Instant Rebates
Call Our Support Line
24 Hours / 7 Days a Week!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

Sonnax 28999-04

Manual Valve Powerglide

Sonnax 28999-04


jegs shipping
Estimated ship date 11/28/17 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Sonnax 28999-04 Manual Valve Powerglide $21.87
Manual Valve
  • Powerglide

  • Sonnax 28999-04 Details

    Manual Valve

    Sonnax manual valve 28999-04 is a direct OE replacement for damaged or missing Powerglide valves.

    • Wide-spool design is suitable for replacing both narrow and wide OE valves
    • Heat-treated for improved wear resistance
    • Precision-ground diameters for proper clearance


    Manufacturer's Part Number:

    The OE boost sleeve wears from repeated oscillation of the boost valve. This wear allows leakage, reduces line pressure and contributes to line pressure instability. Sonnax Boost Valve Kits replace worn components and incorporate a larger boost ratio, which increases line pressure and provides firmer shifts. Sonnax also offers replacement manual and regulator valves.

    Items You Need

    Before you leave us... Receive a free catalog or join our email list

    Sign up to receive our catalog or subscribe to our email list now to see our exclusive email only specials, new products, and offers!

    Request CatalogJoin Email List