×
Contact Us Live Chat or 1-888-737-9766
My Garage
My Account
Cart
Search Bar
Search by Part Number, Part Name, or Vehicle
Track Order Help Center

Emission Controls fit your 1991 Buick Century

Currently shopping for
1991 Buick Century
Change Vehicle
Categories Close X

Currently selected

Fuel System, Exhaust, Emission System

Other Categories

Body Moldings, Sheet Metal, Rear Compartment Hardware, Roof Hardware
Body Mounting, Air Conditioning, Audio/Entertainment
Body Wiring, Roof Trim
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cooling System, Grille, Oil System
Engine
Frames, Springs, Shocks, Bumpers, Fascias
Front End Sheet Metal, Heater
Front Suspension, Steering
Interior Trim, Front Seat Trim, Seat Belts
Maintenance Parts, Fluids, Capacities, Electrical Connectors
Rear Glass, Seat Parts, Adjuster
Rear Seat Trim, Carpet
Starter, Generator, Ignition, Electrical, Lamps
Transmission - Automatic
Windshield, Wiper, Mirrors, Instrument Panel, Console, Doors
Categories Close X

Currently selected

Fuel System, Exhaust, Emission System

Other Categories

Body Moldings, Sheet Metal, Rear Compartment Hardware, Roof Hardware
Body Mounting, Air Conditioning, Audio/Entertainment
Body Wiring, Roof Trim
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cooling System, Grille, Oil System
Engine
Frames, Springs, Shocks, Bumpers, Fascias
Front End Sheet Metal, Heater
Front Suspension, Steering
Interior Trim, Front Seat Trim, Seat Belts
Maintenance Parts, Fluids, Capacities, Electrical Connectors
Rear Glass, Seat Parts, Adjuster
Rear Seat Trim, Carpet
Starter, Generator, Ignition, Electrical, Lamps
Transmission - Automatic
Windshield, Wiper, Mirrors, Instrument Panel, Console, Doors
Parts Questions
Sort by:
Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
  • SENSOR, Computer Control Sensors
    Buick 15326386
    Buick 15326386
    Buick 15326386
    Buick 15326386
    15326386
    SENSOR, COOLANT TEMPERATURE (1.150)
    $51.06 $27.06
    1
    Add To Cart
  • Buick 15326386
    Buick 15326386
    Buick 15326386
    Buick 15326386
    15326386
    SENSOR, ENGINE COOLANT TEMPERATURE(INTERFACE W/ECM REQUIRED WHEN CHECK ENGINE LIGHT GOES W/CODES 14 OR 15)(2-WAY MALE)(MATING CONNECT W/LEADS USE 88987993)
    • Fitting Vehicle Options: A(LR8)
    $51.06 $27.06
    1
    Add To Cart
  • Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    Buick 12569240
    12569240
    SENSOR, MAP
    • Fitting Vehicle Options: A(LR8)
    $122.71 $61.84
    1
    Add To Cart
  • Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    Buick 25036751
    25036751
    SENSOR, MANIFOLD AIR TEMPERATURE(2 BLADE TERMINAL)(3/8-18 THREAD)(CONNECT USE 12102620 W/LEADS)
    • Fitting Vehicle Options: A(LR8)
    $76.29 $43.83
    1
    Add To Cart
  • Buick 19211437
    19211437
    SENSOR, EXHAUST OXYGEN
    $33.26 $18.54
  • Buick 19211437
    19211437
    SENSOR, EXHAUST OXYGEN(W/WIRE LEAD)(M18X1.5-6E)(MATING CONNECT USE 12117385)
    • Fitting Vehicle Options: A(LR8)
    $33.26 $18.54
  • SENSOR, Coolant Temperature (Engine Unit)
    Buick 15326386
    Buick 15326386
    Buick 15326386
    Buick 15326386
    15326386
    SENSOR, ENGINE COOLANT TEMPERATURE(INTERFACE W/ECM REQUIRED WHEN CHECK ENGINE LIGHT GOES W/CODES 14 OR 15)(2-WAY MALE)(MATING CONNECT W/LEADS USE 88987993)(3.682)
    • Fitting Vehicle Options: A(LR8)
    $51.06 $27.06
    1
    Add To Cart
  • Buick 25036807
    25036807
    SENSOR, COOLANT TEMPERATURE GAGE(1 OR 2 BLADE TERMINAL,3/8-18)
  • Buick 25036807
    25036807
    SENSOR, ENGINE COOLANT TEMPERATURE GAGE(1 BLADE TERMINAL)(3/8-18 THREAD)
    • Fitting Vehicle Options: A(LR8,LG7,U39)
  • GASKET, Emission System
    Buick 12337972
    Buick 12337972
    Buick 12337972
    12337972
    GASKET, EGR VALVE(USED WITH EGR VALVE HAVING ATTACHING BOLTS 58.0 MM APART)
    $5.84 $3.26
    10
    Add To Cart
  • Buick 5617102
    Buick 5617102
    5617102
    GASKET, OXYGEN SENSOR
    $8.90 $4.95
    1
    Add To Cart
  • RELAY, A/C Electrical
    Buick 14089936
    Buick 14089936
    Buick 14089936
    Buick 14089936
    14089936
    RELAY, A.C. COMPRESSOR (1.055)
  • Buick 14089936
    Buick 14089936
    Buick 14089936
    Buick 14089936
    14089936
    RELAY, A/C COMPRESSOR(5-PINION OVAL SHAPE)
    • Fitting Vehicle Options: A
  • Buick 24415470
    Buick 24415470
    Buick 24415470
    Buick 24415470
    24415470
    CLAMP, Air Cleaner Intake, CLAMP,REAR INTAKE AIR DUCT(WORM GEAR CLAMP W/SPECIAL SLOT)(66-75MM)
    • Require Quantity: 02
    • Package Quantity: 1
    $9.65 $6.46
    1
    Add To Cart
  • SWITCH, Steering Gear Oil Pressure
    Buick 10238816
    Buick 10238816
    Buick 10238816
    10238816
    SWITCH, IDLE SPEED CONTROL P/S PRESSURE
  • Buick 10238816
    Buick 10238816
    Buick 10238816
    10238816
    SWITCH, IDLE SPEED CONTROL P/S PRESSURE
    • Fitting Vehicle Options: A
  • STUD, Ignition Coil Mounting
    Buick 10065558
    Buick 10065558
    Buick 10065558
    Buick 10065558
    Buick 10065558
    10065558
    STUD, IGNITION COIL(M8X1.25X16/1.25X40)(3.275)
    $6.30 $4.00
    5
    Add To Cart
  • Buick 10498207
    10498207
    STUD, IGNITION COIL
  • HOSE, Engine Crankcase Ventilation
    Buick 25535463
    25535463
    HOSE, CRANKCASE VENT
    $16.21 $13.05
    1
    Add To Cart
  • Buick 10043061
    10043061
    HOSE, PCV
    • Fitting Vehicle Options: A(LR8)
  • GROMMET, Engine Crankcase
    Buick 10112531
    10112531
    GROMMET, PCV VALVE(TO ROCKER ARM COVER)
    • Fitting Vehicle Options: A(LR8)
    • Require Quantity: 02
    • Package Quantity: 1
    $13.05
    1
    Add To Cart
  • Buick 1381487
    Buick 1381487
    1381487
    GROMMET, INTAKE MANIFOLD CRANKCASE VENT VALVE
  • Buick 14001192
    14001192
    GROMMET, CRANKCASE VENT PIPE
  • TUBE, Engine Crankcase Ventilation
    Buick 12515202
    12515202
    TUBE, PCV(COMPONENT PARTS SERVICED)(CONSISTS OF A TUBE AND TWO CONNECTORS)
    • Fitting Vehicle Options: A(LR8)
    $95.16 $53.05
    1
    Add To Cart
  • Buick 10112532
    10112532
    TUBE, PCV(COMPLETE)(COMPONENT PARTS SERVICED)(14 INCH LONG W/PCV)
    • Fitting Vehicle Options: A(LR8)
  • Buick 25535462
    25535462
    TUBE, CRANKCASE VENT
  • SWITCH, Engine Oil Pressure/Temperature
    Buick 19244517
    19244517
    SWITCH, O/PRESSURE INDICATOR & FUEL PUMP (3 BLADE TERMINAL,1/4-18)
    $48.68 $29.42
    1
    Add To Cart
  • Buick 19244517
    19244517
    SWITCH, FUEL PUMP & ENGINE OIL PRESSURE INDICATOR(1/4-18 DRY SEAL THREAD)(3 BLADE TERMINAL)
    • Fitting Vehicle Options: A(LR8)
    $48.68 $29.42
    1
    Add To Cart
  • MODULE, Emission Control System
    Buick 88999170
    88999170
    MODULE, ENGINE CONTROL(LABELED 1227748)(REMANUFACTURED-NOT FOR SALE WHERE IMPORTS ARE RESTRICTED)
    • Fitting Vehicle Options: A(LR8)
    $213.26 $74.38
    1
    Add To Cart
  • Buick 88999199
    88999199
    MODULE, ENGINE CONTROL(REMANUFACTURE)
    $209.60 $118.12
    1
    Add To Cart
  • CLIP, Early Fuel Evaporation
    Buick 10093242
    10093242
    CLIP, EVAP EMISSION HOSE(PLASTIC)
  • Buick 22530509
    22530509
    CLIP, EVAP EMISSION HOSE(POSITIVE #19)(METAL)(3.120)
  • CANISTER, Fuel Tank Evaporator/Purge Control
    Buick 17089075
    17089075
    CANISTER, FUEL VAPOR W/PURGE CONTROL
  • Buick 17113149
    17113149
    CANISTER, EVAP EMISSION(CODE 17088095)
    • Fitting Vehicle Options: A(LR8)
Standard Parts
  • Buick 11609411
    Buick 11609411
    Buick 11609411
    Buick 11609411
    Buick 11609411
    11609411
    NUT, HEXAGON W/CONICAL WASHER (M6X1) 9 PHOSPHATE ELECTRO ORGANIC
    $2.38 $1.51
    10
    Add To Cart
  • Buick 11515758
    Buick 11515758
    11515758
    BOLT, HEX FLANGED HEAD,M8X1.25X30,28THD,18 O.D.,MACHINE POINT,10.9,7114M(ELECTRONIC IGNITION MODULE)
    • Require Quantity: 03
    • Package Quantity: 10
    $1.86 $1.18
    10
    Add To Cart
  • Buick 1470030
    Buick 1470030
    Buick 1470030
    1470030
    CLAMP, WORM TYPE(11/16" TO 1 5/16")(AS REQUIRED)
    • Replaced By: 11610236
    $7.38 $4.69
    1
    Add To Cart
  • Buick 11609970
    Buick 11609970
    11609970
    CLAMP, WORM GEAR,14.22-26.92 DIAMETER, 13.25 THICK, STAINLESS STEEL.(CRANKCASE VENT ELBOW)
    $4.55 $2.89
    15
    Add To Cart
  • Buick 3907444
    Buick 3907444
    Buick 3907444
    Buick 3907444
    3907444
    NUT, PUSH IN,SQUARE,UN THREAD,M9.5 SQUARE HOLE,NYLON(AS REQUIRED)
    $6.91 $4.38
    1
    Add To Cart
  • Buick 3907444
    Buick 3907444
    Buick 3907444
    Buick 3907444
    3907444
    NUT, PUSH IN,SQUARE,UN THREAD,M9.5 SQUARE HOLE,NYLON(FUEL VAPOR CANISTER RETAINER)
    • Require Quantity: 02
    • Package Quantity: 1
    $6.91 $4.38
    1
    Add To Cart
  • Buick 12337828
    Buick 12337828
    12337828
    SCREW, HEXAGON W/FLAT WASHER,TAP,M6.3X1.81X20,13.2 O.D.,ALUMINUM BASECOAT POINT,STEEL,PZ0R(FRONT AIR INTAKE DUCT BRACKET)
    • Require Quantity: 02
    • Package Quantity: 1
    • Replaced By: 22527475
    $10.91 $6.94
    1
    Add To Cart
  • Buick 15614709
    Buick 15614709
    15614709
    BOLT, W/CONICAL SPRING WASHER,M8X1.25X20,15.58THD,18 O.D.,9.8,ZO(CRANKCASE VENT TUBE SUPPORT)(1.270)
    $9.86 $6.26
    1
    Add To Cart
  • Buick 11514527
    11514527
    NUT, HEXAGON FLANGE (M5X0.8) 9 ZINC
    $9.18 $5.83
    1
    Add To Cart
  • Buick 11514527
    11514527
    NUT, HEXAGON FLANGE M5X0.8 GRD 9 ZINC COATED (DIPPED OR PLATED)(ECM)
    • Require Quantity: 02
    • Package Quantity: 1
    $9.18 $5.83
    1
    Add To Cart
  • Buick 11501869
    Buick 11501869
    11501869
    WASHER, EXTERNAL TOOTHED LOCK,M8,15 O.D.,.85THK,STEEL,ZINC(ECM)
    • Require Quantity: 02
    • Package Quantity: 1
    $6.24 $3.48
    1
    Add To Cart
  • Buick 9439274
    Buick 9439274
    9439274
    HOSE, FUEL & OIL (7/32)(*02)
    $42.54 $28.07
    1
    Add To Cart
  • Buick 11508905
    11508905
    SCREW, HEX WASHER HEAD TAP M6.3X1.81X30 12.5-OUTSIDE DIAMETER ALUMINUM BASECOAT POINT PHOSPHATE ZINC ORGANIC(AS REQUIRED)
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 1991 Buick Century parts. Parts like Emission Controls are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.5L, 6 Cyl 3.3L. Model Code: CUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR.