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Buick
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1981
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Regal Base, 4.4L Eng VIN J
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Catalytic Converters
Catalytic Converters
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Description & Operation
Notes
Three-Way Catalytic Converter
Heat Shields
Service
Maintenance
Shell Replacement (General Motors Only)
Catalyst Replacement (AMERICAN Motors And General Motors Only)