SKU: M6316A521
|        PART NUMBER  |             ENGINE  |             BALANCE  |             NOTES  |             MASS (LBS)  |     
|        302 (1981-93)  |             50 oz.-in.  |             Meets SFI 18-1 1,2,3,5  |             12.1  |     |
|               302/351W         |             28.2 oz.-in.  |             Meets SFI 18-1 1,2,3,6  |             11.5  |     |
|        429/460  |             Neutral  |             Meets SFI 18-1  |             10.1  |     |
|        514/521  |             Neutral  |             Meets SFI 18-14  |             10.1  |     |
|        302/351W  |             Neutral  |             Meets SFI 18-13,6  |             10.6  |     
NOTES: 1 Damper has removable weight that allows use as a neutral balance unit for internally balanced crankshafts. 1994-01 Mustang and Explorer requires modification. 2 Does not clear early timing chain cover with rear installed seal. 3 3.000-inch. overall length 4 Tuned for use on 521 crate engine. 5 Passenger side 11-o'clock timing marks only. 6 Passenger side 11-o'clock timing marks and drivers side 2-o'clock timing marks