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Access Buick  wiring diagrams and repair procedures. Learn how to repair, install or remove a part, reset engine lights...
 
Buick 151 Engine (L4, 151 cid, 2.5L)
Home Page | Engine Home Page | Buick
This Buick 151/2.5L engine/motor can fit the Century, Skylark, Somerset and some other Buick car and/or truck applications - for more details see your automobile manual.

1991 - 1992

1991-1992 Buick 151 FWD,  Roller cam,  Trigger fire ignition, Balance shaft, Block #750, Head #514, chain driven cam
Engine DescriptionSizeVINPrice/Core
1991-1992 Buick 151 FWD, Roller cam, Trigger fire ignition, Balance shaft, Block #750, Head #514, chain driven cam

151/2.5LR$1,731/$250
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1990

1990 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Block #980,  Head #485, 514,  Balance shaft, Gear Drive
Engine DescriptionSizeVINPrice/Core
1990 Buick 151 FWD, Roller cam, Trigger fire ignition, Block #980, Head #485, 514, Balance shaft, Gear Drive

151/2.5LR$1,562/$300
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1990-1991 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Balance shaft, Block #401,  Head #485,  514, chain driven cam,No oil pump supplied
Engine DescriptionSizeVINPrice/Core
1990-1991 Buick 151 FWD, Roller cam, Trigger fire ignition, Balance shaft, Block #401, Head #485, 514, chain driven cam,No oil pump supplied

151/2.5LU$1,731/$275
Go To

1989

1989 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Balance shaft, Block #980,  Head #642 No oil pump supplied
Engine DescriptionSizeVINPrice/Core
1989 Buick 151 FWD, Roller cam, Trigger fire ignition, Balance shaft, Block #980, Head #642 No oil pump supplied

151/2.5LR$1,562/$300
Go To
1989 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Block #725, Head #485, balance shaft Head #514
Engine DescriptionSizeVINPrice/Core
1989 Buick 151 FWD, Roller cam, Trigger fire ignition, Block #725, Head #485, balance shaft Head #514

151/2.5LU$1,731/$275
Go To

1988

1988 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Balance shaft, Block #980,  Head #808,  655
Engine DescriptionSizeVINPrice/Core
1988 Buick 151 FWD, Roller cam, Trigger fire ignition, Balance shaft, Block #980, Head #808, 655

151/2.5LR$1,562/$300
Go To

1987

1987 Buick 151 FWD,  Roller cam,  Trigger fire ignition
Engine DescriptionSizeVINPrice/Core
1987 Buick 151 FWD, Roller cam, Trigger fire ignition

151/2.5LR$1,461/$250
Go To
1987 Buick 151 FWD,  Roller cam,  Trigger fire ignition,  Balance shaft, Block #725,  Head #808,  655, No oil pump supplied
Engine DescriptionSizeVINPrice/Core
1987 Buick 151 FWD, Roller cam, Trigger fire ignition, Balance shaft, Block #725, Head #808, 655, No oil pump supplied

151/2.5LU$1,731/$275
Go To

1985 - 1986

1985 Buick 151 FWD,  Roller cam,Non Balance shaft, Smog in Manifold.
Engine DescriptionSizeVINPrice/Core
1985 Buick 151 FWD, Roller cam,Non Balance shaft, Smog in Manifold.

151/2.5LR$1,474/$250
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1985 Buick 151 FWD, roller cam, block #769, head #767. With balance shaft assembly.
Engine DescriptionSizeVINPrice/Core
1985 Buick 151 FWD, roller cam, block #769, head #767. With balance shaft assembly.

151/2.5LU$1,489/$275
Go To

1984

1984 Buick 151 FWD,  Also Fiero,  Smog in manifold,  Cross flow head, flat lifters.
Engine DescriptionSizeVINPrice/Core
1984 Buick 151 FWD, Also Fiero, Smog in manifold, Cross flow head, flat lifters.

151/2.5LR$1,420/$250
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1982 - 1983

1983 Buick 151 FWD,  4 hole smog,  Mechanical or electric FP,  Cross flow head,
Engine DescriptionSizeVINPrice/Core
1983 Buick 151 FWD, 4 hole smog, Mechanical or electric FP, Cross flow head,

151/2.5L5$1,255/$300
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1982 Buick 151 FWD,  4 hole smog,  Mechanical or electric FP,  Cross flow head,
Engine DescriptionSizeVINPrice/Core
1982 Buick 151 FWD, 4 hole smog, Mechanical or electric FP, Cross flow head,

151/2.5LR, 5$1,255/$300
Go To
1982 Buick 151 RWD,  No smog,  Mechanical or electric FP
Engine DescriptionSizeVINPrice/Core
1982 Buick 151 RWD, No smog, Mechanical or electric FP

151/2.5L5, B$1,255/$300
Go To

1980 - 1981

1980-1981 Buick 151 FWD,  4 hole smog,  Cross flow head
Engine DescriptionSizeVINPrice/Core
1980-1981 Buick 151 FWD, 4 hole smog, Cross flow head

151/2.5L5$1,255/$300
Go To

For troubleshooting tips and repair information on the Buick 151/2.5L engine, please visit our Information page.