My Garage
My Account
Cart
Engine Assembly fit your 1991 Buick Regal
Currently shopping for
1991 Buick Regal
Change VehicleVehicle Options
4-Speed Automatic Transmission, THM440-T4/4T60Vehicle Options
4-Speed Automatic Transmission, THM440-T4/4T60Categories Close X
Currently selected
Other Categories
Body Moldings, Sheet Metal, Rear Compartment Hardware, Roof Hardware
Body Mounting, Air Conditioning, Audio/Entertainment
Brakes
Brakes, Rear Axle, Propeller Shaft, Wheels, Tires
Cooling System, Grille, Oil System
Frames, Springs, Shocks, Bumpers
Front End Sheet Metal, Heater
Front Suspension, Steering
Fuel System, Exhaust, Emission System
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
Part Description
- SENSOR, Coolant Temperature (Engine Unit)
- SENSOR, Computer Control Sensors
14024244
PIN, Engine Cylinder Head, PIN,CYL HEAD LOCATING(DOWEL)(SPLIT,15X12.5,CHAM,STEEL)- Require Quantity: 04
- Package Quantity: 1
$7.04 $4.241
- PIN, Engine Clutch Housing or Transmission
- BOLT, Starter Motor
8654382
PLUG, Transmission Case, PLUG,ENGINE BLOCK OIL GALLERY(ENGINE BLOCK OIL GALLERY)- Require Quantity: 02
- Package Quantity: 1
$7.20 $4.511
$15.83 $10.0610
- FILTER, Engine Oil Filter
19353734
COIL, Ignition Coil, COIL,IGNITION(COMPONENT PARTS SERVICED)(SEE GROUP 2.000 "COIL"FOR DETAIL ILLUSTRATED VIEW.)- Require Quantity: 03
- Package Quantity: 1
- Replaced By: 19418991
$117.34 $55.851
11516109
BOLT, Generator Mounting, BOLT,GENERATOR SUPPORT(TO CYL HEAD(HEX FLANGED HEAD M10X1.5X65,21.5 O.D.,CADMIUM,10.9)(HEX FLANGED HEAD M10X1.5X65)(8.900)$6.52 $4.1410
- GASKET, Engine Oil Pan Drain Plug
- SEAL, Heater
- KEY, Engine Crankshaft Pulley and Balancer
24507563
THERMOSTAT, Engine Coolant Temperature, THERMOSTAT,ENGINE COOLANT(195 DEGREE, W/SEAL)(INCLUDE 109)- Replaced By: 19435095
$37.96 $12.071
- BOLT, Engine Connecting Rod Cap
- LIFTER, Engine Valve Lifter
- GASKET, Engine Camshaft & Valve Rocker Cover
- SENSOR, Fuel Pump Pressure
- SENSOR, Engine Oil Pressure/Temperature
- CAP, Engine Oil Filler
$164.11 $94.301
- SEAL, Engine Front Cover & Crankshaft Seal
- VALVE, Engine Crankcase
- COVER, Engine Valve Rocker & Camshaft
$4.91 $3.111
$7.38 $4.691
1470030
CLAMP, Engine Oil Filler Tube, CLAMP,PCV TUBE(WORM TYPE, 11/16IN TO 1 5/16IN)(WORM TYPE)(11/16" TO 1 5/16")(8.948)- Replaced By: 11610236
$7.38 $4.691
$71.01 $45.12
- GASKET, Engine Oil Filter
- INDICATOR, Engine Oil Level
- BOLT, Engine Main Bearing Cap
- BOLT, Engine Camshaft & Valve Rocker Cover
$11.45 $7.281
- SENSOR, Distributor (also Knock Sensor)
- BOLT, Engine Coolant Pump
- PUMP KIT, Engine Coolant
24100002
SEAL, Engine Oil Filler, SEAL,OIL FILLER CAP(O RING)(ALSO PART OF 40)(27.94MM INNER DIAMETER)(SIZE #320)(1.745)- Require Quantity: 02
- Package Quantity: 5
$5.47 $2.725
- BOLT, Engine Crankshaft And Camshaft Balancer
24500055
