1990 Buick Century Automatic Transmission Parts

This table covers the pistons inside a transmission accumulator. Read more

One part is listed for the 1990 Buick Century — TRANSGO 4T60ACM.

This table covers the Accumulator Piston pins. Read more

This group shows a single part: GM GENUINE 8628273.

This table covers the Accumulator Piston Seal sleeves. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8644917.

This table covers the apply bands inside the automatic transmission. Read more

7 Band parts are listed for the 1990 Buick Century, from PIONEER and ATP. PIONEER 767016 carries the "Popular" badge.

Listed part numbers: PIONEER 767016, PIONEER 767069 and ATP CX44, plus the other parts above.

This table covers the bushings in this assembly. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

10 Bushing parts for the 1990 Buick Century come from 2 brands — PIONEER and ATP. The "Popular" part is PIONEER 755056.

This table covers the Bushing kits. Read more

3 Bushing Kit parts for the 1990 Buick Century come from 2 brands — PIONEER and DURA-BOND.

This group includes DURA-BOND TK35, PIONEER 754012 and PIONEER 754017.

This table covers the gaskets that seal the Case. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

3 Case Gasket parts are listed for the 1990 Buick Century, from PIONEER and ATP.

This group includes ATP XG4, PIONEER 749109 and PIONEER 749001.

This table covers the Case plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

This group shows a single part: GM GENUINE 8611710.

This table covers the Clutch Apply plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8682801.

This table covers the Clutch Housing Thrust bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

This group shows a single part: GM GENUINE 24227685.

This table covers the pistons that apply a clutch pack. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 19368340.

This table covers the Clutch plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8683084.

This table covers the clutch-plate packs inside the transmission or transfer case. Read more

2 Clutch Plate Pack parts for the 1990 Buick Century come from RAYBESTOS POWERTRAIN.

In the Friction Plate Pack grade, RAYBESTOS POWERTRAIN supplies 1 part: grouped under the catalog's "Friction Plate Pack" designation — the notes column spells out what sets them apart. A representative part number is RAYBESTOS POWERTRAIN RCP96047.

The Steel Plate Pack section lists 1 option from RAYBESTOS POWERTRAIN — grouped under the catalog's "Steel Plate Pack" designation — the notes column spells out what sets them apart. RAYBESTOS POWERTRAIN 80K502 is listed in this group.

Listed part numbers: RAYBESTOS POWERTRAIN RCP96047 and RAYBESTOS POWERTRAIN 80K502.

This table covers the Detent cables. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

3 Detent Cable parts are listed for the 1990 Buick Century, from ATP and PIONEER.

This group includes ATP Y227, ATP Y752 and PIONEER CA1932.

This table covers the Detent Cable clips. Read more

One part is listed for the 1990 Buick Century — ATP YR100.

This table covers the seals at the Detent Cable. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Detent Cable Seal parts for the 1990 Buick Century come from 2 brands — ATP and PIONEER.

Listed part numbers: ATP SO37 and PIONEER 760013.

This table covers the seals at the Dipstick / Fluid Filler Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

3 Dipstick / Fluid Filler Tube Seal parts are listed for the 1990 Buick Century, from ATP, GM GENUINE and PIONEER.

Listed part numbers: ATP XO11, GM GENUINE 1259475 and PIONEER 762036.

This table covers the drive chains in the transfer case or oil pump. Read more

One part is listed for the 1990 Buick Century — PIONEER 769002.

This table covers the Drive Sprocket bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

GM GENUINE supplies both parts for the 1990 Buick Century.

This group includes GM GENUINE 9436851 and GM GENUINE 24214158.

This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

13 Filter parts for the 1990 Buick Century come from 6 brands — ATP, FAMOUS BRAND, VARIOUS MFR and 3 other brands. The "Popular" part is ATP JX151.

The Economy section lists 4 options from FAMOUS BRAND, ATP and VARIOUS MFR — the catalog's value-priced group. ATP TF72 is listed in this group.

In the Standard Replacement grade, ATP, WIX, PIONEER and 1 other brand supply 9 parts: built to original-equipment specification. A representative part number is ATP JX151.

This table covers the seals at the Filter. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8656613.

This table covers the flexplates that connect the crankshaft to the torque converter. Read more

2 Flexplate parts are listed for the 1990 Buick Century, from ATP and PIONEER.

Part numbers include ATP Z143 and PIONEER FRA150.

This table covers the Flexplate Mounting bolts. Read more

One part is listed for the 1990 Buick Century — ATP ZX2026.

This table covers the harness connectors at the Fluid Cooler Line / Hose. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock. Read more

2 Fluid Cooler Line / Hose Connector parts are listed for the 1990 Buick Century, from DORMAN and GM GENUINE.

Part numbers include DORMAN 800755 and GM GENUINE 19435221.

