SOUTH BEND 1944-6OK DYNA MAX ORGANIC CLUTCH KIT – 1999–2003.5 FORD 7.3L POWERSTROKE (ZF6)

Street/tow smoothness with real holding power. South Bend’s 1944-6OK Dyna Max is a single-disc ORGANIC clutch kit engineered for ZF6-equipped 7.3L Powerstroke trucks. It delivers predictable engagement and durability for daily driving and towing without the harsh, on/off feel of race clutches.

• Capacity: ~400 HP / ~800 ft-lbs (vehicle dependent)
• Use case: Street & towing with mild-to-moderate performance upgrades
• Flywheel: Single-mass flywheel included; will not work with OEM dual-mass flywheel
• Disc: 13" performance organic friction
• Pressure plate: HD clamp for higher torque capacity

FITMENT

• Truck: Ford F-250/F-350 (and select F-450) 7.3L Powerstroke
• Model years: 1999–2003.5
• Transmission: ZF S6-650 (ZF6) 6-speed manual
• Input: 1-3/8" (10-spline) input shaft (ZF6)

WHAT'S INCLUDED

• HD pressure plate
• 13" organic clutch disc
• Single-mass flywheel
• Pilot bushing/bearing, release bearing, alignment tool, and required hardware

CROSS-REFERENCE / ALTERNATIVES

• Need more capacity? Consider 1944-6OK-HD (~425 HP / ~900 ft-lbs) for heavier towing.
• ZF5 trucks (1994–1997): see 1944-5OK Dyna Max Organic (400 HP class).
• Clutch hydraulics: inspect/refresh if pedal feel or release travel is marginal.

INSTALL NOTES

• DMF delete: This kit replaces the factory dual-mass flywheel; do not reuse the OEM flywheel.
• Break-in is critical for longevity and smooth engagement; follow South Bend’s procedure.
• Verify transmission (ZF6) and input spline before ordering.

FAQ

No. The 1944-6OK includes a single-mass flywheel and is not compatible with the OEM dual-mass flywheel.

South Bend rates this kit around ~400 HP / ~800 ft-lbs in a properly maintained truck. For higher power or harder use, consider the 1944-6OK-HD.

Yes. The organic friction material and pressure plate tuning prioritize smooth, predictable take-off for street and towing.

It fits ZF6 6-speed 7.3L trucks from 1999–2003.5. ZF5 and other transmissions require different part numbers.