AISIN SEIKI AW450-43LE FORWARD CLUTCH DRUM (58 TOOTH PTO GEAR)
The Aisin Seiki AW450-43LE Forward Clutch Drum (58-tooth PTO gear, often identified with part number 141554E) generally fits 1998-2007 commercial trucks equipped with this 4-speed automatic transmission, including Izusu NPR/NPR HD, GMC W3500/Forward, Chevrolet W3500/Forward, Mitsubishi Fuso FE, and Nissan UD 1200/1400.
Key Vehicle Fitments (1998-2007):
- Isuzu NPR / NPR HD: 1999–2007 (I4 Diesel)
- GMC W3500 / Forward: 1999–2007
- Chevrolet W3500 / Forward: 1999–2007
- Mitsubishi Fuso FE: 1999–2004 (I4 Diesel)
- Nissan UD 1200 / 1400: 1999–2004
- Hino 145: 2005–2007
Component Details:
- Transmission: Aisin Warner/Seiki AW450-43LE (also known as 450-43LE).
- Features: 58-tooth PTO gear, 0.950″ diameter splines.
- Years: Commonly listed as 1998-Up (or 1998-2007 in rebuild kits).
- Notes: These transmissions are frequently found in medium-duty, diesel-powered cab-over trucks.












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