BOLT, Engine Valve Lifter, BOLT,VALVE LIFTER GUIDE RETAINER(TO CYL BLOCK)(5/16-18X.855 W/FLAT WASHER)(0.659)- Require Quantity: 02
- Package Quantity: 1
$16.17 $10.211
- BOLT, Emission Control System
$18.78 $10.471
- PUMP, Engine Oil Pump
- GASKET, Engine Coolant Pump
- SEAL, Engine Rear Main Bearing
- SEAL, Engine Coolant Thermostat Housing
$6.02 $3.195
- WIRE, Spark Plug or Coil
- PIN, Engine Front Cover
- TENSIONER, Engine Cooling
- SPARK PLUG,Glow)
19158029
SPARK PLUG, GASOLINE ENGINE IGNITION(PLATINUM PLUG)- Fitting Vehicle Options: W(L27)
- Require Quantity: 06
- Package Quantity: 1
- Replaced By: 19300875
$13.20 $7.361 
19355205
SPARK PLUG, GASOLINE ENGINE IGNITION(STANDARD PLUG)- Fitting Vehicle Options: W(L27)
- Require Quantity: 06
- Package Quantity: 8
$4.18 $2.338
19300875
SPARK PLUG, GASOLINE ENGINE IGNITION(PLATINUM PLUG)- Fitting Vehicle Options: W(L27)
- Require Quantity: 06
- Package Quantity: 1
$13.20 $7.361
19354418
SPARK PLUG, GASOLINE ENGINE IGNITION- Fitting Vehicle Options: W(LH0)
- Require Quantity: 06
- Package Quantity: 1
$4.18 $2.331
19329681
SHIELD, Spark Plug Ignition Wire, SHIELD,SPARK PLUG WIRE- Require Quantity: 03
- Package Quantity: 1
$11.54 $6.431
- GEAR, Engine Crankshaft And Camshaft Balancer
25534749
GROMMET, Engine Camshaft & Valve Rocker Cover, GROMMET,VALVE ROCKER ARM COVER BOLT- Require Quantity: 12
- Package Quantity: 5
$2.53 $1.615
$13.44 $8.541
- HOSE, Throttle Body Coolant Supply
- BOLT, Engine Crankshaft Pulley and Balancer
- SPROCKET, Engine Camshaft
25526395
BOLT, Distributor (also Knock Sensor), BOLT,CAMSHAFT POSITION SENSOR(TO FRONT COVER)(HEXAGON-W/FLAT WASHER W/ADHESIVE,1/4-20X.69,.55THD,5 O.D.,300M,PLAIN)
- PLUG, Engine Oil Pan Drain
- STUD, Engine Valve Adjusting
10054525
ARM KIT, Engine Valve Rocker, ARM KIT,VALVE ROCKER(W/BALL)- Require Quantity: 12
- Package Quantity: 1
$14.84 $13.051
- BOLT, Engine Oil Pump
$1.76 $1.1210
17091147
VALVE, Emission Control System, VALVE,EGR(W/O GASKET)(W/ELECTRICAL CONNECTION)(GASKET 24503788 REQUIRED)
- BOLT, Exhaust Manifold Bolt
- BOLT, Engine Cylinder Head
- GASKET, Emission System
- STUD, Engine Mounting
- TUBE, Engine Oil Level
- BOLT, Engine Front Cover
- $19.49 $12.381
- PLUG, Plug Threaded
- PULLEY, Fan and Coolant Pump
- SEAL, Throttle Body Coolant Supply
- NUT, Engine Valve Adjusting
19178978
SEAL KIT, Multi Port Fuel Injection Fuel Rail, SEAL KIT,FUEL INJECTOR(O RING)(CONTAINS QTY 16 SEALS)(BLUE O-RING CAN BLACK ENAMEL USED TO SERVICE BLACK/BROWN O-RINGS)$46.06 $24.411
$17.511
- BOLT, Engine Cooling
- BOLT, Rear Axle Shaft Bearing
- STUD, Engine Oil Pan
$1.33 $0.85
- STUD, Intake & Exhaust Manifold
$8.77 $3.211
- BOLT, Intake & Exhaust Manifold
- VALVE, Exhaust
$13.661
- PISTON, Engine Piston
- GUIDE, Engine Valve Push Rod Cover
- GASKET, Manifold to Cylinder Head
- PIPE, Heater
- CORD, Engine Coolant Heater
- GASKET KIT, Manifold to Cylinder Head
10104430
