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Click to enlargepadShift Improver Packages

These packages offer firmer, quicker shifts for better performance and quicker ETs. Packages come complete with all necessary parts, spacer gaskets, pan gasket and simple instructions. For serious performance/racer applications. Non-lockup applications only.

*P4529087 Shift Improver Package (1962–70 A-727, 1971–73 A-904 6-cyl.)

*P4529088 Shift Improver Package (1971–73 A-727, 1971–73 A-904)


P4529087 or P4529088padRegular price: $62.00padSale price: $54.05padPart Number: 
Accessory questions or to place an order please call our toll free order line at 800-992-2454

Please direct all Mopar Performance technical questions to the Mopar Performance Hotline at 888-528-HEMI(4364) This is a direct phone call to the Mopar Performance Hotline and is not affiliated with Wyckoff Chrysler.

OUR PHONE SUPPORT IS OPEN 8:30AM TO 4:30PM EASTERN TIME

We now have a toll free number. Feel free to call with any questions. You may also place an order on the phone and receive the same discounts as on this site. Please have the part numbers of the items you would like handy. Please be advised that internet orders do process faster than phone orders.

1-800-992-2454



ATTENTION DAIMLER CHRYSLER EMPLOYEES: YOU CAN GET A 25% DISCOUNT OFF MSRP OR 15% OFF OUR "SALE" PRICE(WHICHEVER IS BETTER) ON MOPAR PARTS AND ACCESSORIES. CLICK THE LINK BELOW FOR DETAILS...

DaimlerChrysler, Mopar and 5-Star Dealer Employees CLICK HERE!

Photos are for illustration purposes only and may not depict specific application.

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