Featuring Weistec Billet Pistons & Rods! Maintains Factory 11.3:1 Compression
Featuring Weistec Billet Pistons & Rods! Maintains Factory 11.3:1 Compression
This cylinder head bolt service kit is for M156 6.3L "63 AMG" engines with plastic valve covers only. Includes Cylinder Head Gaskets.
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For Cars With Plastic Valve Covers Only
This product was last offered at the strikethrough price on
06-26-2026
Complete Set of 20 Main Bolts, Must be replaced each time the cylinder head is removed
Complete Set of 20 Main Bolts, Must be replaced each time the cylinder head is removed
Designed for High RPM and Racing, Direct Replacement for M156 and standard M159 Valve Buckets
Fully assembled, and Ready to run heads!