Page 162 of GM Performance Parts 2006 Catalog by GM Parts Direct

Chrome Valve Covers, Center Bolt Design A Polished Aluminum Valve Covers, Center Bolt Design B Aluminum Black Crinkle Valve Covers, Center Bolt Design C Chrome-Finish Aluminum Valve Covers, Center Bolt Design D Circle Track Valve Covers, Center Bolt Design E CHEVY SMALL-BLOCK V-8 160 NOTE: NOTE: NOTE: NOTE: A. 12355350 Chrome Valve Covers, Center Bolt Design Short-style chrome valve covers with baffle for use on 1986-and-newer engines with center hold-downs. Red Chevy Bowtie logo is embossed in on top. B. 12497978 Polished Aluminum Valve Covers, Center Bolt Design Die-cast aluminum valve covers are polished to a bright shine. They are approximately 1/4" taller than production covers. For use on 1986-and-newer engines with center hold-downs. Kit includes bolts, washers and seals. Use valve cover gasket P/N 10046089 and replacement bolt and seal kit P/N 12497980. C. 12497979 Aluminum Black Crinkle Valve Covers, Center Bolt Design Die-cast aluminum valve covers have black crinkle finish. They are approximately 1/4" taller than production covers. For use on 1986-and-newer engines with center hold-downs. Kit includes bolts, washers and seals. Use valve cover gasket P/N 10046089 and replacement bolt and seal kit P/N 12497980. D. 12497985 Chrome-Finish Aluminum Valve Covers, Center Bolt Design Die-cast aluminum valve covers have a chrome finish. They are approximately 1/4" taller than production covers. For use on 1986-and-newer engines with center hold-downs. Kit includes bolts, washers and seals. Use valve cover gasket P/N 10046089 and replacement bolt and seal kit P/N 12497980. E. 25534359 Circle Track Valve Covers, Center Bolt Design Sheet metal valve cover kit designed for Gen 1 design circle track engines equipped with center hold-down cylinder heads. Covers equipped with two breather pipes on one cover and no pipes on the other. Use breather kit P/N 25534355.

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