Seller notes

Symptoms:Flare shiftsLong shiftsDelayed shifts Cause:Wear of the exhaust backfill casting bore, and lack of full OE valve bore engagement can allow clutch backfill pressure to exhaust, resulting in slower clutch apply. Correction:Sonnax exhaust backfill valve kit restores hydraulic integrity and has been redesigned with a longer spool for better engagement in both the inboard and outboard ports to better seal the backfill circuit. fits 2000-2015 Trucks equipped with Allison® 1000/2000/2400 tran...

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