cause 2nd gear starts and no upshifts.
