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Engine Assembly fit your 1991 Buick Lesabre

Currently shopping for
1991 Buick Lesabre
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Vehicle Options
6 Cyl 3.8L MFI; 4-Speed Automatic Transmission, THM440-T4/4T60
Vehicle Options
6 Cyl 3.8L MFI; 4-Speed Automatic Transmission, THM440-T4/4T60
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Currently selected

Engine

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
Categories Close X

Currently selected

Engine

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
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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 (2 TERMINAL)
    $51.06 $27.06
    1
    Add To Cart
  • Buick 19211437
    19211437
    SENSOR, EXHAUST OXYGEN (1 WIRE)
    $33.26 $15.80
  • Buick 11514596
    Buick 11514596
    11514596
    NUT, Engine Lift, NUT, THROTTLE BODY & EGR VALVE INLET (M8X1.25X7.5) 10 PHOSPHATE ELECTRO ORGANIC
    $12.60
    1
    Add To Cart
  • BOLT, Starter Motor
    Buick 11610633
    Buick 11610633
    Buick 11610633
    11610633
    BOLT, START MOTOR (INBOARD HOLE)(M10X114)
    $9.60 $5.09
    1
    Add To Cart
  • Buick 14001842
    14001842
    BOLT, START MOTOR (OUTBOARD HOLE) (M10X46)
  • PIN, Engine Cylinder Head
    Buick 12554553
    Buick 12554553
    12554553
    PIN, CYL HEAD LOCATING(DOWEL 1/4X9/16)(LN3)(0.738)
    $9.62 $5.82
    1
    Add To Cart
  • Buick 25536321
    Buick 25536321
    25536321
    PIN, CYL HEAD LOCATING(DOWEL 1/4"X 1/2")(STEEL)(CHAMFERED ENDS)(LN3)(8.939)
    $7.39 $4.69
    1
    Add To Cart
  • Buick 25536323
    25536323
    PIN, CYL HEAD LOCATING(DOWEL 1/4X1 3/8)(LN3)(8.939)
    $8.70 $5.53
    1
    Add To Cart
  • SEAL, Engine Rear Main Bearing
    Buick 12582320
    Buick 12582320
    12582320
    SEAL, CRANKSHAFT REAR OIL
    $34.31 $20.73
    1
    Add To Cart
  • Buick 24500058
    24500058
    SEAL, REAR BEARING CAP OIL
    $13.05
    1
    Add To Cart
  • GEAR, Engine Crankshaft And Camshaft Balancer
    Buick 24503524
    Buick 24503524
    Buick 24503524
    24503524
    GEAR, BALANCE SHAFT
    $63.74 $40.52
    1
    Add To Cart
  • Buick 24503639
    24503639
    GEAR, BALANCER SHAFT DRIVE
  • BOLT, Engine Cooling
    Buick 24504922
    Buick 24504922
    24504922
    BOLT, DRIVE BELT TENSIONER BRACKET(TO CYL HEAD)(HEX FLANGED HEAD M10X1.5X36,FULL THREAD,10.9 PD)(LN3)(8.900)
    $5.42 $3.02
    10
    Add To Cart
  • Buick 25534671
    25534671
    BOLT, HEX FLANGED HEAD (M10X1.5X20) 10.9 PHOSPHATE HEAVY ZINC
  • BOLT, Engine Cylinder Head
    Buick 25525953
    25525953
    BOLT, CYL HEAD UPPER CENTER(7/16X14X4.46 300M)
    $13.05
    1
    Add To Cart
  • Buick 25527831
    25527831
    BOLT, CYL HEAD(UPPER OUTER CORNERS)(7/16X-14X3.24")
    $13.05
    1
    Add To Cart
  • Buick 88891770
    Buick 88891770
    88891770
    BOLT, CYL HEAD LOWER ROW
    $10.28 $6.53
    1
    Add To Cart
  • SEAL, Heater
    Buick 24500321
    Buick 24500321
    24500321
    SEAL, HEATER INLET PIPE (O RING)(*02)
  • Buick 24503160
    24503160
    SEAL, HEATER OUTLET PIPE (O RING)(TEFLON COATED)(LN3)
  • Buick 11508039
    11508039
    BOLT, BOLT, HEXAGON (M10X1.5X65) 10.9 PHOSPHATE ORGANIC