This table covers the pans that hold automatic-transmission fluid. Read more

5 Fluid Pan parts are listed for the 1990 Buick Century, from ATP, SKP, DORMAN and 1 other brand. SKP SK103012 carries the "Popular" badge.

Listed part numbers: SKP SK103012, ATP 103011 and ATP 103012, plus the other parts above.

This table covers the gaskets that seal the Fluid Pan. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

5 Fluid Pan Gasket parts for the 1990 Buick Century come from 3 brands — FEL-PRO, PIONEER and ATP. The "Popular" part is FEL-PRO TOS18656.

This group includes FEL-PRO TOS18656, ATP XG1 and FEL-PRO TOS18668 and the remaining parts above.

This table covers the Fluid Pan magnets. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 24239049.

This table covers the seals at the Fluid Pump. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 1990 Buick Century — SKF 17849.

This table covers the slides inside the transmission fluid pump. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8662901.

This table covers the gasket kits for this job. Typical signs include the leaks that sent this assembly to the bench. Confirm the kit matches the opening you are sealing; unused leftover pieces often belong to another configuration. Read more

PIONEER supplies both parts for the 1990 Buick Century.

Listed part numbers: PIONEER 748035 and PIONEER 748024.

This table covers the governors and modulators that control transmission shift pressure. Read more

6 Governor / Modulator parts for the 1990 Buick Century come from 3 brands — ROSTRA, ATP and PIONEER. The "Popular" part is ATP JX70.

Listed part numbers: ATP JX70, ROSTRA 5100690000 and PIONEER 747017, plus the other parts above.

This table covers the seals at the Input Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8656342.

This table covers the seals at the Manual Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

5 Manual Shaft Seal parts are listed for the 1990 Buick Century, from NATIONAL, BCA, GM GENUINE and 2 other brands. NATIONAL 8792S carries the "Popular" badge.

Part numbers include NATIONAL 8792S, BCA NS8792S and GM GENUINE 8644709, among others listed above.

This table covers the wear sleeves used to restore a Output Shaft seal surface. Read more

7 Output Shaft Repair Sleeve parts for the 1990 Buick Century come from 6 brands — SKF, NATIONAL, BCA and 3 other brands. The "Popular" part is NATIONAL 99139.

Part numbers include NATIONAL 99139 and BCA NS99139, among others listed above.

This table covers the seals at the Output Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

14 Output Shaft Seal parts for the 1990 Buick Century come from 10 brands — BCA, SCHAEFFLER, TIMKEN and 7 other brands. The "Popular" part is ACDELCO 3543.

This table covers the Reaction Carrier Thrust bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 8646504.

This table covers the rebuild kits for this assembly. Read more

4 Rebuild Kit parts are listed for the 1990 Buick Century, from PIONEER and ATP.

In the Deluxe Kit (Master Kit + Filter, Band & Common Bushings) grade, PIONEER supplies 1 part: grouped under the catalog's "Deluxe Kit (Master Kit + Filter, Band & Common Bushings)" designation — the notes column spells out what sets them apart. A representative part number is PIONEER 753034.

The Master Kit (Overhaul Kit + Friction & Steel Clutch Plates) section lists 1 option from ATP — grouped under the catalog's "Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)" designation — the notes column spells out what sets them apart. ATP XM5 is listed in this group.

In the Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings) grade, PIONEER supplies 1 part: grouped under the catalog's "Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings)" designation — the notes column spells out what sets them apart. A representative part number is PIONEER 750048.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: PIONEER 753034, ATP XM5 and PIONEER 750048, plus the other parts above.

This table covers the seals at the Servo Piston. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 24208959.

This table covers the Shift cables. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

4 Shift Cable parts are listed for the 1990 Buick Century, from ATP and PIONEER.

Listed part numbers: ATP Y646, ATP Y649 and PIONEER CA1134, plus the other parts above.

This table covers the Shift Improvement kits. Read more

3 Shift Improvement Kit parts for the 1990 Buick Century come from 3 brands — PIONEER, TRANSGO and ATP.

In the Daily Driver grade, PIONEER and TRANSGO supply 2 parts: grouped for everyday commuting duty. A representative part number is PIONEER 765006.

In the Heavy Duty grade, ATP supplies 1 part: rated for severe service. A representative part number is ATP XK1.

Part numbers include PIONEER 765006, TRANSGO SK440JR and ATP XK1.

This table covers the knobs on the shift lever. Read more

This group shows a single part: DORMAN 76937.

This table covers the wear sleeves used to restore a Shift Shaft seal surface. Read more

3 Shift Shaft Repair Sleeve parts are listed for the 1990 Buick Century, from SKF and SCHAEFFLER.

Part numbers include SCHAEFFLER SR3451, SKF 480050 and SKF 99050.

This table covers the seals at the Shift Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

5 Shift Shaft Seal parts are listed for the 1990 Buick Century, from ACDELCO, ATP, PIONEER and 2 other brands. ACDELCO 8792S carries the "Popular" badge.

This group includes ACDELCO 8792S, ATP XO10 and PIONEER 759018 and the remaining parts above.

This table covers the Shift solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

2 Shift Solenoid parts are listed for the 1990 Buick Century, from FAMOUS BRAND and PA CARGO.

Part numbers include FAMOUS BRAND SBC4935 and PA CARGO K84856U.

This table covers the seals at the Side Cover. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

5 Side Cover Seal parts are listed for the 1990 Buick Century, from FEL-PRO, ATP, GM GENUINE and 2 other brands. FEL-PRO TOS18669 carries the "Popular" badge.

Listed part numbers: FEL-PRO TOS18669, ATP XG3 and GM GENUINE 8644902, plus the other parts above.

This table covers the one-way sprag clutches in the transmission. Read more

One part is listed for the 1990 Buick Century — PIONEER 764013.

This table covers the Stator Support Shaft bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

2 Stator Support Shaft Bushing parts for the 1990 Buick Century come from 2 brands — ATP and PIONEER.

Part numbers include ATP CB31 and PIONEER 755081.

This table covers the Sun Gear bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

2 Sun Gear Bushing parts are listed for the 1990 Buick Century, from ATP and PIONEER.

Part numbers include ATP XB9 and PIONEER 755057.

This table covers the Torque converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering. Read more

3 Torque Converter parts for the 1990 Buick Century come from 2 brands — TC REMANUFACTURING and GM GENUINE.

Listed part numbers: GM GENUINE 08650933, TC REMANUFACTURING B21FDQB and TC REMANUFACTURING B21FZPB.

This table covers the Torque Converter bolts. Read more

One part is listed for the 1990 Buick Century — GM GENUINE 11588468.

This table covers the Torque Converter Clutch solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

5 Torque Converter Clutch Solenoid parts for the 1990 Buick Century come from 5 brands — ATP, PIONEER, ROSTRA and 2 other brands. The "Popular" part is ATP CE4.

Part numbers include ATP CE4, PIONEER 771004 and ROSTRA 520210, among others listed above.

This table covers the Torque Converter Dust covers. Read more

One part is listed for the 1990 Buick Century — DORMAN 04361.

This table covers the Torque Converter Pulse Width Modulation (PWM) solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 1990 Buick Century — ACDELCO 2141464.

This table covers the seals at the Torque Converter Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

8 Torque Converter Shaft Seal parts are listed for the 1990 Buick Century, from GM GENUINE, NATIONAL, ATP and 5 other brands. GM GENUINE 8685515 carries the "Popular" badge.

Part numbers include GM GENUINE 8685515, NATIONAL 4072N and ATP XO4, among others listed above.

This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid. Read more

12 Transmission Fluid parts for the 1990 Buick Century come from 3 brands — VALVOLINE, MOBIL and IDEMITSU. The "Popular" part is VALVOLINE 798153.

The Dexron section lists 6 options from VALVOLINE and MOBIL — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. VALVOLINE 798153 is listed in this group.

The Multi-Vehicle section lists 4 options from VALVOLINE and MOBIL — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. MOBIL 126505 is listed in this group.

The Type T-4 (Type T-IV) section lists 2 options from IDEMITSU — grouped under the catalog's "Type T-4 (Type T-IV)" designation — the notes column spells out what sets them apart. IDEMITSU 30040093750 is listed in this group.

This table covers the conditioners and additives used with this transmission fluid. Read more

7 Transmission Fluid Additive parts for the 1990 Buick Century come from LUBEGARD. The "Popular" part is LUBEGARD 19610.

Listed part numbers: LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 19689, plus the other parts above.

This table covers the mounts that hold the transmission to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

4 Transmission Mount parts are listed for the 1990 Buick Century, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand.

Listed part numbers: ANCHOR 2543, DEA / MARMON RIDE CONTROL A2543 and PIONEER 622543, plus the other parts above.

This table covers the Turbine Shaft Fluid Seal rings. Read more

3 Turbine Shaft Fluid Seal Ring parts for the 1990 Buick Century come from GM GENUINE.

Listed part numbers: GM GENUINE 8637170, GM GENUINE 8643058 and GM GENUINE 24208978.

This table covers the seals at the Turbine Shaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Turbine Shaft Seal parts for the 1990 Buick Century come from GM GENUINE.

Listed part numbers: GM GENUINE 8662686 and GM GENUINE 8677453.

This table covers the gaskets that seal the Valve Body Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Valve Body Cover Gasket parts for the 1990 Buick Century come from 2 brands — GM GENUINE and MAHLE / CLEVITE.

Listed part numbers: GM GENUINE 8678169 and MAHLE / CLEVITE W39368TC.

This table covers the gaskets that seal the Valve Body. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 1990 Buick Century — FEL-PRO TOS18661.