Use these crank pulley spacers with Ford Racing M-6316-C351/A50/D302 crank dampers to achieve proper belt alignment on past model 302 and 351 Windsor engines.

PART NUMBER	ENGINE		CRANK PULLEY BOLT PATTERN	SPACER THICKNESS
M-8510-A351	302/351W		4	0.350"
M-8510-B351	302/351W		4	0.950"
M-8510-C351	302/351W		4	0.875"
M-8510-D351	302/351W		4	0.909"

INSTALLATION NOTES Early 3-bolt crank pulleys generally bolt directly to the damper (damper is drilled for 3- and 4-bolt patterns). Sheave alignment should be checked and any misalignment. corrected with the proper thickness spacer.