Allstar Performance Exhaust Block Off Plates - SB Chevy - Spread Port 931171 6 AN Male Return

6 AN Male Return

4 AN Nut to 6 AN Socket

1977-1981 Pontiac Laurentian

Multi-Layer Clear

the FIA has made some alterations:

Allstar Performance Exhaust Block Off Plates - SB Chevy - Spread Port 931171 6 AN Male ReturnAluminum block off plates seal exhaust ports during engine storage or repairs. Plates help protect against moisture, dust, and dirt. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available from Allstar