    $13.05
    1
    Add To Cart
  • BEARING, Engine Camshaft & Balance Shaft Front
    Buick 24501060
    Buick 24501060
    Buick 24501060
    Buick 24501060
    Buick 24501060
    24501060
    BEARING, CAMSHAFT (POSITIVE 1 & 4)
    $39.24 $35.04
    1
    Add To Cart
  • Buick 24501061
    24501061
    BEARING, CAMSHAFT(POSITIVE 2 & 3)
    $55.87 $27.70
    1
    Add To Cart
  • Buick 24501162
    24501162
    PIN, PIN, CYL HEAD LOCATING DOWEL (1/4X1)
    $10.89 $6.92
    1
    Add To Cart
  • BOLT, Engine Front Cover
    Buick 24504716
    24504716
    BOLT, FRONT COVER (5/16X18X2.75)
    $7.70 $4.89
    1
    Add To Cart
  • Buick 24504712
    24504712
    BOLT, HEXAGON W/FLAT WASHER (5/16X18X3.07) 300M PHOSPHATE ORGANIC
  • BOLT, Engine Coolant Pump
    Buick 24504713
    Buick 24504713
    24504713
    BOLT, ENGINE FRONT COVER (TO CYL BLOCK)
    $9.36 $5.95
    10
    Add To Cart
  • Buick 25535660
    Buick 25535660
    25535660
    BOLT, HEXAGON (1/4X20X1.17) 300M PHOSPHATE ORGANIC
    $12.11 $7.69
    1
    Add To Cart
  • Buick 24500714
    24500714
    HARNESS, HARNESS,VACUUM SOURCE(CRUISE & VACUUM BRAKE)(COMPONENT PARTS SERVICED)(LN3)
  • STUD, Engine Front Cover
    Buick 24504717
    Buick 24504717
    24504717
    STUD, HEXAGON (5/16X18X1.53) 300M PHOSPHATE
  • Buick 24504717
    Buick 24504717
    24504717
    STUD, HEXAGON W/FLAT WASHER (5/16X18X1.53) 300M PHOSPHATE
  • Buick 25532537
    25532537
    STUD, HEXAGON W/FLAT WASHER (5/16X18X38.9/8X1.25X18) 10.9 PHO
  • SEAL, Throttle Body Coolant Supply
    Buick 25533988
    25533988
    SEAL, THROTTLE BODY HEAT INLET PIPE TO INTAKE
  • Buick 25533989
    25533989
    SEAL, THROTTLE BODY HEAT OUTLET & INTAKE PIPE
Standard Parts
  • Buick 11514596
    Buick 11514596
    11514596
    NUT, HEX FLANGED HEAD (M8X1.25X7.5) 10 PHOSPHATE ELECTRO ORGANIC
    $12.60
    1
    Add To Cart
  • Buick 11609970
    Buick 11609970
    11609970
    CLAMP, WORM GEAR (.30 TO .87) SST
    $4.55 $2.89
    15
    Add To Cart
  • Buick 11515754
    Buick 11515754
    11515754
    BOLT, HEX FLANGED HEAD (M8X1.25X12) 9.8 PHOSPHATE ELECTRO ORGANIC
    $7.99 $4.82
    1
    Add To Cart
  • Buick 9440227
    Buick 9440227
    9440227
    BOLT, HEX FLANGED HEAD (5/16X18X1.25) 280M PHOSPHATE ORGANIC
    $13.05
    1
    Add To Cart
  • Buick 96626203
    Buick 96626203
    Buick 96626203
    96626203
    BOLT, HEX FLANGED HEAD (M10X1.5X50) 9.8 PHOSPHATE ORGANIC
    $24.06 $15.29
    1
    Add To Cart
  • Buick 11504595
    Buick 11504595
    11504595
    BOLT, HEXAGON (M10X1.5X20) 10.9 PHOSPHATE ORGANIC
    $3.46 $2.20
    10
    Add To Cart
  • Buick 11507095
    11507095
    NUT, HEXAGON (M6X1X5.5) 9 PHOSPHATE ELECTRO ORGANIC
    $0.42 $0.34
    1
    Add To Cart
  • Buick 3835577
    3835577
    PLUG, CYL BLOCK OIL GALLERY
    $2.88 $1.83
    1
    Add To Cart
  • Buick 25524524
    25524524
    BOLT, HEX FLANGED HEAD (5/16X18X.75) 280M PHOSPHATE ORGANIC
Genuine GM Parts, the Right Choice
GMPartsGiant.com offers the wholesale prices for genuine 1991 Buick Lesabre 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 3.8L. Model Code: 2 DOOR, CUSTOM 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR.