Universal Catalytic Converter 2.50 w/ dual O2 99066HM Magnaflow hard-and-soft-tops 6 V8 1971 - 1974

6 V8 1971 - 1974 Mercury Monterey 400/6

4L V8 1967 - 1969 Pontiac Bonneville   400/6

Brand Holley EFI Emission Code 3 Harness Application GM Harness Type Transmission Product Type Transmission Harness

This bolt-on emissions-legal system features 3

Universal Catalytic Converter 2.50 w/ dual O2 99066HM Magnaflow hard-and-soft-tops 6 V8 1971 - 1974Keep the check engine light off with MagnaFlow HM Grade Federal EPA Compliant Universal Catalytic Converter 99066HM. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low mass design also allows for greater thermal efficiency. This replacement