Aisin Seiki / Aisin Warner
Source-verified model
Aisin Seiki / Aisin Warner 450-43LE Transmission
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Vehicle fitment explorer
Confirmed vehicle applications. Every row is drawn from our source-verified fitment database.
6 applications · 3 makes · 1998–2015 Isuzu 4 · Mazda 1 · Mitsubishi 1
| Make | Model | Year | Drive | Engine |
|---|---|---|---|---|
| Isuzu | ELF | 2012-2014 | 4 Spd RWD | L4 4.6L |
| Isuzu | NPR / HD Tilt Cab | 1998-2005 | 3.9, 4.8, 5.2, 5.7, 6.0 | |
| Isuzu | NPR Truck | 1999-2005 | 4 Spd | L4 4.7L(Diesel) |
| Isuzu | TRUCK NPR | 1999-2005 | 4 Spd RWD | L4 4.75L/5.2L DIESEL |
| Mazda | TITAN | 2004-2015 | 4 Spd R/4WD | L4 3.1L |
| Mitsubishi | Fuso FE | 1998-2004 | 2.0, 3.9, 4.9 |
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Common problems & symptoms
Problems and symptoms reported for this transmission, compiled from repair sources. Not a complete list.
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No third or reverse gear
A documented failure pattern where the transmission loses both third gear and reverse, covered by a dedicated technical service bulletin for this unit.
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Cutback valve sleeve failure
A broken cutback valve sleeve in the valve body can cause engine stall on engagement, TCC apply concerns, low line pressure and low boost pressure.
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Boost valve and sleeve wear
Wear of the main boost valve and sleeve causes EPC fluid to leak to exhaust or cross-leak, producing delayed reverse engagement, flare shifts and clutch distress.
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Sources & Contribution
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