GASKET KIT, INTAKE MANIFOLD PLENUM(FREE OF ASBESTOS)(UPPER)- Fitting Vehicle Options: W19(LH0)(TYPE 1 VIN 400001-800000)
$13.32 $8.471 - $43.77 $24.501
- 12513084
GASKET KIT, INTAKE MANIFOLD(INCLUDES INLET & RH/LH PLENUM GASKETS)- Fitting Vehicle Options: W19(LH0)(TYPE 1 VIN 400001-800000)
$68.81 $31.911 - 12520275
GASKET KIT, INTAKE MANIFOLD(INCLUDES UPPER AND LOWER MANIFOLD GASKETS)- Fitting Vehicle Options: W19(LH0)(TYPE 2 VIN 800001 & GREATER), W57(LH0)
$104.97 $65.781 - 12507234
GASKET KIT, INTAKE MANIFOLD PLENUM(FREE OF ASBESTOS)(LH & RH UPPER)- Fitting Vehicle Options: W57(LH0), W19(LH0)(TYPE 2 VIN 800001 & GREATER)
- BRACKET, Engine Mounting
- GASKET, Engine Coolant By-Pass
- SCREEN, Engine Oil Pump
$7.26 $4.541
- CRANKSHAFT, Engine
10146900
CRANKSHAFT- Fitting Vehicle Options: W19(LH0)(TYPE 1 VIN 400001-800000), W19(LH0)(TYPE 2 VIN 800001 & GREATER), W57(LH0)
$723.33 $455.591 
- GASKET, Engine Oil Pan
- RING KIT, Engine Piston
- ADAPTER, Engine Oil Filter
- GASKET, Multi Port Fuel Injection Throttle Body
$36.64 $18.171
- STARTER, Starter Motor
11515793
BOLT, Exhaust Pipe, BOLT,EXHAUST CROSSOVER PIPE FLANGE(M8X1.25X4,10.9)(8.900)- Require Quantity: 04
- Package Quantity: 1
$6.38 $4.051
$13.051
- SEAL, Engine Valve
- BEARING KIT, Engine Crankshaft Main
$31.00 $15.371 
12480252
BEARING KIT, CRANKSHAFT(#1,#4 STD)(REPLACE BRGS STAMPED "STD",".016 MM US"& ".032MM US"FOR 96 & PRIOR)- Fitting Vehicle Options: W(LH0)
- Require Quantity: 02
- Package Quantity: 1
$52.33 $33.261- $205.24 $129.861
- $186.20 $117.821
- $54.88 $34.891
- $34.07 $21.661
- 89017699
BEARING KIT, CRANKSHAFT(STD)(POSITION # 4)(USED W/SHINY, SMOOTH CAP USING 7/16-14 BOLT)- Fitting Vehicle Options: W(L27)(2ND DES)
$68.96 $41.671 - 12350097
BEARING KIT, CRANKSHAFT(#4)(STD)(USED W/ROUGH,CAST BEARING CAP USING 1/2-13 BOLT)- Fitting Vehicle Options: W(L27)(1ST DES)
88984040
BEARING KIT, CRANKSHAFT(#1,#4)(.25MM UNDERSIZE)- Fitting Vehicle Options: W(LH0)
- Require Quantity: 02
- Package Quantity: 1
- GASKET KIT, Engine Cylinder Head12351005
GASKET KIT, CYL HEAD- Fitting Vehicle Options: W19(L27)(TYPE 2 VIN 800,001 & GREATER)(2ND DES)
$191.45 $94.951 - 12351017
GASKET KIT, CYL HEAD(CONSISTS OF CYL HEAD GASKETS ONLY W/INSTRUCTION SHT)- Fitting Vehicle Options: W(L27)
$81.09 $40.211 - 12507233
GASKET KIT, CYL HEAD(ARM COVER GASKETS)(INCLUDE CYL HEAD,THERMOSTAT HOUSING,INTAKE MANUAL,EXHAUST MANUAL,EGR VALVE & ADPT, ROCKER)- Fitting Vehicle Options: W57(LH0), W19(LH0)(TYPE 2 VIN 800001 & GREATER)
$223.84 $114.501 - $226.97 $112.571
- 12351007
GASKET KIT, Engine Front Cover, GASKET KIT,ENGINE FRONT COVER(INCLUDES FRONT COVER GASKET,WATER PUMP COVER GASKET,HUB SEAL & O/FILTER ADAPTER GASKET)$31.05 $15.391
12354124
SPRING KIT, Engine Valve, SPRING KIT,VALVE(W/CAP)(SPRING SUPPLIED IN KIT MUST BLACK ENAMEL USED WITH TYPE OF VALVE CAP IN KIT(FOUR IDENTIFICATION MARKS ON TOP)- Require Quantity: 12
