A604 [89-UP] Automatic Transmission Ring Kit Teflon (15-Total)

When internal sealing rings fail in an A604 automatic transmission, the unit loses the hydraulic pressure it needs to hold clutch packs engaged, and no amount of adjustment corrects that until the ring is replaced. This listing is for a single Teflon sealing ring designed for the A604, 40TE, and 41TE family, covering applications from 1989 onward.

Teflon is the specified material for these rings because it expands and contracts predictably across the temperature range an automatic transmission sees in normal service. A ring that holds its shape through heat cycles keeps the bore sealed consistently, rather than allowing fluid to bypass and rob the circuit of pressure. That matters especially in the A604 design, where circuit pressure directly controls shift feel and clutch engagement timing.

This is a single component, not a rebuild kit. It does not include clutch discs, steel plates, gaskets, an Automatic Transmission Filter, a band, or any other part. If your repair requires a broader set of components, check your parts list and order accordingly before this item ships.

The part weighs 0.6 lb. Before placing your order, pull the tag on the transmission or cross-reference your vehicle records to confirm the unit code is A604, 40TE, or 41TE and that the build year is 1989 or later. Ordering against the wrong unit code is the most common reason a sealing ring does not fit, and confirming the code takes less time than processing a return.

• Replacing a worn or cracked sealing ring in the A604 unit stops internal pressure loss and helps avoid the fluid bypass that causes delayed engagement and slipping.
• This listing covers the sealing ring only. It does not include clutch discs, steels, gaskets, Automatic Transmission Filter, or any other rebuild components. Review your parts list before ordering.
• Teflon sealing rings maintain a consistent seal under heat cycles that cause harder materials to crack or distort, which is why this material is specified for these bores in the A604 family.
• One Teflon sealing ring, 0.6 lb shipped. Fits A604, 40TE, and 41TE automatic transmission units built from 1989 onward.
• Before ordering, confirm the transmission code on the unit matches A604, 40TE, or 41TE and verify the model year falls within the 1989-and-up application range.

What's in the box

• 1 x Ring Kit, A604 Teflon

Compatible vehicles

• Fits Voyager [95-03], Caravan [89-03], Caravan (Grand) [90-03], Sebring [95-03], Town & Country [89-03], Avenger [95-03], Stratus [95-03], Grand Voyager - Mini Van [89], Voyager - Mini Van [89], 200 [11-14], Cirrus [95-00], Grand Voyager [97-00].