1990 Buick Century Steering Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

This page lists 100 steering parts for the 1990 Buick Century, across 22 part types, covering both the 2.5L 151cid L4 and the 3.1L 189cid V6. Every part shows its brand, manufacturer part number and fitment notes.

On the 1990 Buick Century, the steering system connects driver to road through the rack, pump, tie rods, and column components. 38 parts of the 100 listed are Tie Rod End (21 parts), Rack and Pinion Bellow (9 parts) and Power Steering Pump (8 parts). The other 19 part types cover the remaining 62 parts.

Power Steering Fluid

Brand Part Number Markets Notes Buy
EDELMANN Popular Fits: 2.5L 151cid L4 70694
🇺🇸 US 🇨🇦 CA
Quart
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PRESTONE Popular Fits: 2.5L 151cid L4 AS261
🇺🇸 US 🇨🇦 CA
32 Ounce
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IDEMITSU Fits: 2.5L 151cid L4 30040106972
🇺🇸 US
12 oz
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PRESTONE Fits: 2.5L 151cid L4 AS260Y
🇺🇸 US 🇨🇦 CA
12 oz.
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PRESTONE Fits: 2.5L 151cid L4 AS262Y
🇺🇸 US 🇨🇦 CA
Power Steering Fluid Plus Stop Leak12 Fluid Ounce
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PRESTONE Fits: 2.5L 151cid L4 AS263Y
🇺🇸 US 🇨🇦 CA
Power Steering Fluid Plus Stop Leak1 Quart
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PRESTONE Fits: 2.5L 151cid L4 AS266Y6
🇺🇸 US 🇨🇦 CA
1 Gallon
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This table covers the fluids specified for this steering system. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable.

Power Steering Pressure Hose

Brand Part Number Markets Notes Buy
EDELMANN Fits: 2.5L 151cid L4 91655
🇺🇸 US 🇨🇦 CA
Pump To Gear
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SUNSONG Fits: 2.5L 151cid L4 3401809
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Power Steering Pressure hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.

Power Steering Pressure Sensor

Brand Part Number Markets Notes Buy
ACDELCO Fits: 2.5L 151cid L4 212493
🇺🇸 US 🇨🇦 CA
Gold
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ROSTRA Fits: 2.5L 151cid L4 501282
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 2.5L 151cid L4 PSS5
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 2.5L 151cid L4 1S6580
🇺🇸 US 🇨🇦 CA
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This table covers the Power Steering pressure sensors. Typical signs include a check-engine light for MAP or fuel-rail pressure, or a limp mode under load. A vacuum leak or a clogged reference line will fake a bad pressure sensor.

Power Steering Pump

New

Brand Part Number Markets Notes Buy
LARES Popular Fits: 2.5L 151cid L4 12757
🇺🇸 US 🇨🇦 CA
Pump with ReservoirUpgraded Lightweight Aluminum Housing
Fitment notes — LARES 12757
Pump with ReservoirUpgraded Lightweight Aluminum HousingIncludes Reservoir Cap
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Remanufactured

Brand Part Number Markets Notes Buy
CARDONE Fits: 2.5L 151cid L4 20878
🇺🇸 US 🇨🇦 CA
Remanufactured Power Steering Pumpwithout Reservoir
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LARES Fits: 2.5L 151cid L4 2316
🇺🇸 US 🇨🇦 CA
Pump without ReservoirRemanufactured
Fitment notes — LARES 2316
Pump without ReservoirRemanufactured
with Variable Effort Steering
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LARES Fits: 2.5L 151cid L4 2310
🇺🇸 US 🇨🇦 CA
Pump without ReservoirRemanufactured
Fitment notes — LARES 2310
Pump without ReservoirRemanufacturedReservoir Labeled # WC 26016158with PR Stamped On Reservoir
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LARES Fits: 2.5L 151cid L4 2670
🇺🇸 US 🇨🇦 CA
Pump with ReservoirRemanufactured
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MAVAL Fits: 2.5L 151cid L4 9738M
🇺🇸 US 🇨🇦 CA
Remanufactured Power Steering Pump
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TERREPOWER Fits: 2.5L 151cid L4 7330127
🇺🇸 US 🇨🇦 CA
Remanufacturedwithout Reservoir
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TERREPOWER Fits: 2.5L 151cid L4 73307127
🇺🇸 US 🇨🇦 CA
Remanufacturedwith Reservoir
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This table covers the Power Steering pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit.