- Package Quantity: 1
$11.49 $9.411
- BEARING KIT, Engine Connecting Rod
12480255
BEARING KIT, CONNECT ROD(STD)- Fitting Vehicle Options: W(LH0)
- Require Quantity: 06
- Package Quantity: 1
$41.93 $26.651 
89017700
BEARING KIT, CONNECT ROD(STD)- Fitting Vehicle Options: W(L27)
- Require Quantity: 06
- Package Quantity: 1
$24.07 $15.301- 18008493
BEARING KIT, CONNECT ROD(.026MM UNDERSIZE)- Fitting Vehicle Options: W(LH0)
- Require Quantity: 06
- Package Quantity: 1
- 88984044
BEARING KIT, CONNECT ROD(.25MM OVERSIZE)- Fitting Vehicle Options: W(LH0)
- Require Quantity: 06
- Package Quantity: 1
89017689
BEARING KIT, CONNECT ROD(0.026MM UNDERSIZE)- Fitting Vehicle Options: W(L27)
- Require Quantity: 06
- Package Quantity: 1
- BEARING, Engine Camshaft & Balance Shaft Front
- HEAD, Engine Cylinder
13586175
RETAINER, Chassis/Engine Wiring Harness, RETAINER,ECM WIRING HARNESS CONNECT(RED)(5-WAY FEMALE)(W/O LEADS)(USED W/12015860 TERMINAL)(2.530)$8.49 $5.401
- SPROCKET, Engine Crankshaft/Timing
- DAMPENER, Engine Timing
- VALVE, Intake
- ROD, Engine Valve Push Rod
1640161
STUD, Ignition Coil Mounting, STUD,IGNITION COIL(HEXAGON M8X1.25X16 BOTH ENDS 9.8,PHOSPHATE ORGANIC,FULL THREAD)(0.206)$6.91 $4.381
- WIRE KIT, Spark or Glow Plug Ignition
- SWITCH, Engine Oil Pressure/Temperature
- SEALANT, Maintenance Products
1989866
SEAL, Distributor (also Knock Sensor), SEAL,CRANKSHAFT POSITION SENSOR(O RING)(ALSO PART OF 4)(2.170)$17.46 $9.251
$9.79 $6.211
$8.80 $5.591
- PLUG, Engine Block
- BOLT, Engine Camshaft Gear
24503681
NIPPLE, Heater Coolant Flow, NIPPLE,HEATER WATER ENGINE INLET(USE TOGETHER WITH 1052080 SEALER)(1/2 THREAD,59.5 TL)(OLD PART APPEAR LARGER DUE TO HEAT EXPANSION)(W/ O-RING & RETAINER)$15.39 $10.341
- KEY, Engine Valve Spring Cap
24504719
PAN, Engine Oil, PAN,OIL(HAS INCREASED CLEARANCE IN BAFFLE FOR 3/4" OIL PUMP SUCTION PIPE)(INCLUDE 55,56)(LESS GASKET)$136.14 $48.111
$20.161
$13.23 $13.051
$12.601
- SEAL, Engine Oil Level
$18.61 $7.991
$2.44 $1.0010
$7.18 $4.351
- FITTING, Engine Coolant By-Pass
- STUD, Engine Front Cover
- BRACKET, Generator Mounting
- STUD, Generator Mounting
- STUD
- SHIELD, Exhaust Manifold
10065444
WASHER, Intake & Exhaust Manifold, WASHER,LOWER INTAKE MANIFOLD- Require Quantity: 04
- Package Quantity: 1
- MANIFOLD, Engine Fuel Intake Manifold
- ENGINE, Cylinder and Case
10089656
ENGINE, (SERVICE PARTIAL)(PLUG ELECTRONIC SPARK CONTROL HOLE WITH 1/4-18 PIPE PLUG)(PARTIAL ENGINE CONSIST OF:PISTON & ROD ASM,CRANKSHAFT & BEARINGS,ROD BEARING & REAR SEAL,CAMSHAFT BEARINGS.)(IF TIMING CHAIN DAMPENER REQUIRED ORDER 10166353)- Fitting Vehicle Options: W19(LH0)(TYPE 1 VIN 400001-800000)
- PIPE, Fuel Line
- BRACKET, Engine Lift
- HEATER, Engine Coolant Heater
- OUTLET, Engine Coolant
10154707
CONNECTOR, Emission System, CONNECTOR,EGR VALVE PIPE(M16X1.5X.59 TO 3/4-16X.63,1.425 TL,STEEL,ALUMINUM BASECOAT)
- CAMSHAFT, Engine
