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450-43LE / AW450-43LE Solenoid Kit – Compatible for Chevrolet, GMC, Isuzu, Mitsubishi Fuso & Nissan UD 1998-2007
Restore crisp, reliable shifting to your diesel truck with this complete 4-solenoid repair kit.
This direct-replacement set includes the TCC lockup solenoid, SS1 shift solenoid, SS2 shift solenoid, and Timing solenoid for the Aisin 450-43LE (AW450-43LE) 4-speed automatic used in medium-duty trucks. These solenoids are a common failure point, causing limp mode, harsh/soft shifts, delayed engagement, no upshifts, or diagnostic codes. The kit fixes these issues without replacing the entire valve body or transmission.
Perfect fit for popular models including:
Chevrolet/GMC W3500/W4500/W5500 Tiltmaster/Forward (I4 diesel, 1998-2007)Isuzu NPR/NPR HD (I4 diesel, 1999-2007)Mitsubishi Fuso FE/FG series (I4 diesel, 1999-2007)Nissan UD 1200/1300/1400 (I4 diesel, 1999-2007)
Common symptoms this kit resolves:
Limp mode or no upshiftsHarsh or soft/erratic shiftingDelayed engagement or slippingP0750-P0770 series solenoid codes
Easy installation – drop the pan, swap solenoids, refill with approved ATF. Professional installation recommended for best results.
Add this proven 450-43LE solenoid kit to your cart today and get your diesel truck shifting strong and reliable again!