Power Steering Pump Mounting Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L 151cid L4 11515758
🇺🇸 US 🇨🇦 CA
M8X1.25X30
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This table covers the Power Steering Pump Mounting bolts.

Power Steering Pump Seal Kit

Brand Part Number Markets Notes Buy
SUNSONG Popular Fits: 2.5L 151cid L4 8401344
🇺🇸 US 🇨🇦 CA
Pump Rebuild KitIncludes Saginaw Pump Bushing
Fitment notes — SUNSONG 8401344
Pump Rebuild KitIncludes Saginaw Pump Bushing
1st Design, with 16mm Shaft
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EDELMANN Fits: 2.5L 151cid L4 8554
🇺🇸 US 🇨🇦 CA
1st Designwith 16mm Shaft
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EDELMANN Fits: 2.5L 151cid L4 8624
🇺🇸 US 🇨🇦 CA
2nd Designwith 19MM Shaft
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EDELMANN Fits: 2.5L 151cid L4 8561
🇺🇸 US 🇨🇦 CA
Includes O-rings, Shaft Seals and Saginaw Housing Bushing
Fitment notes — EDELMANN 8561
Includes O-rings, Shaft Seals and Saginaw Housing Bushing
1st Designwith 16mm Shaft
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SUNSONG Fits: 2.5L 151cid L4 8401343
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Power Steering Pump Seal kits.

Power Steering Pump Shaft Bearing

Economy

Brand Part Number Markets Notes Buy
WJB / INMOTION PARTS Fits: 2.5L 151cid L4 RB62032RS
🇺🇸 US 🇨🇦 CA
Power Steering
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Standard Replacement

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 2.5L 151cid L4 203FF
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO 203FF
Gold
Power Steering
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NATIONAL Popular Fits: 2.5L 151cid L4 203FF
🇺🇸 US 🇨🇦 CA
Power Steering
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BCA Fits: 2.5L 151cid L4 NB203FF
🇺🇸 US 🇨🇦 CA
Power steeringwith Integral Reservoir
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SCHAEFFLER Fits: 2.5L 151cid L4 62032RSR
🇺🇸 US 🇨🇦 CA
12.000 mm Width40 mm Outside Diameter
Fitment notes — SCHAEFFLER 62032RSR
12.000 mm Width40 mm Outside Diameter17 MM Inside Diameter16.88mm Shaft Diameter
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SKF Fits: 2.5L 151cid L4 62032RSJ
🇺🇸 US 🇨🇦 CA
16.88mm SH. Diameter.
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This table covers the Power Steering Pump Shaft 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.

Power Steering Pump Shaft Seal

Brand Part Number Markets Notes Buy
EDELMANN Popular Fits: 2.5L 151cid L4 8709
🇺🇸 US 🇨🇦 CA
2nd Designwith 19MM Shaft
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EDELMANN Fits: 2.5L 151cid L4 8712
🇺🇸 US 🇨🇦 CA
1st Designwith 16mm Shaft
View on
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FVP Fits: 2.5L 151cid L4 8709
🇺🇸 US 🇨🇦 CA
with 19MM Shaft2nd Design
View on
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FVP Fits: 2.5L 151cid L4 8712
🇺🇸 US 🇨🇦 CA
with 16mm Shaft1st Design
View on
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SCHAEFFLER Fits: 2.5L 151cid L4 SS2161
🇺🇸 US 🇨🇦 CA
with 0.750 In Shaft6.35 mm Width
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SUNSONG Fits: 2.5L 151cid L4 8401345
🇺🇸 US 🇨🇦 CA
1st Design, with 16mm Shaft
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This table covers the seals at the Power Steering Pump 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.

Power Steering Reservoir Cap

Brand Part Number Markets Notes Buy
DORMAN Fits: 2.5L 151cid L4 82605
🇺🇸 US 🇨🇦 CA
with 2.40 In StemDiameter: 2 in
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SKP Fits: 2.5L 151cid L4 SK82605
🇺🇸 US 🇨🇦 CA
with 2.40 In Stemwith 2 In. Diameter
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ULTRA-POWER Fits: 2.5L 151cid L4 82575
🇺🇸 US 🇨🇦 CA
Diameter: 1.67"2" Stem
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ULTRA-POWER Fits: 2.5L 151cid L4 82605
🇺🇸 US 🇨🇦 CA
Power Steering Pump Capwith 2.40" Stem
Fitment notes — ULTRA-POWER 82605
Power Steering Pump Capwith 2.40" Stem2" Diameter
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This table covers the Power Steering Reservoir caps. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.

Power Steering Return Hose

Brand Part Number Markets Notes Buy
EDELMANN Fits: 2.5L 151cid L4 91551
🇺🇸 US 🇨🇦 CA
Gear To Reservoir
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FAMOUS BRAND Fits: 2.5L 151cid L4 35847
🇺🇸 US 🇨🇦 CA
Gear To ReservoirAssembly
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SUNSONG Fits: 2.5L 151cid L4 3401874
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Power Steering Return hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.

Rack and Pinion

New

Brand Part Number Markets Notes Buy
TERREPOWER Fits: 2.5L 151cid L4 N1030102
🇺🇸 US 🇨🇦 CA
Power SteeringHydraulic
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Remanufactured

Brand Part Number Markets Notes Buy
MAVAL Fits: 2.5L 151cid L4 9507M
🇺🇸 US 🇨🇦 CA
Remanufactured Rack and Pinion Assembly
Fitment notes — MAVAL 9507M
Remanufactured Rack and Pinion Assembly
with Standard Steering3.12 pinion turns lock To lock
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MAVAL Fits: 2.5L 151cid L4 9507MS
🇺🇸 US 🇨🇦 CA
with Performance Steering2.75 pinion turns lock To lock.
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This table covers the steering gear assemblies that turn the tie rods. Typical signs include fluid at a torn boot, a growl when you turn, or play that the inner tie rods do not explain. Flush the old power-steering fluid with the rack — grit in the old fluid is the usual cause of a repeat leak.

Rack and Pinion Bellow

Brand Part Number Markets Notes Buy
MEVOTECH Popular Fits: 2.5L 151cid L4 GK6298
🇺🇸 US 🇨🇦 CA
Original Grade
Fitment notes — MEVOTECH GK6298
Original Grade
Frontwith Magnetic Variable Assist Steering
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MEVOTECH Popular Fits: 2.5L 151cid L4 MK6298
🇺🇸 US 🇨🇦 CA
Supreme
Fitment notes — MEVOTECH MK6298
Supreme
Frontwith Magnetic Variable Assist Steering
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ACDELCO Fits: 2.5L 151cid L4 45A7009
🇺🇸 US 🇨🇦 CA
Gold
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BECK/ARNLEY Fits: 2.5L 151cid L4 1032673
🇺🇸 US 🇨🇦 CA
View on
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DELPHI Fits: 2.5L 151cid L4 TBR5002
🇺🇸 US 🇨🇦 CA
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DORMAN Fits: 2.5L 151cid L4 541547
🇺🇸 US 🇨🇦 CA
Fits Right
Fitment notes — DORMAN 541547
Fits:
Right
or:
Left
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FVP Fits: 2.5L 151cid L4 RPK91100
🇺🇸 US 🇨🇦 CA
Fits Right
Fitment notes — FVP RPK91100
Fits:
Right
or:
Left
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MOOG Fits: 2.5L 151cid L4 K6298
🇺🇸 US 🇨🇦 CA
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QUICK STEER Fits: 2.5L 151cid L4 K6298
🇺🇸 US 🇨🇦 CA
View on
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This table covers the rubber boots that seal the inner tie-rod joints on the rack.

Rack and Pinion Bushing

Brand Part Number Markets Notes Buy
ULTRA-POWER Popular Fits: 2.5L 151cid L4 K6225
🇺🇸 US 🇨🇦 CA
Steering Gear Mounting Bushing
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DELPHI Fits: 2.5L 151cid L4 TD5673W
🇺🇸 US 🇨🇦 CA
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FVP Fits: 2.5L 151cid L4 RBK901022
🇺🇸 US 🇨🇦 CA
Right
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MEVOTECH Fits: 2.5L 151cid L4 GK6225
🇺🇸 US 🇨🇦 CA
Original Grade
Fitment notes — MEVOTECH GK6225
Original Grade
Front
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MEVOTECH Fits: 2.5L 151cid L4 MK6225
🇺🇸 US 🇨🇦 CA
Supreme
Fitment notes — MEVOTECH MK6225
Supreme
Front
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This table covers the Rack and Pinion 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.

Rack and Pinion Gear Bearing

Brand Part Number Markets Notes Buy
EDELMANN Fits: 2.5L 151cid L4 8572
🇺🇸 US 🇨🇦 CA
Lower
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EDELMANN Fits: 2.5L 151cid L4 8571
🇺🇸 US 🇨🇦 CA
Upper
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FVP Fits: 2.5L 151cid L4 8571
🇺🇸 US 🇨🇦 CA
Upper
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FVP Fits: 2.5L 151cid L4 8572
🇺🇸 US 🇨🇦 CA
Lower
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This table covers the Rack and Pinion Gear 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.

Rack and Pinion Seal Kit

Brand Part Number Markets Notes Buy
EDELMANN Fits: 2.5L 151cid L4 8607
🇺🇸 US 🇨🇦 CA
with Performance Suspension
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EDELMANN Fits: 2.5L 151cid L4 8580
🇺🇸 US 🇨🇦 CA
without Performance Suspension
View on
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FVP Fits: 2.5L 151cid L4 8580
🇺🇸 US 🇨🇦 CA
without Performance Suspension
View on
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FVP Fits: 2.5L 151cid L4 8607
🇺🇸 US 🇨🇦 CA
with Performance Suspension
View on
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This table covers the Rack and Pinion Seal kits.

Steering Column Repair Kit

Brand Part Number Markets Notes Buy
WELLS Fits: 2.5L 151cid L4 4H1462
🇺🇸 US 🇨🇦 CA
with Tilt Wheel
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This table covers the Steering Column repair kits.

Steering Coupler

Brand Part Number Markets Notes Buy
LARES Fits: 2.5L 151cid L4 205
🇺🇸 US 🇨🇦 CA
for 3/4" 26 Spline Input Shafts with 2-3/4" OD Steering Coupling Assembly
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This table covers the couplers in the steering shaft.

Steering Damper Bellows

Brand Part Number Markets Notes Buy
ULTRA-POWER Fits: 2.5L 151cid L4 K6298
🇺🇸 US 🇨🇦 CA
Bellows Diagram REF # 2
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This table covers the Steering Damper bellows.

Steering Gear Housing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L 151cid L4 07844439
🇺🇸 US 🇨🇦 CA
Housing Cap
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This table covers the Steering Gear housings.

Steering Gear Nut

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L 151cid L4 11515744
🇺🇸 US 🇨🇦 CA
M12X1.75X14
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GM GENUINE Fits: 2.5L 151cid L4 25611428
🇺🇸 US 🇨🇦 CA
TO KNUCKLEM12X1.25X11.95
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This table covers the Steering Gear nuts.

Steering Wheel Nut / Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 2.5L 151cid L4 00419454
🇺🇸 US 🇨🇦 CA
View on
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GM GENUINE Fits: 2.5L 151cid L4 11609658
🇺🇸 US 🇨🇦 CA
Non-Flanged Nylon Insert HexM14X1.5
Fitment notes — GM GENUINE 11609658
Non-Flanged Nylon Insert HexM14X1.510 THK
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This table covers the Steering Wheel Nut rings.

Tie Rod End

Daily Driver

Brand Part Number Markets Notes Buy
MEVOTECH Popular Fits: 2.5L 151cid L4 MEV116
🇺🇸 US 🇨🇦 CA
SupremeIncludes Hardware
Fitment notes — MEVOTECH MEV116
SupremeIncludes Hardware
Front Inner
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DELPHI Fits: 2.5L 151cid L4 TA2270
🇺🇸 US 🇨🇦 CA
Outer
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DELPHI Fits: 2.5L 151cid L4 TA2208
🇺🇸 US 🇨🇦 CA
Inner
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MEVOTECH Fits: 2.5L 151cid L4 MES2111RL
🇺🇸 US 🇨🇦 CA
SupremeGreaseable
Fitment notes — MEVOTECH MES2111RL
SupremeGreaseableHardware Included
Front Outer
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SUSPENSIA Fits: 2.5L 151cid L4 X07TR6509
🇺🇸 US 🇨🇦 CA
Front InnerFemale Rack End Type
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SUSPENSIA Fits: 2.5L 151cid L4 X07TE6504
🇺🇸 US 🇨🇦 CA
Front Outer
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Economy

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 2.5L 151cid L4 541199
🇺🇸 US 🇨🇦 CA
Front Inner
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MEVOTECH Popular Fits: 2.5L 151cid L4 GEV116
🇺🇸 US 🇨🇦 CA
Original Grade
Fitment notes — MEVOTECH GEV116
Original Grade
Front Inner
View on
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QUICK STEER Popular Fits: 2.5L 151cid L4 EV116
🇺🇸 US 🇨🇦 CA
Front Inner
View on
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SKP Popular Fits: 2.5L 151cid L4 SEV116
🇺🇸 US 🇨🇦 CA
Front Inner
View on
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DORMAN Fits: 2.5L 151cid L4 542884
🇺🇸 US 🇨🇦 CA
Front Outer
View on
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FAMOUS BRAND Fits: 2.5L 151cid L4 RES2111RL
🇺🇸 US 🇨🇦 CA
OuterFront
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FAMOUS BRAND Fits: 2.5L 151cid L4 DWES2111RL
🇺🇸 US 🇨🇦 CA
Front Outer
View on
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FAMOUS BRAND Fits: 2.5L 151cid L4 260065117
🇺🇸 US 🇨🇦 CA
OuterFront
View on
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FOREIGN PARTS DISTRIBUTORS Fits: 2.5L 151cid L4 ES2111RL
🇺🇸 US 🇨🇦 CA
Outer
View on
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FVP Fits: 2.5L 151cid L4 IS116
🇺🇸 US 🇨🇦 CA
Front Inner
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MAS Fits: 2.5L 151cid L4 T2111
🇺🇸 US 🇨🇦 CA
Front Outer
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MEVOTECH Fits: 2.5L 151cid L4 GES2111RL
🇺🇸 US 🇨🇦 CA
Original Grade
Fitment notes — MEVOTECH GES2111RL
Original Grade
Front Outer
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SKP Fits: 2.5L 151cid L4 SES2111RL
🇺🇸 US 🇨🇦 CA
Outer
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SRT CHASSIS Fits: 2.5L 151cid L4 SBES2111RL
🇺🇸 US 🇨🇦 CA
OuterSteering TIE ROD END
Fitment notes — SRT CHASSIS SBES2111RL
OuterSteering TIE ROD ENDDIAGRAM-S572
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ULTRA-POWER Fits: 2.5L 151cid L4 ES2111RL
🇺🇸 US 🇨🇦 CA
Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
Fitment notes — ULTRA-POWER ES2111RL
Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
Outer
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This table covers the inner and outer tie-rod ends that steer each front knuckle. Typical signs include play on center, a feathered front tire, or a boot that has split and packed with grit. Replace inner and outer ends together on a high-mileage axle, then get an alignment.

Buying Steering Parts for a 1990 Buick Century

On this vehicle, the steering system connects driver to road through the rack, pump, tie rods, and column components.

  • Match the engine first. Every steering part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, replace the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Tie Rod End and Rack and Pinion Bellow .

Frequently Asked Questions

How many steering parts fit the 1990 Buick Century?

Our catalog currently lists 100 steering parts for the 1990 Buick Century across 22 subcategories and 32 brands, covering both the 2.5L 151cid L4 and the 3.1L 189cid V6. Each part is matched to the engine(s) it fits.

Do steering parts differ between 1990 Buick Century engines?

Yes. Every steering part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of steering problems on a 1990 Buick Century?

Common symptoms include play or looseness on center, a whine when turning, fluid weeping from rack boots, or uneven tire wear on the front axle. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1990 Buick Century was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 1990 Buick Century?

First match the engine — each row shows which engine(s) the part fits. Then flush old power-steering fluid when replacing a pump or rack — grit in the old fluid is the number-one cause of repeat failure. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 1990 Buick Century

Steering Parts for Other Buick Century Years

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