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DRIVELINE MANUAL TRANSMISSION FLYWHEELS FOR MODULAR ENGINES PART NUMBER MATERIAL/ CLUTCH DAMPER RING CRANK UNBALANCED APPLICATION WEIGHT ASSEMBLY GEAR BOLTS COUNTER BORE M-6375-D46 Nodular Iron 6.320" 164-Tooth 6-bolts 0 oz.-in. 4.6L SOHC Mustang. Has increased rpm capability a140a141 21 lbs over stock cast iron flywheel M-6375-F46A Billet Steel 6.25" 164-Tooth 6-bolts 0 oz.-in. Fits 6-bolt 4.6L Mustang with 10.5" clutch and some a140a141a142 29 lbs 11" clutch applications. Does not fit 2005-2010 Mustang production clutch disc. Meets SFI 1.1 M-6375-G46A Billet Steel 6.25" 164-Tooth 8-bolts 0 oz.-in. Fits 8-bolt 4.6L Mustang with 10.5" clutch and some a140a141a142 29 lbs 11" clutch applications. Does not fit 2005-2010 Mustang production clutch disc. Meets SFI 1.1 M-6375-R00A Aluminum 6.200" 164-Tooth 8-bolts 0 oz.-in. Fits 8-bolt 4.6L Mustang with 10.5" clutch and some a140a141a142 12 lbs 11" clutch applications. Does not fit 2005-2010 Mustang production clutch disc. Reduced rotating mass. Meets SFI 1.1 M-6375-R00B Aluminum 6.200" 164-Tooth 6-bolts 0 oz.-in. Fits 6-bolt 4.6L Mustang with 10.5" clutch and some a140a141a142 12 lbs 11" clutch applications. Does not fit 2005-2010 Mustang production clutch disc. Reduced rotating mass. Meets SFI 1.1 NOTES: a140 Diaphragm clutch uses metric bolts and dowel pins. Requires metric Pressure Plate Bolts N602549-S51M and alignment Dowel Pins D1FZ-6397-B or Ford Racing Kit M-6397-A302. a141 4.6L engines may have 6 or 8 bolts to attach to the crankshaft. Check the engine code before ordering. Romeo-built engines have 6 bolts and Windsor- built engines have 8 bolts. All Cobra engines have 8 bolts. The 8th character in the VIN is (X) for Windsor engine plant or (W) for Romeo engine plant. a142Requires Bolt and Dowel Kit M-6397-A46 for 11" clutch applications. M-6375-R00B shown M-6375-R00A shown Did you know… 1968-1980 302 engines were built with a 28-ounce imbalance factor. 1981-2001 302 engines were built with a 50-ounce imbalance factor. 1969-1997 351W engines were built with a 28-ounce imbalance factor. 1970-1974 351C engines were built with a 28-ounce imbalance factor. NOTE: Severe engine damage will result if you use the wrong flywheel or damper on your engine. For important information about the proper usage of performance parts, please see page 14. See pages 286-292 for important safety, emissions and warranty information. www.fordracingparts.com 175


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