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Access Buick  wiring diagrams and repair procedures. Learn how to repair, install or remove a part, reset engine lights...
Buick 403 Engine (V8, 403 cid, 6.6L)
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This Buick 403/6.6L engine/motor can fit the Electra, Century, Riviera, Estate Wagon, Le Sabre and some other Buick car and/or truck applications - for more details see your automobile manual.

1977 - 1979

1977 Buick 403 Fits Most Applications, 4 hole Smog, AT
Engine DescriptionSizeVINPrice/Core
1977 Buick 403 Fits Most Applications, 4 hole Smog, AT

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For troubleshooting tips and repair information on the Buick 403/6.6L engine, please visit our Information page.