- ROD, Engine Piston
- HARNESS, Engine Wiring
12332136
SHAFT KIT, Engine Crankshaft And Camshaft Balancer, SHAFT KIT,BALANCER(W/BEARING (INTAKE MANIFOLD)(INCLUDES PINION)
- GROMMET
- SEALER, Maintenance Products
- 12353129
PAN KIT, Engine Oil, PAN KIT,OIL(W/GASKET)(INCLUDES:GASKET,INSTRUCTION SHEET)(INCLUDE 48,49,50,51)(NO LEVEL SENSOR HOLE IN PAN)
- STUD, Exhaust Pipe
- BOLT, Engine Oil Pan
- PLUG, Engine Cylinder Head
14081701
PLUG, Engine Oil Distribution, PLUG,ENGINE BLOCK OIL GALLERY(.25-18X.475 FULL THREAD)(8.971)
14089825
REINFORCEMENT, Engine Oil, REINFORCEMENT,OIL PAN(FRONT)(USED AT #1,2 HOLES)- Require Quantity: 02
- Package Quantity: 1
- CAP, Engine Valve Spring
- MANIFOLD, Engine Exhaust Manifold
- CHAIN, Engine Timing
- BOLT
- BODY, Fuel Injection Air Meter
24500319
PLUG, Engine Mount Dampening, PLUG,ENGINE MOUNT STRUT ACCESS HOLE(PAN HEAD,M12X1.75X18,15.25 THREAD,9.8,PHOSPHATE HEAVY ZINC,TORX,W/SEALER)
- PLATE, Engine Camshaft Thrust
24500567
STUD, Engine Oil Filter, STUD,OIL FILTER ADAPTER(HEXAGON WASHER,5/16-18X1.53 THREAD,SHAFT W/GROOVE .44 LEN,2.2 TL,300M,CADMIUM PLATED)- Require Quantity: 04
- Package Quantity: 1
- PLUG, Engine Camshaft & Balance Shaft Hole
24501509
INJECTOR, Fuel Injection, INJECTOR,SEQUENTIAL MULTIPORT FUEL(ALSO PART OF 13)(COMPONENT PARTS SERVICED)(REQUIRES O-RING P/N 19178978)(*02)- Require Quantity: 06
- Package Quantity: 1
24501615
BOLT, Engine Camshaft Thrust, BOLT,CAMSHAFT THRUST PLATE(C/SKIRT OVAL, 5/16-18X.75, 280M)- Require Quantity: 03
- Package Quantity: 1
24503292
CONNECTOR, Engine Oil Cooler, CONNECTOR,ENGINE OIL COOLER ADAPTER(18X1.5 THREAD STRAIGHT EXTERNAL MALE & FEMALE THREAD)
- BALANCER, Engine Crankshaft And Camshaft Balancer
25525493
WASHER, Exhaust Manifold, WASHER,EXHAUST MANIFOLD HEAT SHIELD(PART OF 55)(SPRING,CUP,5.2X27.0X0.254,4.5 TALL,STAINLESS STEEL,PLAIN)(3.613)$6.70 $4.48
- 25525493
WASHER, Exhaust Pipe, WASHER,EXHAUST CROSSOVER PIPE HEAT SHIELD(ALSO PART OF 43)(SPRING,CUP,5.2X27.0X0.254,4.5 TALL,STAINLESS STEEL,PLAIN)(3.613)$6.70 $4.48
25532853
STUD, Engine Cooling, STUD,DRIVE BELT TENSIONER(TO HEAD(HEX FLANGED HEAD M10X1.5X50,M10X1.5X15,75 TL,21.5 OUTSIDE DIAMETER,9.8,PHOSPHATE HEAVY ZINC)- Require Quantity: 02
- Package Quantity: 1
25533440
BOLT, Engine Valve Adjusting, BOLT,VALVE ROCKER ARM PIVOT(HEX FLANGED HEAD W/SHIELD,3/8-16X.64 THREAD,.56 ODX1.14 SHIELD,300M,PLAIN)- Require Quantity: 12
- Package Quantity: 1
25534246
MANIFOLD, Engine Coolant By-Pass, MANIFOLD,ENGINE COOLANT(PART OF 38)(TO LOWER INTAKE MANIFOLD)
361970
NUT, Engine Connecting Rod Bolt, NUT,CONNECT ROD(ALSO PART OF 11)(M9X1X9)- Require Quantity: 12
- Package Quantity: 1
$4.01 $2.54
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 1991 Buick Regal 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: 6 Cyl 3.1L, 6 Cyl 3.8L. Model Code: 2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR.