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Engine Assembly fit your 1991 Buick Century
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1991 Buick Century
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Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
Part Description
$46.88 $24.851
$10.24 $6.051
$10.24 $6.051
11515755
BOLT, Engine Lift, BOLT, ENGINE LIFT BRACKET REAR HEX FLANGED HEAD (M8X1.25X14) 10.9 PLATE STEEL$13.52 $13.051
12338076
PIN, Engine Clutch Housing or Transmission, PIN,TRANS LOCATING(19.5 MM X 18.5 MM)(TO CYL BLOCK)- Require Quantity: 02
- Package Quantity: 1
$2.26 $1.641
- $2.26 $1.641
12378521
SEALANT, Maintenance Products, SEALANT,ROOM TEMPERATURE VULCANIZING ENGINE SILICONE 5.3OZ CART()$24.73 $14.086
- 12378521
SEALANT, Maintenance Products, SEALANT,ROOM TEMPERATURE VULCANIZING ENGINE SILICONE 5.3OZ CART(ENGINE COOLANT THERMOSTAT HOUSING)$24.73 $14.086
$12.60 $6.68
- $12.60 $6.68
$7.20 $4.921
$15.83 $9.9210
24505924
THERMOSTAT, Engine Coolant Temperature, THERMOSTAT,(195 DEGREE)(USE TOGETHER WITH GASKET 25535126)$48.56 $24.361
- GASKET, Engine Oil Pan Drain Plug
$5.48 $3.431
$2.63 $1.4010
19211437
SENSOR, Computer Control Sensors, SENSOR,EXHAUST OXYGEN(W/WIRE LEAD)(M18X1.5-6E)(MATING CONNECT USE 12117385)$33.92 $18.91
$33.92 $18.91
$7.23 $4.5310
25531956
BOLT, Engine Connecting Rod Cap, BOLT,CONNECT ROD(3/8-24X1.68,1.18 THREAD,20R (PART OF 5))(0.659)$3.71 $2.361
12337972
GASKET, Emission System, GASKET,EGR VALVE(USED WITH EGR VALVE HAVING ATTACHING BOLTS 58.0 MM APART)$6.12 $3.3710
$61.75 $37.311
14090906
SEAL, Engine Front Cover & Crankshaft Seal, SEAL,CRANKSHAFT FRONT OIL(TIMING GEAR COVER)(61.57/61.37 MM O.D.)$35.47 $21.431
- CAP, Engine Oil Filler
- THERMOSTAT, Engine Coolant Temperature
10207373
THERMOSTAT, ENGINE COOLANT(195 DEGREE)(IDENTIFY BY WATER OUTLET WITH ROOM TEMPERATURE VULCANIZING SEALANT NO GASKET ON THERMOSTAT)(FOR 2ND DESIGN SEE 10101864)- Fitting Vehicle Options: A(LR8)(1ST DES)
$20.12 $10.661 
10101864
THERMOSTAT, ENGINE COOLANT(IDENTIFY BY UNSEALED WATER OUTLET AND GASKET ON THERMOSTAT, FOR 1ST DESIGN SEE 10207373)- Fitting Vehicle Options: A(LR8)(2ND DES)
$18.11 $2.041
$31.65 $19.845
$5.87 $2.825
24502164
BOLT, Engine Camshaft & Valve Rocker Cover, BOLT,VALVE ROCKER ARM COVER(W/WASHER)(HEX WASHER HEAD,1/4-20X1.0 W/DOG POINT/.85 OUTSIDE DIAMETER SPECIAL BODY WASHER,6010M,PO 6174M)(INCLUDE 11)(LG7)$5.47 $3.421
- SPARK PLUG,Glow)
5614046
SPARK PLUG, GASOLINE ENGINE IGNITION(8 PACKING - R43TS6)(STANDARD PLUG)- Require Quantity: 04
- Package Quantity: 1
- Replaced By: 19354431
$4.18 $2.301 - 88901022
SPARK PLUG, GASOLINE ENGINE IGNITION(PLATINUM PLUG)- Require Quantity: 04
- Package Quantity: 1
- Replaced By: 19313640
$15.10 $8.311
- COVER, Engine Valve Rocker & Camshaft
- GUIDE, Engine Valve Push Rod Cover
- BRACE, Engine Mounting
12554553
PIN, Engine Cylinder Head, PIN,CYL HEAD LOCATING(DOWEL 1/4X9/16)(STEEL)(CHAMFERED ENDS)(LG7)(0.738)$10.74 $6.741
$40.49 $24.461
$12.86 $6.821
$37.83 $18.751
$4.97 $3.141
24501189
BOLT, Engine Crankshaft Pulley And Balancer, BOLT,CRANKSHAFT BALANCER(TO CRANKSHAFT)(3/4-16X2.7)
$4.18 $2.308
$1.95 $1.2210
$17.94 $11.691
$6.32 $2.445
$7.19 $4.57
- PLUG, Engine Oil Pan Drain
$6.30 $4.005
- CORD, Engine Coolant Heater
$3.08 $1.8210
24504922
BOLT, Engine Mounting, BOLT,ENGINE MOUNT STRUT BRACKET(TO CYL HEAD HEX FLANGED HEAD M10X1.5X36,FULL THREAD,10.9 PD)(LG7)(8.900)$5.42 $2.8710
25036751
SENSOR, Computer Control Sensors, SENSOR,MANIFOLD AIR TEMPERATURE(2 BLADE TERMINAL)(3/8-18 THREAD)(CONNECT USE 12102620 W/LEADS)$71.89 $42.041
$4.74 $3.451
$13.051
- $31.37 $15.561
$6.06 $4.351
3951644
BOLT, Engine Coolant, BOLT,WATER OUTLET(HEX FLANGED HEAD 5/16-18X1.12 280M PC .65 OUTSIDE DIAMETER FULL THREAD,PLATE STEEL)(LG7)(8.900)$6.02 $3.825
$10.28 $6.451
$7.35 $4.611
$7.35 $4.611
$1.33 $0.85
25036807
SENSOR, Coolant Temperature (Engine Unit), SENSOR,ENGINE COOLANT TEMPERATURE GAGE(1 BLADE TERMINAL)(3/8-18 THREAD)
25036807
SENSOR, Coolant Temperature (Engine Unit), SENSOR,COOLANT TEMPERATURE GAGE(1 OR 2 BLADE TERMINAL,3/8-18 THREAD)
$4.26 $2.161
$9.501
$24.87 $15.811
10037163
COVER, Engine Valve Push Rod Cover, COVER,VALVE PUSH ROD(432.5MM X106MM,2 ROUND CORNERS,2 FLAT CORNERS)(USE ROOM TEMPERATURE VULCANIZING)$13.051
$19.821
10040235
ROD, Engine Valve Push Rod, ROD,VALVE PUSH(8.30 IN LONG)- Require Quantity: 08
- Package Quantity: 1
$13.051
$9.60 $4.101
10042875
SEAL, Engine Valve, SEAL,INTAKE VALVE STEM OIL(*KIT1)- Require Quantity: 04
- Package Quantity: 1
$13.051
$30.23 $19.211
$14.49 $7.671
- GASKET, Engine Cylinder Head
$3.92 $2.505
- PISTON, Engine Piston
$31.28 $12.941
10112531
GROMMET, Engine Crankcase, GROMMET,PCV VALVE(TO ROCKER ARM COVER)- Require Quantity: 02
- Package Quantity: 1
$13.051
10112551
GASKET, Engine Coolant Thermostat Housing, GASKET,ENGINE COOLANT THERMOSTAT HOUSING(TO CYL HEAD)(BETWEEN COOLANT OUTLET & THERMO HOUSING)$5.68 $3.011
$24.31 $13.051
- BEARING KIT, Engine Connecting Rod
$32.80 $16.261
$7.03 $4.461
12337818
BOLT, Engine Cylinder Head, BOLT,CYL HEAD(M11X1.5X100 PLAIN)- Require Quantity: 08
- Package Quantity: 1
$4.46 $2.821
$3.94 $2.511
12338012
STUD, Engine Cylinder Head, STUD,CYL HEAD(POSITIVE#9(HEXAGON,M11X1.5X 75&M10X1.5X18,OIL,W/SEALANT)(M11X1.5)$4.10 $2.611
$31.00 $15.371
$30.00 $18.811
- BEARING KIT, Engine Connecting Rod
$106.49 $52.801 
$25.21 $15.811
$133.27 $73.291
$24.24 $14.651
- LIFTER, Engine Valve Lifter
14002525
BEARING, Engine Camshaft & Balance Shaft Front, BEARING,CAMSHAFT- Require Quantity: 03
- Package Quantity: 1
$1.71 $1.091
$8.06 $5.121
15596518
STUD, Intake & Exhaust Manifold, STUD,EXHAUST MANIFOLD(TO CYL HEAD)(POSITION #3)(M10X1.5X56.5)$13.051
$9.35 $5.941
19244517
SWITCH, Engine Oil Pressure/Temperature, SWITCH,FUEL PUMP & ENGINE OIL PRESSURE INDICATOR(1/4-18 DRY SEAL THREAD)(3 BLADE TERMINAL)$46.24 $32.181
$37.70 $20.741
$13.051
$13.051
- BEARING, Engine Camshaft & Balance Shaft Front
- PISTON, Engine Piston
24501365
BOLT, Engine Flywheel, BOLT,FLYWHEEL(TO CRANKSHAFT)(HEXAGON,5/16-18X.635,LOW HEAD W/UNDERCUT,STEEL)(8.900)$38.93 $24.748
$14.88 $4.291
$5.72 $3.5910
$16.46 $10.4610
$25.44 $16.171
$1.75 $1.121
$6.67 $4.041
$13.051
$0.66 $0.421
- $0.66 $0.421
$16.21 $13.051
444776
PLUG, Engine Cylinder Head, PLUG,ENGINE BLOCK OIL GALLERY(1/4-18 SHORT THREAD,.41 LONG,STEEL,ZINC COATED (DIPPED OR PLATED) 4342M)$7.19 $4.571
$13.051
93439312
PLUG, Plug Threaded, PLUG,1/2-14 X 39/64(INTAKE MANIFOLD CORE HOLE)(4.104)- Require Quantity: 02
- Package Quantity: 1
$49.78 $24.471
10000569
BOLT, Engine Connecting Rod Cap, BOLT,CONNECT ROD(11/32X24X2.0 PC)- Require Quantity: 08
- Package Quantity: 1
10028056
RETAINER, Engine Valve Lifter, RETAINER,VALVE LIFTER GUIDE- Require Quantity: 02
- Package Quantity: 1
10029208
KEY, Engine Crankshaft Pulley And Balancer, KEY,CRANKSHAFT PULLEY HUB(4.78MM THICK,19.84 LG,PLN STEEL)
- RING KIT, Engine Piston
10042877
SEAL, Engine Valve, SEAL,EXHAUST VALVE STEM OIL(*KIT1)- Require Quantity: 04
- Package Quantity: 1
10043026
FITTING, Intake Manifold Vacuum, FITTING,INTAKE MANIFOLD VACUUM(ELBOW 1/4-18 NPTF(EXTERNAL) TO 6.35 OUTSIDE DIAMETER TUBE,30 TL,STEEL,ZINC COATED (DIPPED OR PLATED).)
- VALVE, Intake
- VALVE, Exhaust
10044611
STUD, Engine Valve Push Rod Cover, STUD,VALVE LIFTER GUIDE RETAINER(W/WASHER)(HEXAGON W/WASHER,6X1X18.5,6X1X14.75,18 OUTSIDE DIAMETER,9.8,PC)- Require Quantity: 04
- Package Quantity: 1
10044622
BOLT, Engine Valve Adjusting, BOLT,VALVE ROCKER ARM PIVOT(M8X1.25X36)- Require Quantity: 08
- Package Quantity: 1
- BRACKET, Engine Mounting
10101343
BOLT, Intake & Exhaust Manifold, BOLT,EXHAUST MANIFOLD(POSITION #1,2,6)(HEXAGON W/LOCK WASHER M18X1.5X28)
10101771
BOLT, Engine Crankshaft And Camshaft Balancer, BOLT,BALANCE SHAFT HOUSING(0.413)- Require Quantity: 02
- Package Quantity: 1
10101879
GASKET, Engine Coolant Pump, GASKET,WATER PUMP INLET(NOTE:1ST DESIGN IDENTIFY BY SEALANT CAVITY IN PUMP INLET(USE ROOM TEMPERATURE VULCANIZING).2ND DESIGN HAS-FLAT SURFACE FOR GASKET)
10111514
BRACKET, Accelerator Pedal Lever, BRACKET,ACCELERATOR CONTROL CABLE PULLEY(THROTTLE CABLE & IDLER MOUNTING)(3.452)
- TUBE, Engine Crankcase Ventilation
10112540
BOLT, Engine Flywheel, BOLT,FLYWHEEL(HEXAGON,M10X1.5X14.75,FULL THREAD,11.9,PLAIN)- Require Quantity: 06
- Package Quantity: 1
10456019
SENSOR, Distributor (also Knock Sensor), SENSOR,ELECTRONIC SPARK CONTROL KNOCK(DETONATION)(BUTTON TYPE TERMINAL,1/4-18 THREAD)
10465017
STARTER, Starter Motor, STARTER,(REMANUFACTURED-NOT FOR SALE WHERE IMPORTS ARE RESTRICTED)(DELCO SERIES 5MT; TYPE 200)
11514779
BOLT, Engine Mounting, BOLT,HEXAGON,TAP M10X1.5X30,PLATE STEEL(ENGINE MOUNT STRUT BRACKET BRACE)
12360337
HEAD, Engine Cylinder, HEAD,CYL(EXHAUST MANIFOLD BOLT THREADS ARE M10X1.5-6H)(INCLUDES HEAD,INSTRUMENT SHEET&PLUGS-{EXCEPT VALVES})
12378577
SEALANT, Maintenance Products, SEALANT,PLASTIC VALVE COVER SEALANT(ROOM TEMPERATURE VULCANIZING)(4.76 OUNCE)(85 GRAMS)()
- 12506942
GASKET KIT, Engine Cylinder Head, GASKET KIT,CYL HEAD(INCLUDE 19,22,32,33,47,68)(INCLUDES GASKETS,RETAINERS&SEALS)
12508076
HOUSING KIT, Engine Crankshaft And Camshaft Balancer, HOUSING KIT,ENGINE BALANCE(INSIDE DIAMETER BY 39 TEETH & 30 DEGREE HELIX ANGLE ON BALANCE GRS,MUST MESH W/CRANK GEAR)(INCLUDE 47,54,56,60)(COVER & BAFFLE ASM REQ 4-M6X1X24 & 1-M6X1X13 SELF TAP BOLTS NOT INCLUDE IN KIT)
- 12508076
HOUSING KIT, Engine Oil Pump, HOUSING KIT,ENGINE BALANCE(INSIDE DIAMETER BY 39 TEETH & 30 DEGREE HELIX ANGLE ON BALANCE GRS,MUST MESH W/CRANK GEAR)(INCLUDE 47,54,56,60)(COVER & BAFFLE ASM REQ 4-M6X1X24 & 1-M6X1X13 SELF TAP BOLTS NOT INCLUDE IN KIT)
$8.76 $4.88
- 19333512
SEALANT, Maintenance Products, SEALANT,THREAD(VIBRA-TITE 420)(1.69 OUNCE(ELECTRONIC IGNITION MODULE)$28.71 $16.00
- RING KIT, Engine Piston
24501366
BOLT, Engine Camshaft Gear, BOLT,CAMSHAFT SPROCKET(ALSO HOLDS BALANCE SHAFT GEAR(.3 THICK HEXAGON HEAD,1/2-20X1.64,1.49 THREAD W/1.25 OUTSIDE DIAMETER FLAT WASHER,300M,PHOSPHATE HEAVY ZINC))
24501615
BOLT, Engine Camshaft Thrust, BOLT,CAMSHAFT THRUST PLATE(C/SKIRT OVAL, 5/16-18X.75, 280M PC,TORX(T30)
24504712
BOLT, Engine Front Cover, BOLT,W/WASHER ENGINE FRONT COVER TO CYL BLOCK(HEXAGON W/.65 OUTSIDE DIAMETER FLAT WASHER,5/16-18 X 3.07,FULL OR 1.0 THREAD,300M,PO)
24504717
STUD, Engine Front Cover, STUD,ENGINE FRONT COVER THROUGH FRONT TO BLOCK(HEXAGON W/.65 OUTSIDE DIAMETER FLAT WASHER,5/16-18X1.53 & .31X.66 W/GROOVE,300M,PC)
- FILTER, Engine Oil Filter
25521361
PLUG, Engine Camshaft & Balance Shaft Hole, PLUG, CAMSHAFT REAR BEARING LOCATING (EXPANSION CUP)
25530610
BOLT, Intake Manifold Vacuum, BOLT,VACUUM SOURCE HARNESS MANIFOLD(TO INTAKE MANIFOLD )(HEXAGON 17 OUTSIDE DIAMETER,M6X1X32,PHOSPHATE ORGANIC)(LG7)
25532090
GASKET, Multi PORTION Fuel Injection Throttle Body, GASKET, THROTTLE BODY (TO INTAKE MANIFOLD)
25532288
STUD, Engine Cooling, STUD,DRIVE BELT TENSIONER(DRIVE BELT TENSION TO HEAD)(W/W 210D,M10X1.5X68,M8X1.25X15,89TL)(LG7)
25532958
STUD, Engine Coolant, STUD,WATER OUTLET(W/WASHER,5/16-18X2.6,M8X1.25X.52,9.8,PLATE STEEL,1050 STEEL,.64 OUTSIDE DIAMETER)(LG7)
- 25534211
SPACER, Engine Mounting, SPACER,ENGINE MOUNT STRUT BRACKET(BOLT TO HEAD(10.8 INSIDE DIAMETER,19 OUTSIDE DIAMETER,12.5 THICK,12L14,PLATE STEEL))(LG7)
25534836
STUD, Engine Lift, STUD,ENGINE LIFT REAR BRACKET(HEX FLANGED HEAD M10X1.5X20,M8X1.25X15,10.9,PLATE STEEL,FULL THREAD,21.3 OUTSIDE DIAMETER))
25536321
PIN, Engine Cylinder Head, PIN,CYL HEAD LOCATING(DOWEL 1/4"X 1/2"(STEEL)(CHAMFERED ENDS)(LG7)(8.939)$7.39 $4.69
522780
PIN, Engine Cylinder Head, PIN,CYL HEAD LOCATING(5/16X11/16)- Require Quantity: 02
- Package Quantity: 1
527599
NUT, Engine Connecting Rod Bolt, NUT,CONNECT ROD(HEXAGON 11/32-24)- Require Quantity: 08
- Package Quantity: 1
9440899
PIN, Engine Oil Pressure, PIN,SPRING 3/32X3/4 STAINLESS STEEL PLAIN(OIL PRESSURE RELIEF VALVE)
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 1991 Buick Century parts. Parts like Engine Assembly 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.